The Maths Behind Early Retirement

This week we talked about the Trinity study – where the 4% rule came from. Looked at the maths behind the 4% rule and why it works.

We introduced a new term “sequence of returns risk” and explained how to protect yourself against it. This included a lot of talk about bonds.

We also talked about doing things future you will be grateful for. You can’t know the whole path before you start. Get going now and start doing things every single day that future you will thank you for.

Week 9: How Much Do I Need to Retire?

How can we know enough is enough?

Katie and I retired 33 years before the normal retirement age.

How could we be confident that we wouldn’t run out of money and it would work perfectly for that length of time? How can you even be confident at normal retirement age that you won’t run out of money, that things won’t go badly, that the stock market won’t crash?

You cannot know with 100% certainty, that doesn’t exist, but if we understand the maths, we can have confidence that things will work out well. The maths will give you confidence that enough is enough and you can actually put your feet up and do whatever you want to do afterwards.

This stuff is quite complex so take your time, rewatch as many times as you need, take it in stages, watch us super slow and sounding funny. Whatever you need to help you process this information. Working on your finances is a journey that can take some time to go through!

Overwhelmed? Not ready?

Some people have said they’re struggling, overwhelmed, don’t have a positive gap, or falling behind. If you don’t have a positive gap then there is a few things we can do to turn this around.

The first step is to add our favourite 3 letter word to the end! “I don’t have a gap yet!” Add “YET” to your “I can’t” and “I don’t” statements and rephrase them to “how could I …”.

I don’t have a gap yet! How could I create a gap?

Start where you are

Breathe, pause and start where you are.

Don’t carry on regardless. Stop watching the investing weeks. Work on your mindset. Go back and re-watch the relevant weeks where you need to progress and take action. There is no problem with going back over the weeks. Build your foundations first and then progress from there.

If you need to work on your:

Gap

Re-watch week 1 and/or Create a Side Hustle, Salary Trap and Live Large workshops.

Mindset

Re-watch week 3 & week 5 and/or the Extraordinary future workshop.

Pensions

Empowering you

People on the course are from a whole range of ages, from less than 21 to 80 and over. All very different situations, needs and desires. We cannot cover all scenarios, but we can give you the tools you need to work it out for yourselves. We want to empower everyone (including you!) to be able to make choices and take action with their own financial futures. Our aim is that you take the information we give you and apply it to your situation.

Remember, anything is possible – the extraordinary belongs to those who create it….

On to the 4% rule! How you know enough is enough

4% Rule

The 4% rule came from a guy called William P. Bengen in 1994. He was reading a retirement study called the Trinity study from two professors and he noticed that if you withdraw 4% of your portfolio a year you have a 96% success rate! He thought 96% was pretty good and decided to come up with what we now know as the 4% rule.

The Trinity study looked at a 30 year retirement period, different withdrawal rates and whether you will run out of money before you die!

  • Retirement period: this just means the length of time from when you retire (stop earning) to when you die. They assumed this would be 30 years on average
  • Withdrawal rates: this means how much you take (withdraw) from your retirement pot each year.

The reason for doing all this work was so that you could trust that your money won’t run out in retirement! All this is explained in The maths behind retirement. People wanted to know with certainty that if they retired with XXX invested then they would still have enough to live even at 90+ years old.

Looking at all the different scenarios, William Bengen, a retirement advisor saw that you have a 96% chance of not running out of money with a 4% withdrawal rate. That was what he then started advising his clients to spend from their portfolio each year.

It seemed to work really well and not only did people not run out of money in most instances but they were wildly successful having more money to spend later in life. Since that point William has been on record saying that this could quite easily be a 5% withdrawal rate and with some flexibility you probably won’t run out of money.

Katie and I retired with £1,000,000 invested. At a 4% withdrawal rate than meant we could live off £40,000 a year inflation adjusted for the rest of our lives.

What does inflation-adjusted mean?

The Trinity study was all about inflation-adjusted spending. But what the heck does that mean? Well, let’s talk about pizza to help understand this! You know Alan loves Pizza.

Every year pizza gets more expensive? Have you noticed that when you were younger you could go to Pizza Hut for £5 eat all you can Pizza? Not any more!

The price of pizza, and everything, goes up every single year. Knowing that you will need more money in 20 years’ time to buy the same number of pizzas as they will cost more.

If you aren’t invested, this feels painful. Inflation makes it feel like things are getting way more expensive.

If your money isn’t invested then it isn’t growing as fast as the price of things you buy. The same money today buys far less pizza than 10 years ago.

The 4% rule is based on your retirement expenses at the time of retirement and then inflation-adjusted for each year of retirement. This means you can buy the same amount of pizzas/groceries/stuff every year.

So, if you’re invested, the price still goes up, but your money grows alongside or even faster than the prices are going up and you can live off 4% of your pot forever inflation-adjusted.

Your Content Goes Here

In the green slide to the right you will see that if you retire on £40k a year in year 1. Then by year 2 you will need £41k to buy the same amount of stuff, inflation and everything getting more expensive. By year 5 you need £45k to buy the same amount of stuff. By year 15 you need £59k a year to buy the same amount of stuff.

If you don’t want to be significantly poorer because of inflation as you age you need your money invested. This is why having inflation adjusted spending is so critical and an important part of the 4% rule.

You will always have the same buying power. You will always be able to buy the same amount of pizza forever. Which is great because we LOVE pizza!

Summary

In retirement you can withdraw 4% of your portfolio each year, increasing for inflation and you have a 96% chance of not running out of money! yay

Bonds

We talked a lot about bonds. What they are, what they are not and why we’re even talking about them.

What they are

You can lend the government or a company money and they guarantee a return on your lending as an agreed percentage of interest over a certain period of time. You can then cash in the bond at the end of the term and get your money back. The difference between bonds versus stocks and shares is that with a bond you do not own the company, you just lend it money, with stocks and shares you own a small part of the company.

This is a hypothetical image of you lending money to a company and them giving you a bond (yes they used to be pieces of paper!) in return saying what they will repay you over time.

What they are not

1. A secret agent, but we are all trying to save the world, one way or another….

2. Premium Bonds (UK) – these are also you lending the government money but you don’t have any guarantee of getting anything back apart from what you have lent them in the first place. Instead, you go into a monthly draw for a number of cash prizes (tax free) which you can take as cash or automatically buy more premium bonds. You can cash in some or all of your premium bonds at any time and get your money back. We have some of our emergency fund in premium bonds.

 

 

3. Part Owner ship in a company – with bonds you do not own anything, you lend money. With stocks and shares you own a small part of the company, our strategy of global broad based index fund investing means you own a little of a lot of companies for diversification

The impact of bonds

In our opinion when you are earning you do not need bonds. Using bonds is related to retirement and approaching retirement.

As you add more bonds to your portfolio the overall growth growth on your portfolio lowers (bonds roughly only just keep up with inflation).

Katie created an incredible chart to show the impact of bonds on your pot. The chart maps what would happen if you invested 10 grand in different stock/bond ratios based on real market data for the last 15 years.

Bonds balance volatility and are one way of reducing sequence of returns risk. As you approach retirement you have less time to recover from a market downturn. Bonds protect you from having to sell off shares in a down market.

You do not need bonds at all if you are in your earning years. This is purely as you approach retirement and in retirement. Bonds are one way of reducing sequence of returns risk.

Sequence of Returns Risk (SoRR)

SoRR is the risk that the order of returns, market increases/decreases, that you get goes against you in the early years of retirement and then you run out of money before you die. This is not ideal as you don’t want to be having to go back to work at 85 as you have run out of money!

If you retire as the market crashes and you’re forced to sell when the market crashes you are more likely to run out of money in the future. This is only for big crashes.

Aside: BE AWARE that the media is full of scaremongering. Big crashes are uncommon, but do happen. Small crashes are incredibly common. Good news is not a seller, so the media do everything they can to scare you with “bad news” and even small crashes are hyped as a crisis. There’s never news about the market going up, that the market has done well. It doesn’t sell, it’s boring! So don’t buy in to the hype, ignore it and just chill, let your index funds do what they do and maybe buy some shares at a cheaper price

The best way to bring this risk to life is to think about if you had tried to retire just before the financial crisis in 2008. Imagine you had just retired in late 2007. You were super proud and looking forward to spending time with the grand kids. You retired with a £1M portfolio.

By March 2009 your portfolio has halved to £500,000. How would you be feeling? I would be pretty scared too! If you sell your shares at this point you are selling double the number of shares you had at the peak to get the same amount of money to live on.

This is sequence of return risk. Your shares would run out a lot quicker if this happened to you. And it did happen to people in 2008.

There is always another big crash coming, just no one knows when or how long it will last. This is what the whole course has been preparing you for!

How do we avoid SoRR?

SoRR is a very small risk, but it can have a huge impact, so it’s important to understand it and be prepared. Bonds are one way of avoiding it, but there are other ways.

Bonds are a double edged sword. The more bonds you have, you decrease volatility and in turn decrease your SoRR.

More bonds also decrease growth which increases the risk that you will run out of money in the long run.

The chart to right with the arrows shows the interplay of risks as you increase bonds.

Ways to protect yourself

Is it really so bad to just stay 100% in stocks and call it a day?

No, but there is a risk. To avoid SoRR you could flex spending, delay retirement, phase retirement, have a cash cushion, use bonds or a combination of those.

Bonds are just one way or protecting yourself from SoRR.

You get to chose how you deal with SoRR. Just have a plan and be prepared to implement it if you are unfortunate enough to retire into a global financial crisis!

Here are some of the other ways you can protect yourself against SoRR:

  1. Flexible Spending: if the market goes south then you tighten your belt. Practically what does this mean. If you are used to spending £40k a year but it is a bad year in the market then you reduce your spending. Cancel Netflix, reduce holidays etc. and spend less until the market recovers. Katie and I always marvel at how little it can cost to live in Thailand or Argentina. If the market crashes and we need to we will just move there for a year and spend less till the market covers. Flexibility of spending is an incredibly powerful leaver you can use to protect yourself against SoRR
  2. Delayed Retirement: in the 2008 example if you were about to retire in 2008 and you saw the market collapse then you could delay retirement for a year, live off your salary and wait for the market to recover. Not ideal if you hate your job but it will protect you against SoRR. If you see the market crash by 50% don’t just retire into it and spend willy nilly. That is how it all goes wrong.
  3. Phased Retirement: You could slowly reduce your days at work over time. Let’s say you reduced your days working from 5 to 3 to start with. Then down to 2 days a week and so on. This means you have some income in the first 3-5 years of retirement and if the market crashes you aren’t forced to sell shares when the market is down. This protects you from SoRR and if you love your job you might actually enjoy a couple of days a week to keep your hand in the game!
  4. Cash Cushion: This is where you build up a stock pile of cash that you have at hand for the first few years of retirement. You spend this cash instead of selling stocks and shares and if the market does crash you are protected as you have cash to fall back on. The problem with this strategy is that cash is a devaluing asset. Every year your cash cushion buys you less as inflation erodes it.
  5. Bonds: In the years running up to retirement you switch from buying stocks and shares and you buy bonds instead. You work to get to a balance of 5% cash, 20% bonds and 75% shares. Then if the market crashes in the early years you sell off the bonds and live off those and leave the stocks and shares to recover!

All of these strategies are designed to stop you from having to sell of shares in the early years if the market crashes. SoRR is only really a risk in the first 5 years of retirement. Any one of these strategies can keep you safe in the occasion of a BIG market crash like 2008.

We are NOT talking about a 10% crash. The 4% rule has a safety margin build into it that protects you from all but the biggest of crashes. With these strategies you can increase your chances of not running out of money to as close to 100% as humanly possible.

How to buy bonds

You buy bonds just like you buy index funds. There are many different options to choose from. We think the same approach for index funds works well for bonds too, i.e. global, broad based, funds.

Like index funds there are income and accumulation funds. Bonds pay out interest rather than dividends, either as cash in the income funds, or reinvest in the accumulation funds.

The account structure is the same as for index funds. If you’re not sure about this, or need a reminder go back to week 8. The important things for index funds are the same for bonds. Choose tax efficient accounts first.

How many bonds should I buy?

One of our favourite finance books ever is the Simple Path to Wealth by JL Collins. The strategy he recommends for retirement is to switch from 100% shares when you are working to a split of 5% cash, 20% bonds and 75% shares in retirement.

This then allows you to do what is called rebalancing each year and also protects you from SoRR. Just to be clear Katie and I never switched to bonds as we still had some income from my business that made us feel safe to remain 100% in stocks and shares. Adding bonds to your portfolio is one way of mitigating SoRR and allows you to rebalance each year.

Rebalancing

The split will change over time. Wait, what?!?! Why?

Because of growth – as stocks grow, or as your bonds grow your split will change, the difference in growth (or fall) will mean your stocks and bonds are at a different percentages of the overall value of your portfolio. You then need to rebalance to get back to your chosen split.

Rebalancing is something you do once a year, it’s not a constant rebalancing. Pick a date, maybe your birthday or a random day in June and designate that as your rebalancing day

The slides below should jog your memory from the course. The basic principle behind rebalancing is that it forces you to sell something when it is highly valued and buy the other asset class when it is lower.

The examples. Imagine you retired a year ago with a £1M portfolio and you had the classic split of 80/20. So you would have had £800,000 in shares and £200,000 in bonds.

Over the year stocks have grown a lot but bonds not so much! Now you have £1,126,000 in shares and £206,000 in bonds. This means you have 82% in shares “too much” and 18% in bonds “too little”.

How do we fix this. We sell off some of the shares and put it into bonds restoring our balance of 80/20.

If you introduce bonds to your portfolio then rebalancing is a fabulous strategy that forces you to sell off the asset that has grown the most and switch to the one that hasn’t.

If the opposite had happened and stocks and shares had crashed you would sell off some of your bonds and rebalance into stocks and shares. This means you would be buying stocks and shares when they are down and selling bonds when they are up.

Just have a clear and simple rule that you do it on x day each year and use it as a tool to protect yourself from SoRR.

Success

Success in retirement terms is defined by you not running out of money and having enough to live on. The standard 4% rule gives you a 96% chance of not running out of money in retirement which we think isn’t bad at all!

Some people want to have as close to 100% chance is success as possible and there are ways you can increase your chances! Katie and I have absolutely considered this as we retired at 35 and 40 and have a lot of years to get through! We don’t want to be getting towards 80 and having to top up.

The overriding principle is that: Flexibility is a key to success.

The professors that wrote the first Trinity Study had to make some assumptions to run their models. The assumptions they made where that when people retired then NEVER earnt another penny, that people ploughed on spending their 4% inflation adjusted no matter what and that they never once adjusted along the way if conditions change.

If you use some of the following tools to increase your chances of success I am 100% confident the 4% rule works!

Success factors

These are the different leavers you can pull to increase your chances of success in retirement:

  1. Flexible spending: if the market goes down then flex your spending and don’t just willy nilly spend into oblivion. This also means that if you are past SoRR (5 years or so) then you can increase your spending if your portfolio does really well!
  2. Flexible earning: could you earn ten grand in the year that the market was down? Could you work in a coffee shop, build something, create something or get a contract for a few months? If you do this then you can reduce the amount you have to withdraw in the down years. If you are not adverse to doing a little bit of fun work for pocket money then this leaver can drastically improve your chances of success. Some of you will never want to work again and that is ok, just use the other leavers!
  3. Flexible withdrawal rate: this is where you flex how much you withdraw from you portfolio. In the down years you take a little less and then with time and compounding you might be able to take a little bit more! Just be cognisant of major crashes and flex a little bit when they happen
  4. Cash Cushion: have some cash to ride out any down markets
  5. Bonds: you can increase bonds as you close in on retirement and then reduce them again as you pass the SoRR period of 5 years.
  6. Increase the % of stocks and shares: Interestingly the higher the percentage of stocks and shares you have in your portfolio, your growth engine, the higher chances of success you have. Katie and I have focused more on this strategy to protect us through that first period knowing we can fall back on flexible spending, flexible earning or other tools if we need to. Want to know why this is, scroll back up to the chart that shows the possible returns with different splits between stocks and shares and bonds. The more stocks and shares you have the higher your returns will be over time reducing the chance of running out of money

These are all tools or leavers you can pull if you need to. They are a back up plan. Katie and I have not had to pull any of these leavers in our first 5 years of retirement. In fact it has been the opposite as our portfolio has double from £1M to £2M and we are working to increase spending.

What does average success look like?

This next section is going to blow your mind. I couldn’t believe it when I worked out the numbers and maths!

Compounding continuously confuses the human brain. At the beginning you are confused as it doesn’t feel like compounding is doing anything and at the end you are even more confused as you wonder how did this work so well!

Imagine you retire with a 1M portfolio. You are going to be retired for 30 years in total. You will increase your spending each year in line with inflation (inflation adjusted) which is used 3% to model.

How much will you spend over that 30 year period?

The answer is you would have spend 1,902,800 in total! Nearly 2M. you would have retired with 1M and spend nearly 2M in retirement. So how much would you have left at the end of that 30 year retirement period?

Traditional maths would say I retired with 1M and spend 2M so there for I would have -1M and be in debt?

This doesn’t take into account compounding and growth.

The average person would have £10,075,000 even after spending all that money! isn’t that crazy?

The chances are that you will end up SUPER wealthy over the long run if you keep your money invested because of the power of compounding.

Just let that sink in for a minute. Your chances of running out of money are very small but your chances of ending up with a huge amount of money are very high.

We spend so much time preparing for the tiny possibility that we will run out money we forget to think about the far greater risk that they will end up with a huge amount of money that we have to work out what to do with.

Compounding

Worried you can’t save the figure you need to retire? You don’t have to do the work. That’s what compounding does for you.

The human brain can’t compute exponential numbers! Compounding is hard to fathom. Watch this video to help you get your head around how compounding does the work for you.

This is the first part of week 4 which explains compounding in more depth.

🎉 Future-Proofing – Week 9 Quiz

1. What is the 4% rule based on?

2. What does "sequence of returns risk" refer to?

3. Which of the following can reduce Sequence of Returns Risk (SoRR)? (Select all that apply)

4. What does rebalancing help you do?

5. Which of these is a success lever in retirement? (Select all that apply)

6. What is a common outcome of sticking to the 4% rule?

🧠 Bonus Q7: What's one reason you might choose a withdrawal rate lower than 4%?

🧠 Bonus Q8: What’s one way to simulate the impact of Sequence of Returns Risk?

🏆 Certificate of Achievement

You’ve mastered Week 9: Future-Proof Your Finances!

Flexible Finker

You trust the maths. And the pizza. 🍕📈

Week 9 homework

This week there are a few things to do on the homework front which will help you get closer to having your finances in order and to keep tracking your progress!

As Katie has been telling me for years homework is FUN FUN FUN! Or it can be. Find a buddy to do this stuff with, make a nice cup of tea, maybe have a hobnob (international friends who have no clue what this means click here!) and let’s enjoy working on your financial future.

 

  1. Read How much does it take to retire
  2. Consider your asset allocation. Are you working? If so check you are in stocks and shares! Are you close to retirement? Consider if you want to introduce bonds. Are you in retirement? Have you checked what investments you have an optimised them?
  3. Focus on the basics. The fundamentals of personal finance and simple (not easy). Focus on keeping your spending down, increasing your earnings and creating a giant gap. Then take this gap and get it working for you. Please check to make sure you are nailing the fundamentals
  4. Schedule in your monthly finance meeting. if you aren’t doing your monthly finance meeting then get it scheduled, make it fun and start working on a bright future for yourself!

Community

Community is so important. Surround yourself with people that are working towards a similar goal to you and you’ll be amazed what you can learn from each other. For those of you in the UK I wrote this article for you about the FIRE movement in the UK. There are good people out there who want to support you and help you! And obviously there are the amazing people in the Rebel Finance School Group as well! If the people closest to you aren’t supporting you as much as you would like on this journey then find people who will.

The Donegans are cheering you on!

Week 10 of Rebel Finance School

We have a last section of content for you, including Katie’s amazing retirement calculator and starting to think about what you want life in retirement to look like. We’ll also have a celebration and culmination of all that we’ve been talking about for the last 9 weeks. Can you believe it’s been 9 weeks?! One more week y’all! Looking forward to it already!

Plus we have a HUGE HUGE HUGE special guest star coming next week to chat to you all and hang out. One of my favourite people in the world!

Ask for help

If you have emailed us and we haven’t replied, we’re not ignoring you! We have been inundated with emails asking for help. Sorry. We are working as hard as we can but there is only so much of us to go round!​

If you have sent in a question to us using the question form, please check the Q&A Thursday sessions. We have tried to answer all the questions that have been sent in. If your question hasn’t been answered, or you have further questions please get in touch.

Remember, the best place to get a response is to reach out in the Facebook group with any questions you have or if you get stuck. Don’t let confusion be an excuse for not progressing with this stuff. We are here to support you!

The Sacred Order of the Rebel Pineapple

At the end of week 9 we did a ceremony to thank the incredible Rebel Ninjas who have helped us to run the course throughout the last 9 weeks and into the final week next week. They have tirelessly answered questions, helped us migrate the website, write articles, build tools, Q&A prep, managed Zoom and YouTube comments. They are our Knights, Lords and Ladies of the Sacred Order of the Rebel Pineapple.

They are amazing. If you get a chance send them a thank you note, find them on the Facebook group and give them a thank you note. This course would not have been what it is without them! THANK YOU

Illustration of the Sacred Order of the Rebel Pineapple, symbolising the Rebel Donegans community’s unique approach to financial independence

Closing message

Every week this year Katie and I have developed a closing message to inspire you. We love hearing what you think of them. The closing message this week was:

Trust the maths.

 

It is so difficult for our brains to comprehend compounding and how things till turn out over time. Run the numbers, check with the retirement calculators and trust the maths. We have to make the best decisions we can and charge into the future positively.

Thanks for enjoying the week 9 notes. Leave us a comment below and make our day!

Love, Peace and Pineapples

Katie and Alan

Frequently Asked Questions

How do I calculate my freedom rate?2025-08-20T06:28:54+01:00

Your freedom rate is the percentage of your income that goes into investments (your “freedom fund”). Take your annual investments and divide by your annual income. Example: Investing £6,000/year on a £30,000 salary? That’s a 20% freedom rate. This money buys your future freedom, unlike savings which get spent.
Tip: Track it monthly in your gap spreadsheet.
👉 Week 1’s tracking habit pays off here!

Why 25x my spending for retirement?2025-08-20T06:27:29+01:00

The 25× rule comes from the 4% “safe withdrawal rate” (SWR). If you feel you need £40k/year, £1M invested (25 × £40k) lets you withdraw 4% (£40k) annually, adjusted for inflation. It’s the shockingly simple maths that works globally. If you need £30k/year, multiply by 25 to get a £750k target. The 25x rule simply flips the 4% withdrawal rate. This assumes your investments grow enough to cover inflation and spending forever.
Tip: Subtract guaranteed income (state pension, defined benefits pensions and so on) first!
👉 Week 10 dives deeper into the 4% rule and we had a special session on Thursday of Week 9 with Bill Bengen of 4% Rule fame!

What counts toward my ‘current investments’ in the calculator?2025-08-20T06:26:02+01:00

Only low-fee stock market investments (ISAs, SIPPs, 401ks, KiwiSaver). Exclude cash, property, or DB pensions as those will go in the retirement income section. 
Tip: DB pensions? Pop them in the calculator’s “income” section.
👉 Use Week 2’s net worth tracking to find this number.

My calculator says I’ll retire at 150 – what gives?2025-08-20T06:24:33+01:00

The calculator assumes you never improve your situation—but you can! Boost your freedom rate, reduce spending, or add side hustle income. Retirement isn’t binary and part-time work bridges gaps.
Tip: Play with the numbers—even small changes shave years off.
👉 Week 3’s mindset work helps here.

How does the state pension affect my target?2025-08-20T06:23:45+01:00

Subtract your projected state pension (e.g., £10k/year) from your annual spending before multiplying by 25.
Example: Need £30k/year but get £10k from the state? Target = 25 x (£30k – £10k) = £500k. 
Tip: Find your UK state pension forecast here.
👉 Bill Bengen’s session (Week 9 bonus) looks at safety margins.

Why does a higher withdrawal rate mean earlier retirement?2025-08-20T06:22:40+01:00

Just as the 4% rule will give you a 25x multiplier, a 5% withdrawal rate will give you a smaller target (20x spending vs. 25x), but higher risk of running out of money. The calculator trades safety for speed.
Tip: Stick to 4% unless you’re flexible with spending or you love taking risks.
👉 Week 10’s session will look at sequence-of-returns.

What if my spending changes in retirement?2025-08-20T06:21:33+01:00

The calculator uses today’s spending, but adjust if you’ll downsize, travel, or have paid-off debts. Example: Mortgage-free? Subtract those costs first.
Tip: Revisit this annually — life changes!
👉 Week 1’s spending tracker helps guesstimate.

How does the calculator handle inflation?2025-08-20T06:20:01+01:00

The calculator uses real growth (after inflation). This means all numbers stay in today’s pounds/dollars.
Default settings: 10% growth – 2.4% inflation – 0.15% fees = 7.45% real growth. 
Tip:  If you’re conservative, nudge the inflation number up slightly.
👉 Week 7’s volatility chat explains why averages work.

What’s the ‘bridge’ to my state pension age?2025-08-20T06:19:08+01:00

Money to cover the gap between when you retire and when pensions kick in. Example: Retire at 55 with state pension at 68? You’ll need 13 years of spending in accessible accounts (like ISAs). ISA/SIPP withdrawals often bridge this gap.
Tip: The calculator can’t model this so join our Forecasting Bonus Workshop!
👉 August 18th bonus session teaches you how to build this bridge.

Why focus on freedom rate vs. savings rate?2025-08-20T06:17:49+01:00

Savings get spent (on cars/holidays, etc.). Freedom money gets invested to buy your time back. Your freedom rate directly determines how soon you can retire – it’s your most powerful lever.
Tip: Shift cash savings to investments when goals allow.
👉 Week 4 shows how compounding turns small changes into big freedom.

Is the 4% rule too conservative?2025-08-20T06:15:17+01:00

Bill certainly believes so and stated that the original 4% rule was based on the worst-case historical scenario (1968 retiree). His new research shows most people can safely withdraw 4.7-5.5% today, especially if they adjust for inflation and market conditions.
Tip: Use the higher end if you’re flexible with spending.
👉 Week 10’s session covers how to flex your withdrawals safely.

What’s the Shiller CAPE ratio, and why does it matter for my withdrawals?2025-08-20T08:12:06+01:00

Check the Shiller CAPE (Cyclically Adjusted Price-to-Earnings) ratio (Google it!) and current inflation. This CAPE ratio is like a “long-term thermometer” for stock market temperatures, comparing stock prices to company earnings over 10 years (instead of just 1 year) to smooth out short-term volatility. Higher CAPE (e.g., ~30+ today) = stocks are overpriced and you take slightly lower withdrawals (e.g., 5%), lower CAPE (e.g., ~15 in crashes) = stocks are on sale higher withdrawals are possible (e.g., 5.5%). Don’t obsess because this matters most at retirement. Bill’s book has tables to guide this.
Tip: Google “Shiller CAPE” and if the number is way above 17, you may want to tone withdrawals down a bit.
👉 Bonus: Week 10’s session will give you a simple formula to combine these checks without overthinking and the Forecasting workshop (Aug 18) will look at dynamic planning.

How do CAPE and inflation work together for withdrawal rates?2025-08-20T08:13:08+01:00

Think of these two factors as your retirement “weather forecast”:
CAPE = Stock market temperature (high=expensive, low=cheap)
Inflation = Cost-of-living pressure (high=ouch, low=smooth sailing)
When to adjust:
✔️ Both high? (CAPE 30+ AND inflation 5%+) → Tighten belt (try 4.5%)
✔️ One high? → Small tweak (e.g., 5% instead of 5.5%)
✔️ Both low? → Carry on, rebel!
Remember that this isn’t about perfection. It’s about avoiding big mistakes when markets get wild.
Pro tip: Check CAPE first (takes 10 secs to Google), then glance at inflation news. Bill calls this the “1-minute retirement checkup!”
👉 Week 10’s session will give you a cheat sheet for this.

What’s the biggest risk to my retirement plan?2025-08-20T06:12:11+01:00

Inflation and bear markets early in retirement. If both hit at once, your best play is to reduce your spending. Stocks usually recover, but inflation erodes purchasing power long-term. Bill thinks inflation is the biggest enemy of investments and Financial Freedom.
Tip: Track personal inflation (e.g., food/travel/living costs rising).
👉 Week 7’s volatility training helps stomach market dips.

Can I spend more early in retirement?2025-08-20T06:11:07+01:00

Bill’s research supports “front-loading” spending (e.g., travel) and cutting back later if needed. Just avoid overspending during market highs.
Tip: Build a “fun fund” for early retirement splurges.
👉 John Bustin’s drawdown session (Week 11) covers tax tricks.

Should I worry about index funds becoming too popular?2025-08-20T06:10:05+01:00

No. Bill says low-cost index funds are still the best option for most. Active traders will always keep markets efficient.
Tip: Ignore the noise—keep investing globally.
👉 Week 6’s “Investing 101” explains why simplicity wins.

How do I avoid dying with too much money?2025-08-20T06:09:03+01:00

Bill recommends giving gifts early (like he does with his kids) and revisiting your withdrawal plan if your portfolio grows faster than expected.
Tip: The Rebel mindset tells us that Money is for living, not hoarding!
👉 Bill’s book “A Richer Retirement” has more on joyful spending.

11 Comments

  1. TimeRichFi July 29, 2025 at 8:41 pm - Reply

    Thank you Alan, Katie & the rebel ninjas for all your hard work. I have learnt a lot. Love your fresh approach, all the charts and resources you have put together. 5am wake ups in Australia to be inspired by you and the rebel community on Tuesday and Friday have been fun over the last 9 weeks. Muchisimas y mil gracias 🍍

    • Alan Donegan July 31, 2025 at 1:22 am - Reply

      5am! WOW. That is so early. Did we spot you on Zoom or YouTube? THANK YOU for writing. We are planning on coming back to Australia next year and going to the TribeFI event and maybe coming to WA for the first time. it is going to be so much fun! THANK YOU

      • CLAIRE August 3, 2025 at 12:00 pm - Reply

        I thought that 6.30am in NZ was saintly but I take my pineapple hat off to our Australian cousin, Timerich. I’ll be sad to see the course end but there is many parts to revisit. Week by week I’m blown away by the amount of info you all provide us. I wish you and the ninjas some nice down time before you next adventure. My retirement, 65 rolls around next August so I’ll be busy getting ready for the next stage with a lot more confidence thanks to you all. A million thanks Sláinte💚💚💚

        • Alan Donegan August 10, 2025 at 6:42 pm - Reply

          Claire (Week 9)
          Claire, you legend! 6:30am in NZ is saintly indeed 😇 Thank you for being part of the journey. Wishing you a joyful transition into retirement next August—you’ve earned it! We are planning on coming to NZ next year so maybe see you there??

          A&K
          Peace and Pineapples 🍍✌️

  2. Beth Carlisle December 17, 2025 at 4:12 pm - Reply

    Thank you for these lessons. I have love, love, loved ‘ going back to school!’ I am a teacher, turned tutor so it’s been fun being on the other side of the lessons. In fact, my husband says I am a total nerd as I do all the extras and join in with everything!
    Not sure why I am ‘ optimistic cherry ‘ but we are where we are!
    I have,to date moved my sipp, moved my husbands x 3 and am now on the Isla cash to ss part of my action plan. We have some DBs too so should be able to go ‘ bond- less!’ Which I thinks feels freeing – akin to going braless! Apologies, Alan and Katie, I found that quite amusing!
    Thanks for all you do – have spread the word to humans young and old.
    Happy Xmas xx

    • Alan Donegan December 20, 2025 at 12:04 am - Reply

      Beth, you made my day. Katie and I are total nerds too and do all the home work and have fun on all the courses we go on! Welcome!

      Optimistic Cherry is a brilliant NickName! I love it.

      That made me laugh out loud! Genius way of putting it. The DB pensions can absolutely be treated as bonds freeing you with some of your other investments. I love this.

      It is our pleasure and I am so glad you messaged and wrote. Hope we get to meet you next time we are back in the UK! Sending happiness. Alan

  3. HKS January 23, 2026 at 7:42 am - Reply

    Katie, Alan, Team Pineapple, I can’t begin to imagine all the work that has gone into producing this wonderful course. Thank you for sharing your knowledge and experience and for doing so with so much openness, care, gentleness and humour. And there was me thinking I would have to (make my husband) work forever. A quick question if I may – in the top right hand corner of this page, the Week 9 Q&A video isn’t there – am I right in thinking that it is your sit-down with William Bengen (which I have found on YouTube)? I don’t want to miss a thing, and if I could give anyone any advice, it would be to work through the course in order and not skip ahead. You’ve been so generous to put all this out to the world and we appreciate you!

  4. Rahul July 14, 2026 at 4:35 am - Reply

    Great read! It would also be helpful to include the ex-dividend date, record date, and payment date for investors planning their portfolios.

  5. Eliza Morgan August 31, 2026 at 7:22 am - Reply

    The point about sequence-of-returns risk is particularly useful for investors approaching retirement. It also highlights why sustainable income sources and portfolio diversification matter, rather than relying solely on selling assets during market downturns. The discussion around flexible withdrawals and rebalancing adds a practical perspective to long-term portfolio planning.

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