COMING SOON! Freedom calculator will replace this bridging calculator! Launching 30th July 2026!!
Bridging – How to Retire Before Your Pension Starts
You’ve done the hard work. You’ve built your Freedom Fund. But what if you want to retire at 55 and your SIPP is locked up until 57? Or State Pension doesn’t kick in until 67? That gap can feel like a canyon stopping you from starting retirement early!
👉 What’s a bridge?
A bridge is the money you need to cover the gap between when you stop working and when your pensions or State Pension start paying out. It’s your financial rope bridge to freedom—so you can still live, eat pizza 🍕, and enjoy life without panic.
To make it easier to know how much you need to bridge the gap between the two we have created a handy calculator for you!
Your Bridging Blueprint
The bridging calculator helps you figure out how much you’ll need to cover the gap between your chosen retirement age and when pensions kick in. This is the stash that keeps you fed, housed, and happy. Without it, early retirement is just a dream.
🧮 What to enter into the calculator:
- Annual spending in retirement
Your expected yearly expenses once retired. - Desired retirement age
The age you’d like to stop working. - Age you can access your SIPP/DC pension
The earliest age you can access your private pension pots (currently 55, rising to 57 in 2028, with potential future increase to 58). - State pension age
When you’ll receive the State Pension.
👉 Use the State Pension Forecast Tool to find your exact age and projected amount. - State pension amount
Decide whether to include the State Pension in your calculations. Include it if you plan to rely on it. To exclude it, enter £0.
💡 Your bridge = freedom to stop working before the system says you can.
🇬🇧 Please note: This is a UK-specific calculator and based on current UK pension rules.
Use the Calculator NOW
Before we geek out on the details, let’s get practical. You are about to calculate the pot you need to survive the gap years.
👇 Pop your numbers in below and see what your bridge looks like.
Double-Bridge Calculator
| Total Freedom Fund needed: | £0 | |
|---|---|---|
| Split needed | ||
| ISA/GIA: | £0 | |
| SIPP/Pension: | £0 | |
| Total: | £0 | |
| Total Freedom Fund Needed (without state pension): | £0 | |
Seriously, do it now. We’ll wait. (Cue elevator music 🎵).
Why It Matters
This bridging step is critical to early retirement! Why?
- ✅ You can’t retire early without it.
- ✅ If you don’t plan it, you’re leaving free money on the table. SIPPs are more tax-efficient than ISAs—don’t miss out.
- ✅ You might end up working too long. A bridge could buy back YEARS of your life and freedom.
Skipping this step is like setting off on a road trip without checking if you have enough fuel. Spoiler: you don’t want to break down in the middle of Freedom Highway.
The Moving Parts
Here’s what makes up your bridge:
- Years to Bridge: How many years until pensions kick in?
- Annual Spending: What do you need to live your Rebel life?
- This assumes you’re investing in simple global index funds with low fees.
❌ No wealth managers.
❌ No high-fee IFAs. (Yes, 1% is HIGH.)
If none of this makes sense at all then help is at hand. Katie and I have created a free course that we give away once a year to help people with their finances. Sign up for Rebel Finance School here.
Nuances & Tips
💷 Tax Efficiency: Use ISAs first for tax-free withdrawals. Watch the Drawdown Special from Rebel Finance School for more on this.
🛡 SoRR Protection: Why a cash buffer matters. Watch Week 10 of Rebel Finance School to learn how to make your money last.
🎯 Lifestyle Choices: Big spends early? Plan for them.
⚖ Flexibility: Your bridge doesn’t have to be perfect—just strong enough to get you across.
Massive Thanks to John
We are ALL lucky John did the work to figure this stuff out for us! Huge thanks to John Buston for giving us the data, spreadsheets, and helping us understand the maths behind bridging. John’s contribution to the Rebel community and the whole Financial Independence community in the UK is legendary. 🙌
How This Works with the Retirement Calculator
Once you’ve figured out your bridge using this tool, the next step is to see how it fits into your overall retirement plan. That’s where Katie’s Retirement Calculator comes in. The bridging calculator tells you how much you need to cover the gap before your pensions kick in. The retirement calculator then shows you whether your total Freedom Fund (including that bridge) will last for the rest of your life. Together, these tools give you the full picture:
✅ Can you retire early?
✅ How much do you need outside your pensions?
✅ Will your money last for decades?
Call to Action
Run your numbers. Tweak your assumptions. Start sketching your plan. Your future self will thank you. Bridging isn’t scary—it’s empowering. Build your bridge and walk into freedom. 🚀
We would LOVE to know what you think. If you spot anything, find bugs or more please leave us a comment below. We are always working to improve these things!
this is so good thanks for all that you do
Thanks Ashley. We have had fun building it with Martin and John! Thank you for commenting
hi can you do a A dynamic spending Calculator strategy is a flexible retirement withdrawal approach to cover SoRR thanks ash
Hey Ashley, thanks for the message . When you say flexible what are the flexibilities do you want it to have? What would be the inputs and what would you want it to tell you? We love working on new ideas so tell us as much as you can… Alan
a flexible retirement withdrawal approach so good years 5% take out and bad ones take out 3% whth a cash buffer of 3 years ? thanks ash
got it. Make sense. We can include something about that this year…
Hi, Great and helpful calculator. Thank you
Thanks Aaron, it does make things simple to understand! Alan
Love this calculator thanks. Are the model assumptions somewhere? Is it possible to model different expenses or lump sum amounts like in some US FI calculators?
Hey Seaweed, we haven’t developed a version where you can play with the figures for this one yet. This was our first ever version we put together this year with the Ninjas. I will have to come back to you on the assumptions… Alan
All my comments in the survey were asking for this and you went above and beyond!
Ciaran, that is AWESOME. So glad we could deliver. There is so much we want to create and we are slowly building it all over the years. It is coming together! Alan
Love this thank you!! As we’ve already retired early (52) really happy to see it matches our own calculations – and those of our (now ex) IFA! Fabulous work!
JL that is fab! Congratulations. Love that and you made me smile with the ex IFA. We love empowering people to be able to do it themselves! Sending happiness. Alan
For the annual spending amount, do you put it in current value today, or inflation adjusted for intended retirement date? Thanks.
using todays figures! Thanks Christian!
Hey hey. We’ve been loving the course, highlight of our week.
Am a bit confused by the bridge calculation though. If I want to live off a bridge for 5 years at £33k (Total £165k) why does the calculator say I need £203k in my bridge fund?
What have I missed!
Thanks a million for all your efforts – it has been genuinely life changing.
Richie, THANK YOU for writing. The reason is SoRR, Sequence of returns risk. If you leave that money for your bridge invested then you need wiggle room for SoRR otherwise you risk running out on your bridge. If you kept it all in cash then you would only need to allow for inflation protection but that would leave you a LOT worse off over time as you would just spend it all and it wouldn’t grow. Does that make sense? ALan
Great tool thanks you
Thanks Kazza! you rock
The Bridge example in the Drawdown Demystified is spot on for my personal timeframe. Together with State Pension, if I also have a deferred DB pension (as well as DC ongoing one) where would you suggest I add this into the calculations please? (not sure if that alters the 52% State Pension or 48% DC Pension allocation for the 10 year bridge)
Hey Clare, if you have a lot of pots then we would use the Financial Forecasting workshop to plan that and model that out. The calculator only has a two pot system. If the dates are close you could add your third pot to one of the others. But the calculator only has two pots so that is the limitation. For more complex situations the financial forecasting workshop will help. Did you see that new workshop this year? Alan
Hi Alan and Katie, first of all, thanks so much for the fantastic course, this is really helping me have much more freedom on how I manage my life and I’m very grateful. I wanted to ask, to retire: the amount that I need in my pension, do i already need this amount at the time I retire (e.g if i retire early at 52) or at the time that I start to drawdown on the pension ( e.g when this becomes available, for my case at 58)?
Hey Aartee, you would need enough money to survive from 52 to 58 outside SIPPS and Pensions that are only accessible at 58. So you would need an amount outside in ISAs or Geneal accoutns to sustain you until you can access the SIPPs. Does that make sense? Alan
Hi Alan, Katie & John – amazing job on the calculator! This is sooooo helpful in helping me work out my bridge amount – 2 bridges as I’m aiming to be FI at 50. This is where I’ve always previously got stuck! I’m confident in my overall FI number, but was struggling to work out what I’d need to get me to SIPP age. I’m assuming for property e.g. buy to let – that generates income, I can include that in the bridge 1 and bridge 2 amount as the income is monthly and not age dependent – and doesn’t get ‘drawn down’ I just count the current value of the property (no mortgage)? Thx
Might be simplest, if it’s steady income, to just remove that income from the spending amount. For example, if your spending amount was £50k/year and your rental income was £1000/month, you could take £12k off your spending amount, to have that as £38k/year.
Thank you for this guys, just one question, how can I see what happens to the amounts in drawdown? Will my bridge be completely eroded?
hey Tory to get that answer the best thing to do is to do the financial forecasting spreadsheet which you can lay it all out and see every year’s figures. This calculator gives you a good answer but to see the year by year figures we would build the financial forecasting spreadsheet. Did you see that one? Alan https://rebeldonegans.com/finance/fire/forecasting/
Thanks so much for so generously sharing your time and experience in what has worked for you. I’ve been messing around with the calculator: for £43k spending requirement, retiring at 54 and SIPP/Pension available at 55, it says I need £53,450 in ISAs. I was wondering why that is please? Is it because it takes into account inflation? Or does it assume the ISA is in Stocks & Shares so you need more to mitigate for a loss? If cash, would the amount needed be £43k? #confusedbutkeentolearn
Hey Tonia, it is because of market fluctuations and if you want it invested. The easiest thing if you only have a year is to just do it in cash in a high interest savings account or something like that. That is the best way to do it. You would want some cash when retiring anyway to protect you from SoRR when you first retire. Does that make sense? Do you have a plan for SoRR? Do you have things like a DB pension or such that give you stability? Happy New Years! Alan
Thanks so much Alan (and Katie). No DB pension unfortunately and no way I’ll be retiring that early, but I just wanted to understand the calculator, so having some cash makes sense. Thanks again ever so much and wow! what a speedy reply :)
It is our pleasure Tonia, reach out any time! Happy New Year
Hi Katie & Alan,
I just enlisted the AI bot to work out if it’s worth paying some gaps in my NI. It took me through the various scenarios and offered to work it out for me or show me the maths to do it myself. Just what I needed. Thanks
Karen that is AMAZING. I love that it helped you do that. Thanks for telling us! sending happiness. Alan
Hi Katie and Alan, we have just finished the 10 week course. We are in a slightly different situation to most where we live in a house that comes as part of my husbands employment package, which is fantastic as it gives us a good gap. We are 44 and are very aware we will need somewhere to live when we retire (between 60-68). We are planning on withdrawing our LISAs which will part fund our house. Following the investment chart we should invest in order of LISA, SIIP, ISA. In our situation is this wise as our money will be locked in? Thank you
Hi, I’ve just started the course and am loving it! I used the calculator and got the answer I expected for my bridge. I’m just about on track too which is great! For retirement my pension fund is on track to be >2x what I need! But I’m scared to stop paying in/don’t want to lose out the tax break. If you have any advice on how to benefit from it earlier than 58/address the imbalance with the bridge fund, I’m all ears! I guess I just started paying in too much/too early when I should have been filling ISAs…
Hey Samuel, that is the power of compounding and then your SIPP takes off and you can’t stop it! The key phrase is “I don’t want to be the richest person in the graveyard” Oversaving at the expense of living your life is a real danger…. Alan
Please don’t replace this for now. The new calculator does not work well for those who have technically hit their total Freedom Fund number, but don’t have enough in their Accessible Investments to retire.
Loving the course.
Just wondering i will retire at 61 while my wife continues to work and will require 16k a year from sipp plus my DB. When I reach SP age at 67 my wife is looking to retire and I am hoping to support her by raising my total to 22k (SP and SIPP) plus DB. Is there a calculation to come up with a figure what I will need in my SIPP at 61 or will it be a case of working out what my sipp will need to be at 67 for a 22k drawdown. Then a separate calculation for my bridge 61-67. I just add once I get to 67 my DB and SP will cover all our bills and could cut back drawdown if markets fall.
Steve