Most retirement calculators are built for one person. A retirement calculator for couples has to hold two ages, two pots, two contribution rates and two State Pensions, then answer the only question that matters: when you are both retired, will the money cover the life you actually want? The calculator below does that in about a minute, with nothing to sign up for.
In short
A retirement calculator for couples projects each partner’s pension or savings pot to their own retirement age, combines the two, and works out the annual income that pot can sustainably pay alongside any State or government pension. Compare that income with the joint income you want and you get one of three answers: enough, a shortfall you can close by saving more or retiring later, or a surplus. The tool below is free, runs in your browser, and can be printed or saved as a PDF.
Retirement Calculator for Couples
Enter both of you, one target income for the household, and press calculate. Everything is editable afterwards, so try “what if we both saved £100 more” or “what if I retire two years later” before you decide anything.
Partner 1
Partner 2
Together
Combined pot when you’re both retired
–
Sustainable income per year
–
How long the pot lasts
–
Year-by-year projection
How to Read Your Result
Three numbers matter. The combined pot is what both of you have on the day the later of you stops working. The sustainable income is that pot multiplied by your withdrawal rate, plus your State Pensions. The years the pot lasts is a stress test: it draws your full target every year, rising with inflation, and tells you when the money runs out.
The default withdrawal rate is 4%. That figure comes from William Bengen’s 1994 work and the later Trinity study, both based on US market history, and it assumes a 30-year retirement. Several UK analyses put the safe figure closer to 3 to 3.5% because of lower expected returns and fees. If you want a cautious view, set it to 3.5%. The State Pension default is the full new UK State Pension for 2025/26, about £11,973 a year; check your own forecast at gov.uk and enter that instead.
What If One of You Retires First?
The calculator projects each pot to its owner’s retirement age, then leaves the earlier retiree’s pot invested until the second retirement. That is the most common real pattern: one partner stops or drops to part-time, and the household lives on the other salary for a few years. If you would draw on the first pot straight away, enter the same retirement age for both and treat the earlier years as a separate, smaller sum. The year-by-year table shows both pots so you can see the gap between the two retirement dates.
Other Retirement Calculators for Couples Worth Checking
Once you have a first answer, run it through a provider’s tool as a second opinion. Each of these handles a detail ours keeps simple.
- Fidelity UK pension drawdown tool — models drawdown from a UK pension with tax-free cash, useful once you have a combined pot figure.
- Vanguard retirement income calculator — tests how long a pot lasts under different withdrawal rates using market history rather than a fixed growth figure.
- T. Rowe Price retirement income calculator — US-focused, includes Social Security and lets you enter both spouses.
If a mortgage will still be running into retirement, the mortgage calculator shows what those repayments add up to, and the savings goal calculator turns the “save more a month” figure above into a dated plan.
The number is only half of it. The habits behind it are the other half.
Take the Financial Fitness Quiz →10 questions · free · find your money type
Frequently Asked Questions About Retirement Calculators for Couples
How much does a couple need to retire?
A quick rule: take the joint annual income you want, subtract both State Pensions, and multiply what is left by 25. That is the pot a 4% withdrawal rate needs. A couple wanting £40,000 a year with two full UK State Pensions would need roughly £400,000; the same couple with no State Pension would need about £1 million. The calculator above does this with your own numbers.
Should couples combine their pensions?
In the UK you cannot merge two people’s pensions into one, but you should plan them as one household. Two pots, two retirement ages and two State Pensions add up to one income, and the tax-free allowances work per person, so keeping them separate can actually be an advantage. Plan jointly, hold separately.
What if one partner retires earlier than the other?
Enter different retirement ages. The calculator grows the earlier retiree’s pot untouched until the second retirement, which matches the usual pattern of living on one salary for a few years. If you would draw on the first pot immediately, use the year-by-year table to see how much smaller it makes the combined figure.
Is the 4% rule safe for UK couples?
It is a starting point, not a guarantee. The 4% figure comes from US market history and a 30-year horizon. UK studies tend to land nearer 3 to 3.5% once lower expected returns and fees are included. Run the calculator at 4% and again at 3.5%; if the plan only works at 4%, it is tighter than it looks.
This calculator is for planning and education. It is not financial advice, it does not know your tax position, and it assumes steady returns that real markets never deliver. For decisions about pensions, drawdown or when to stop working, talk to a regulated adviser.
