Free calculator

Retirement calculator

Start from the income you want, not a number in the air. This works out the pot that income needs, whether your current saving gets there, and exactly what monthly amount would.

Your age30

Retire at65

Income you want in retirement£24,000/yr

On top of any State Pension. Most people need less than their working income; 60 to 70% is a common planning range.

Already saved£20,000

Saving per month£400/mo

Assumed annual growth6%

After fees, before inflation. 5 to 7% is a sober long-run equity assumption. 10% is optimism.

Pot this plan reaches

£732,355

Pot for £24,000/yr

£600,000

On track

100%

Monthly needed to hit it

£307/mo

Your pot35 years

The pot target uses the 4% guideline (annual income times 25), a rule of thumb from US historical data, not a law of nature: sequence risk, fees and a long retirement can all argue for drawing less. In the UK, shelter the journey in an ISA (£20,000 allowance for 2026/27) and a pension or SIPP (£60,000 annual allowance, with tax relief on the way in). From April 2027 the cash ISA limit falls to £12,000 for under-65s; the overall £20,000 stays, the remainder must go to investments, which for a retirement horizon is usually right anyway.

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Educational information, not financial advice. Figures current as of July 2026 where dated; allowances and rates change, so check the source before acting.