For this 35-year-old renter, saving £500 a month funds the modeled £2,400 monthly retirement budget from age 68 through 90 at both tested returns. The deposits are in 2026 pounds and would need to rise with inflation to maintain their purchasing power. At the lower return the plan finishes with about £61,000, compared with about £238,000 at the central return. Starting at £500 and stepping up to £1,000 at 45 can buy more room for unexpected costs if the higher deposit fits the household budget by then.
Every tested path funds the same budget through the end of age 90. The amounts above are the balances left in the investment pot, rounded to the nearest £1,000 in 2026 pounds. The model starts with £15,000 invested. At 68, the £500 plan has about £390,000 before the first withdrawal at the central return, versus £738,000 if £1,000 was saved from the start. Stepping up at 45 builds about £592,000 by that point.
The renter stops saving and retires at 68 in each path. They spend £1,100 a month on rent and £1,300 on everything else in retirement, both held flat in real terms. The example assumes £1,000 a month of State Pension income available to spend from age 68. The invested pot covers the remaining £1,400 each month.
The full new State Pension is £241.30 a week in 2026/27. Check your own forecast because entitlement depends on your National Insurance record. Age 68 is in the current timetable for the example's birth cohort, and policy can change before they retire. State Pension amount, State Pension timetable, Check your State Pension forecast.
The planner uses a single pot and assumes the stated contributions reach it. Use your own take-home pay and bills to see what you can afford to save. For context, UK one-bedroom rents averaged £1,140 a month in September 2026. Rent in your area can differ materially. The model leaves tax calculations, pension and ISA access rules, one-off care costs and periods of lost earnings to your own planning. ONS private rents, Tax when you get a pension.
The preview opens on Save £500. Choose a different saving schedule, or choose the matching lower-return case to see the effect of that change alone. Each return is constant in the model. The comparison gives no probability of running out of money.
Edit your opening savings, planned rent and pension income in the preview. If your retirement age changes, check the savings end age and pension start age separately. Choose Use this plan to save an editable copy.
