United States retirement income: a worked example

Invented figures, not official pension rates. Ages are scenario inputs, not eligibility ages. Use a new SSA estimate whenever the claiming age or expected earnings change. Spouse and survivor benefits need their own official assessment.

What does this example show?

With spending of US$3,500 a month, an entered pension of US$2,200 from age 67, and no investment growth or inflation, the plan needs US$484,800 at age 64 to last until age 90. Of that, US$126,000 covers the period before the pension starts.

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Prepare the United States inputs

Separate the day you stop working from the day Social Security begins. Bring your personal benefit estimates and see how accessible savings could fund the years in between. SSA provides benefit estimates based on your earnings record. Stopping work and starting benefits are different decisions. Request a projection for each claiming age and future earnings assumption you want to compare; moving a date in this calculator does not recalculate Social Security.

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Every assumption in the baseline

Current age / stop working: 64 / 64
Plan until age: 90 (exclusive)
Accessible savings at retirement: US$484,800
Further saving: US$0 per month
Spending after tax: US$3,500 per month
Entered pension after tax: US$2,200 per month, age 67 onward
Other income streams: US$0
Net nominal return / inflation: 0% / 0% per year

All figures use today's purchasing power. The pension is an illustrative recurring payment. The model does not assess eligibility, taxes, access restrictions or a benefit increase for claiming later. The example uses zero return to make the arithmetic easy to reproduce; zero is not a return forecast.

Follow the two periods

Age 64 to 67: savings cover all spending.
3 years × 12 months × US$3,500 = US$126,000.
Age 67 to 90: the pension covers part of spending.
Monthly gap = US$3,500 − US$2,200 = US$1,300. Over 23 years, savings supply US$358,800.

Total capital needed: US$126,000 + US$358,800 = US$484,800. At a nonzero return, the calculator discounts each monthly gap. It never borrows against future pension income.

Change one assumption

Same starting savings and spending, different timing · USD
Scenario	Capital needed	Additional capital needed	Try it
Baseline bridge	US$484,800	US$0	Load scenario
Pension starts one year later	US$511,200	US$26,400	Load scenario
Plan for five more years	US$562,800	US$78,000	Load scenario

Delaying the same pension by one year increases the required savings by US$26,400. Planning five years longer adds US$78,000. Actual later-claiming benefits may differ: get a new official estimate before using a real alternative date.

What this leaves out

A pension payment belongs in an income field. Money used to buy that same pension must not also be counted as savings. For investment accounts, establish what is accessible and how withdrawals will be taxed before translating a statement balance into a spendable budget.

The result is a deterministic illustration with no market volatility, changing taxes, care-cost shock or inheritance target. Payments remain constant in real terms, which may overstate a pension that does not keep pace with prices. Three income streams are available; combine payments only when their dates and money basis match.

The first twelve-month budget in the calculator solves for a fundable spending level. It is a separate result from your entered target. In a stressed scenario it can be lower than the target; the capital-gap table above keeps the original spending target unchanged.

Official sources and review scope

Source descriptions checked 4 October 2026. This is an illustrative calculation, not a government benefit forecast. Read our editorial policy and review status.

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