Retirement Income Calculator: Monthly Income From a Nest Egg
Work out the monthly income a retirement nest egg can provide — and for how long, before the pot is exhausted.
Adjust the inputs and select Calculate for a full breakdown.
Compare Common Scenarios
How the numbers shift across typical situations for this calculator:
| Scenario | Monthly income | Total drawn | Growth while drawing |
|---|---|---|---|
| $800k · 5% · 25yr | $4,676.72 | $1,403,016.10 | $603,016.10 |
| $500k · 4% · 30yr | $2,387.08 | $859,347.53 | $359,347.53 |
| $1.2M · 6% · 25yr | $7,731.62 | $2,319,485.05 | $1,119,485.05 |
| $350k · 4.5% · 20yr | $2,214.27 | $531,425.48 | $181,425.48 |
How This Calculator Works
Enter your retirement savings, the return you expect the remaining balance to earn, and the number of years the money must last. The calculator finds the fixed monthly income that draws the pot down to exactly zero at the end of the period.
The Formula
Fixed-Period Drawdown
PV = savings pot, r = monthly rate (annual ÷ 12), n = number of monthly payments
Worked Example
An $800,000 pot earning 5% over a 25-year retirement supports about $4,677 a month. Across those years you draw roughly $1.4 million in total — far more than the pot, because the balance keeps earning while it is spent down.
Key Insight
Growth on the shrinking balance does heavy lifting: more than a third of the total income here comes from returns earned during retirement, not the original savings. A drawdown plan that ignores that growth badly understates the income a pot can support.
Three-bucket retirement income strategy
Most successful retirees use a 'bucket' approach to manage sequence-of-returns risk and income reliability. Bucket 1 (years 1-2): pure cash + short Treasuries. Funds living expenses without selling investments. Removes pressure to sell at bad times. Sized to ~$80k-150k depending on lifestyle.
Bucket 2 (years 3-10): bonds and bond funds with conservative mix. Provides moderate growth while remaining defensive. Replenishes Bucket 1 as it depletes. Typically 30-40% of portfolio. Bucket 3 (year 11+): stocks for long-term growth. Highest expected return but volatile. 50-60% of portfolio. Refills Bucket 2 over time as it depletes.
Mechanics: each year, withdraw living expenses from Bucket 1. When Bucket 1 hits 1 year of expenses, refill from Bucket 2. When markets are strong, also refill Bucket 2 from Bucket 3. When markets are weak, hold Bucket 3 (don't sell low) — Bucket 2 absorbs the cash flow until markets recover. This systematic approach beats ad-hoc selling for psychological and financial reasons.
Social Security maximization: claim age decisions
Social Security benefit depends heavily on WHEN you claim. Earliest claim age: 62 (with 25-30% permanent reduction from full benefit). Full retirement age (FRA): 66-67 depending on birth year (67 for those born 1960+). Latest claim: 70 (with 24-32% increase above FRA, depending on FRA).
Mathematical break-even: claiming at 62 vs 67 — break-even at age 78-79. So if you live past ~80, delaying paid off; before 80, claiming early won. For most healthy 62-year-olds (average remaining life ~22 years), DELAYING wins. But longevity uncertainty makes early claiming reasonable for some.
Spousal benefits: married couples can game claim timing. Higher earner often delays to 70 (max benefit, also provides max survivor benefit for spouse). Lower earner claims earlier (provides income meanwhile). For widow/widower: spousal survivor benefit equals deceased's benefit at time of death — making the higher earner's claim decision matter for both spouses' lifetimes. Worth running through ssa.gov/myaccount calculator with multiple scenarios.
Tax planning in retirement: which accounts to draw from when
Retirees typically have three account 'buckets' from a tax perspective: TAX-FREE (Roth IRA, Roth 401k, HSA for medical), TAX-DEFERRED (Traditional IRA, 401k — taxed at withdrawal as ordinary income), and TAXABLE (brokerage — long-term capital gains rates).
Conventional wisdom: draw from TAXABLE first, then TAX-DEFERRED, then TAX-FREE last (let Roth compound longest). But this isn't always optimal. Modern thinking: aim for 'tax smoothing' — draw enough from each bucket to keep taxable income in low brackets. Use TAXABLE for basic living expenses, TAX-DEFERRED to fill up to top of low brackets (12% or 22%), keep TAX-FREE as last-resort and inheritance vehicle.
Roth conversion ladder strategy: in early retirement years before RMDs and Social Security (ages 65-72 maybe), convert chunks of Traditional IRA to Roth at the low tax rate available those years. Pay 12-22% tax now to avoid potentially 24-37% RMD-driven tax bracket in your 70s+. Sophisticated retirees can save $100k-500k+ over retirement through systematic Roth conversions during low-income years.
Annual income from retirement portfolio (4% safe withdrawal rule)
Pre-tax annual income from various portfolio sizes using the 4% rule (sustainable for 30-year retirement). Add Social Security (~$25-35k typical) and other guaranteed income separately.
| Portfolio size | 4% annual income | 3.5% (conservative) | 5% (aggressive) |
|---|---|---|---|
| $500,000 | $20,000 | $17,500 | $25,000 |
| $1,000,000 | $40,000 | $35,000 | $50,000 |
| $1,500,000 | $60,000 | $52,500 | $75,000 |
| $2,000,000 | $80,000 | $70,000 | $100,000 |
| $3,000,000 | $120,000 | $105,000 | $150,000 |
Pre-tax — actual after-tax depends on account types (Roth tax-free, Traditional taxed as income, taxable at capital gains rates). For 30-year retirements: 4% is widely considered safe. For 40+ year (early retirement): 3.0-3.5% is more conservative. The 5% rate is aggressive — only with significant flexibility to cut spending in bad market years.
Frequently Asked Questions
How long should the payout period be?
Long enough to cover a realistic lifespan in retirement. Many planners use 25 to 30 years; outliving the period means the income stops while you do not.
What return should I assume?
A retiree's portfolio is usually more conservative than a younger one. A rate between cash and a balanced portfolio is common; a lower rate is the cautious choice.
Does this account for inflation?
No. The monthly income is a fixed nominal figure. Because prices rise, the same income buys less each year, so consider a higher pot or a shorter horizon.
What happens after the payout period?
The pot is fully drawn down and the income stops. This model deliberately depletes the savings; a plan to leave money behind needs a smaller withdrawal.
Is this the same as the 4% rule?
Related but not identical. The 4% rule is a withdrawal guideline meant to last indefinitely; this calculator finds the income for a fixed, defined period.
References & Authoritative Sources
- Social Security Administration — Retirement benefits planning and claim age calculator · consulted May 31, 2026 · Federal agency — official Social Security benefit estimator, claim strategies
- Trinity Study (Cooley/Hubbard/Walz, original 1998) — Safe withdrawal rate research · consulted May 31, 2026 · Academic foundation of the 4% rule — historical success rates by withdrawal %
- IRS Publication 590-B — IRA Distributions — Required Minimum Distributions and retirement income tax · consulted May 31, 2026 · Tax authority — RMD rules, qualified distribution definitions, tax treatment
Related Calculators
Data Sources & Benchmarks
This calculator draws on 3 independent, dated sources. The starting values for expected annual return are taken from the benchmarks below and refresh whenever the snapshots are updated.
Methodology & Review
The monthly income is the fixed amount that draws the savings pot down to zero over the period, with the remaining balance earning a steady return. Inflation and tax are not applied.
Updated