Annuity vs lump sum decisions arise with pensions, structured settlements, lottery winnings, and insurance payouts. The choice depends on your life expectancy, investment ability, and need for guaranteed income. This calculator computes the present value of an annuity stream, compares it to a lump sum, and finds the break-even age — the point at which the annuity overtakes the invested lump sum.
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How to Compare Annuity vs Lump Sum Options
The annuity vs lump sum decision is one of the most consequential financial choices many people face. Pension recipients, lottery winners, structured settlement recipients, and those inheriting annuities all face this tradeoff. The mathematically correct answer depends on three variables: your discount rate, your life expectancy, and your financial discipline.
Step 1: Enter the Lump Sum and Annual Payment
Enter exactly what's being offered: the one-time lump sum amount and the annual payment the annuity would provide. For pensions, this is straightforward. For lottery winnings, note that the "jackpot" is the annuity value paid over 29 years — the actual lump sum is typically 50-60% of the advertised amount before taxes.
Step 2: Choose a Realistic Discount Rate
The discount rate is what you believe you can earn by investing the lump sum. At 5% (conservative), the lump sum grows less, making the annuity more attractive. At 8% (aggressive equity returns), the lump sum grows more, making it competitive. Most financial advisors use 4-6% for retirement-focused comparisons. The break-even age changes significantly with this assumption.
Step 3: Understand Break-Even Age
Break-even age is the age at which cumulative annuity payments plus their reinvestment value equal what the invested lump sum would have grown to. If average life expectancy for your demographic is 80 and break-even is 75, the annuity wins on average. If break-even is 85, you'd need exceptional longevity for the annuity to come out ahead.
Beyond the Math: Other Factors
The calculator handles the financial math, but several non-financial factors favor each option. Annuity advantages: guaranteed income you can't outlive, simplicity, no investment decisions. Lump sum advantages: flexibility for large expenses, inheritance potential, ability to beat the annuity rate with good investing, and protection if the annuity issuer becomes insolvent. Diversifying — taking partial lump sum plus partial annuity — is a valid middle path.
Frequently Asked Questions
Is this annuity vs lump sum calculator free?
Yes, completely free with no signup required. All calculations run locally in your browser.
When is a lump sum better than an annuity?
A lump sum is generally better if you have a shorter life expectancy, need flexibility, have investment skills to grow the money, or want to leave an inheritance. If you invest the lump sum at a rate exceeding the implied annuity yield, you come out ahead before the break-even point.
When is an annuity better than a lump sum?
An annuity is generally better if you have longevity in your family, struggle to manage lump sums, want guaranteed income you can't outlive, or if the implied yield is competitive with market alternatives. Annuities protect against the risk of running out of money in old age.
What discount rate should I use?
The discount rate reflects what you could earn investing the lump sum. Common choices: 4-5% for conservative investors, 6-7% for moderate investors, 8-10% for aggressive investors. Higher discount rates favor the lump sum. For pension comparisons, many actuaries use 4-6%.
How is the break-even age calculated?
Break-even age is the age at which total cumulative annuity payments equal the future value of the lump sum (if invested at your chosen discount rate). If you live beyond break-even, the annuity wins. If you die before break-even, the lump sum would have been better.
Should taxes affect my decision?
Yes. Lump sums from pensions or 401(k)s are taxable immediately in the year received, potentially pushing you into a higher bracket. Annuity payments spread that tax burden over years. Consult a tax advisor — the after-tax comparison often differs significantly from the pre-tax numbers this calculator shows.