Lottery Annuity vs Lump Sum Calculator
A Smaller Number Today or a Bigger Number Spread Over 30 Years
Every major U.S. lottery jackpot winner faces the same choice: take a reduced lump sum immediately, or take the full advertised jackpot spread across roughly 30 annual annuity payments. Comparing the two fairly requires discounting the annuity's future payments back to today's dollars, since a dollar received in year 25 is worth less than a dollar received today. This calculator runs that present-value comparison using your assumed discount rate, so the two options are judged on the same basis.
The Formula
Annual Payment = Jackpot ÷ Number of Years
Present Value of Annuity = Payment × (1 − (1 + r)−n) ÷ r
This uses a simplified model of equal annual payments; real-world lottery annuities (such as Powerball's) actually graduate payments upward by roughly 5% per year rather than paying an equal amount each year, so treat the result as a reasonable estimate rather than an exact replica of any specific lottery's payment schedule.
Where This Matters
- The lump sum vs. annuity decision itself — this is the central financial decision every jackpot winner has to make within days of coming forward, and the "right" answer depends entirely on the discount rate assumption.
- Choosing a realistic discount rate — a higher assumed rate of return (or personal discount rate) favors the lump sum, since it implies you could grow the smaller upfront amount faster than the annuity's fixed schedule; a lower rate favors the annuity.
- Understanding why the lump sum is always less than the jackpot — the lump-sum percentage (commonly around 50–60% of the advertised jackpot) reflects the discounted present value lotteries use internally to fund either payout option from the same prize pool.
| Discount rate | Annuity present value | Lump sum |
|---|---|---|
| 3% | $326,674,022.49 | $260,000,000.00 |
| 5% | $256,207,517.11 | $260,000,000.00 |
| 7% | $206,817,353.06 | $260,000,000.00 |
At a 3% discount rate the annuity's present value exceeds the lump sum; at 7% the lump sum comes out ahead — the crossover point in this example sits between 5% and 7%.
How to Use This Calculator
- Enter the advertised jackpot (the full annuity total).
- Enter the annuity years (defaults to 30, the standard for major U.S. lotteries).
- Enter the lump sum percentage of the jackpot (defaults to 52%).
- Enter your assumed discount / investment rate.
- Select Calculate to compare the lump sum against the annuity's present value.
Related Calculations
Estimate the tax impact with the Lottery Tax Calculator, or check a multi-winner split with the Lottery Jackpot Split Calculator.