Gambling terms, explained straight

Lottery, Bingo & Number Games

Lump sum vs annuity formula

A formula that compares the cash value of a lottery jackpot paid immediately with the total of instalments paid over time, used to show the difference between the two payout options.

Powerball minimum jackpot
$20 million annuity
Annuity term
30 graduated installments over 29 years, each increasing 5% annually 1
First annuity payment
Approximately 1.505% of the jackpot amount 1

Key points

  • The lump sum is the present value of the future annuity payments, reflecting the time value of money, and is typically about half the advertised jackpot for Powerball 1.
  • Lottery annuities often span 20 to 30 years, with the winner choosing between the reduced cash value immediately or the full stream of payments 2.
  • The choice is a timing and valuation decision, not a change in the underlying jackpot amount 12.

Where this term is used

Not the same as

Lottery & bingo Lottery lump sum percentage Explains the percentage of the advertised jackpot that a winner receives as a lump sum. Lottery & bingo Lump sum lottery payout Covers the mechanics and tax implications of taking a lottery prize as a single cash payment. Lottery & bingo Lottery General overview of lottery games, including how jackpots are structured and paid. Lottery & bingo Pick 3 lottery Explains the daily number game where players choose three digits for a fixed prize. Lottery & bingo Jackpot lottery Describes lottery games with a top prize that rolls over until won. Lottery & bingo Scratch cards Covers instant-win lottery tickets with fixed prizes and no annuity option.

Sources

  1. Powerball en.wikipedia.org Provides Powerball's minimum jackpot, annuity term, payment schedule, and lump sum proportion.
  2. Lottery - Wikipedia en.wikipedia.org Supports the general description of lottery annuities and the lump sum as present value.

Sources are drawn from regulators, universities and published research, and each one is labelled with what it actually is — a preprint is not called a paper. Bookmaker and affiliate pages are never cited here, because a page that sells betting is not a neutral authority on it.

Written and maintained by Ellis Warrender, writer and maintainer.

Last updated 28 July 2026. Spotted an error? Tell me and it gets fixed and logged on the corrections page.