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Mega Millions Payout Calculator (After Tax)

Estimate your Mega Millions take-home pay after federal and state taxes for both the lump-sum cash option and the 30-year annuity option.

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How to use this tool

  1. Enter advertised jackpot, cash option (% of jackpot), federal tax rate and state tax rate in the fields above.
  2. Results update instantly as you type โ€” or click Calculate.
  3. Read your lump sum net (after tax) and the full breakdown beneath it.

โš  This tool provides general estimates for education only and is not financial, tax or legal advice. Figures may not reflect your situation โ€” verify with a qualified professional.

Formula

Lump Sum Gross = Jackpot ร— Cash Option %

Lump Sum Net = Lump Sum Gross ร— (1 โˆ’ Federal Rate โˆ’ State Rate)

Annuity Annual = Jackpot / 30 payments

How it works

Mega Millions offers winners a choice between a one-time lump-sum cash option (typically about 60% of the advertised jackpot) and a 30-year graduated annuity paid in 30 annual installments. This calculator applies federal and state income tax rates to both options to estimate after-tax proceeds. Note that actual state tax rates vary by state, and some states (e.g., California, Texas) do not tax lottery winnings; consult a tax professional for personalized advice.

Worked example

$500 million jackpot, 60% cash option, 37% federal + 5% state tax

  1. Lump sum gross = $500,000,000 ร— 60% = $300,000,000.
  2. Federal tax = $300,000,000 ร— 37% = $111,000,000.
  3. State tax = $300,000,000 ร— 5% = $15,000,000.
  4. Total tax = $111,000,000 + $15,000,000 = $126,000,000.
  5. Lump sum net = $300,000,000 โˆ’ $126,000,000 = $174,000,000.

After-tax lump sum is $174,000,000; annuity pays $16,666,667/year ($9,666,667 after tax).

Common mistakes to avoid

  • Assuming the advertised jackpot is received as cash โ€” the jackpot is the annuity value; the cash option is typically 60% of the advertised amount before taxes.
  • Forgetting that the 24% federal withholding does not represent final federal tax liability; winners in the 37% bracket owe an additional 13% on filing, which is often overlooked in take-home estimates.
  • Ignoring state tax entirely or assuming it is the same across all states โ€” some states (California, Florida, Texas) do not tax lottery winnings, while others (New York, Maryland) impose substantial rates exceeding 8%.

Key terms

What is the cash option for Mega Millions?
The cash (lump-sum) option is a one-time payment of the present cash value of the jackpot, typically around 60% of the advertised jackpot amount, because the advertised figure assumes 30 years of investment returns on annuity payments.
How many payments does the annuity have?
The Mega Millions annuity is paid over 29 years (30 payments total): one immediate payment plus 29 annual payments, each 5% larger than the previous year.
Which states do not tax lottery winnings?
As of 2025, California, Florida, Texas, Washington, Wyoming, South Dakota, Tennessee, and New Hampshire do not tax state lottery winnings, though federal tax still applies.
What federal tax rate applies to lottery winnings?
Lottery winnings are taxed as ordinary income. The top federal marginal rate is 37% for 2025. An automatic 24% federal withholding applies at the time of payment, with the remainder due at tax filing.

Frequently asked questions

Is the annuity payout always 30 payments over 30 years for Mega Millions?
Yes. Mega Millions annuity is paid as one immediate payment followed by 29 annual payments, with each payment increasing by 5% per year. The first payment is smaller and later payments are larger.
Which option โ€” lump sum or annuity โ€” is better financially?
It depends on your investment return assumptions and tax situation. If you can invest the lump sum at returns exceeding roughly 5% annually after taxes, the lump sum may produce more wealth. The annuity protects against spending the entire prize and locks in payments even if markets underperform.
Can lottery winnings push me into a higher tax bracket on other income?
Yes. Lottery winnings are ordinary income. A large prize adds to all other income in that tax year, potentially pushing wages, dividends, or other income into higher brackets as well.

References & sources