Mega Millions Calculator

Q: What is the lump sum cash value of a Mega Millions jackpot?

The lump sum cash value is about 61% of the advertised jackpot. For example, if the jackpot is $637 million, the cash value would be roughly $388.57 million before taxes. This is the actual prize pool amount. The higher advertised number reflects what you would receive if you chose the annuity paid out over 29 years.

Q: What is the annuity factor used in this calculator?

This calculator uses an annuity factor of 66.4388 . The advertised jackpot is divided by this number to find the first annual payment. Each of the 30 payments then grows by 5% over the previous one. This matches the graduated payment structure that Mega Millions uses for the annuity option.

Q: Which states do not tax Mega Millions winnings?

These states and territories have no state tax on lottery winnings: California, Florida, New Hampshire, South Dakota, Tennessee, Texas, Washington, Wyoming, and the US Virgin Islands. If you live in one of these places, you only pay federal tax on your prize.

Q: Is the lump sum or annuity better?

It depends on your goals. The lump sum gives you less money upfront, but you can invest it and potentially earn more over time. The annuity gives you more total money and steady income for 29 years, but you cannot access it all at once. Many financial experts say the lump sum is better if you invest wisely, but the annuity provides built-in spending discipline.

Q: Do I owe extra tax if I pick the 24% withholding option?

Most likely, yes. The 24% rate is just what gets withheld at payout . A large jackpot pushes your income into the top federal bracket of 37%. You would owe the difference between 37% and 24% when you file your tax return. Select the 37% option in this calculator to see a more realistic estimate of your total federal tax.

Q: How do New York City and Yonkers taxes work for lottery winners?

New York City residents pay New York State tax (10.9%) plus a city tax (3.876%) for a combined rate of 14.776% . Yonkers residents pay state tax plus a local surcharge of 1.477% for a combined rate of 12.377% . Select "New York City, NY" or "Yonkers, NY" in the state dropdown to see these combined rates applied.

Q: How many annuity payments does Mega Millions pay?

Mega Millions pays 30 annual payments over 29 years . The first payment comes right after you claim the prize. Each following payment is 5% larger than the one before it. This 5% annual increase is designed to help your income keep pace with inflation.

Q: What does the effective tax rate mean?

The effective tax rate is the total percentage of your gross payout that goes to taxes. It combines your federal and state taxes into one number. For example, if you pay 24% federal and 10.9% state, your effective tax rate is 34.9%. This tells you at a glance how much of every dollar goes to the government.

Mega Millions Calculator

Updated Jul 14, 2026 By Jehan Wadia

Lump Sum vs. Annuity — After-Tax Comparison

Lump Sum — Cash Option

Cash Value (61% of jackpot)$0.00

Federal Tax (24%) $0.00

State Tax (0%) $0.00

Total Taxes Withheld$0.00

Net Payout (Take-Home)$0.00

Effective Tax Rate 0.0%

You Keep: 0.0% of the jackpot

Annuity — 30 Graduated Payments

Gross Total (Advertised Jackpot)$0.00

Federal Tax (24%)$0.00

State Tax (0%)$0.00

Total Taxes Withheld$0.00

Net Total Payout (Take-Home)$0.00

Effective Tax Rate0.0%

You Keep: 0.0% of the jackpot

Introduction

Winning the Mega Millions jackpot is exciting, but taxes take a big chunk of your prize before you see a dime. This free Mega Millions calculator shows you exactly how much money you take home after federal and state taxes. Enter any jackpot amount, pick your state, and instantly compare the two payout options: a one-time lump sum cash payment or 30 annual annuity payments spread over 29 years.

The calculator breaks down your federal tax withholding, state tax deductions, and net payout for both options side by side. You also get a full 30-year annuity schedule, a visual chart of how your payments grow over time, and a step-by-step math solution so you can see how every number is calculated. Whether the jackpot is $20 million or $1 billion, this tool helps you understand what you actually keep. For a broader look at lottery winnings across all games, try our Lottery Tax Calculator.

How to Use Our Mega Millions Calculator

Enter a few details about your jackpot and taxes below. The calculator will show you how much money you take home after taxes for both the lump sum and annuity payout options.

Advertised Jackpot Amount: Type the total jackpot prize in dollars. You can type any amount and the commas will be added for you. You can also click a preset button like $100M or $1 Billion to fill in the amount fast.

Federal Tax Rate / Filing Status: Pick your federal tax rate from the dropdown. Choose 24% for the standard withholding rate taken at payout, or choose your filing status at the 37% top bracket to see what you may owe when you file your return. If you want to explore how federal income tax brackets work in more detail, use our Tax Bracket Calculator.

State or Locality: Select the state or territory where you live. Each state has a different tax rate on lottery winnings. Some states like Florida and Texas have no state tax. If you live in New York City or Yonkers, pick those options for a more accurate estimate that includes local taxes. You can also use our State Tax Calculator for a deeper look at how your state taxes income.

Calculate & Reset: Press Calculate to see your results. Press Reset to return all fields to their default values and start over.

How the Mega Millions Calculator Works

Mega Millions is one of the biggest lottery games in the United States. Tickets cost $2 each, and drawings happen every Tuesday and Friday night. To win the jackpot, you must match all five white balls (numbers 1 through 70) plus the gold Mega Ball (numbers 1 through 25). The odds of winning the jackpot are about 1 in 302.6 million. That number comes from the total number of possible ticket combinations — if you want to understand the math behind it, our Combination Calculator and Probability Calculator explain how those odds are derived.

If you win, you get to pick how you receive your money. You can take a lump sum or an annuity. The lump sum gives you one big payment right away, but it is smaller than the advertised jackpot — usually about 61% of the total. Our Lumpsum Calculator can help you model what a single large investment might grow into over time. The annuity pays you the full jackpot amount spread over 30 payments across 29 years. Each annuity payment grows by 5% over the one before it to help keep up with inflation. To understand how inflation erodes purchasing power over the decades, see our Inflation Calculator. You can also use our Annuity Calculator to compare the Mega Millions annuity structure with other annuity products.

No matter which option you choose, you will owe taxes on your winnings. The federal government withholds at least 24% from lottery prizes — similar to how large bonuses are withheld, which you can explore with our Bonus Tax Calculator. If you are in the top tax bracket, you may owe up to 37% in federal income tax when you file your return. Our Income Tax Calculator can help you estimate your total federal tax liability based on your full income picture. Most states also charge their own income tax on lottery winnings. A few states, like California, Florida, Texas, and Tennessee, do not tax lottery prizes at all.

This calculator estimates your after-tax take-home pay for both the lump sum and the annuity. Enter any jackpot amount, pick your federal tax rate, and select your state. The tool instantly shows how much goes to taxes and how much you keep — for a quick check on any income scenario, our Take Home Pay Calculator works the same way for regular earnings. It also builds a full 30-year annuity schedule so you can see how each payment grows over time. The Effective Tax Rate Calculator can give you a closer look at the overall percentage of your winnings lost to combined taxes.

Keep in mind that these numbers are estimates. Your actual tax bill depends on your total income, deductions, filing status, and any local taxes that may apply. You may also want to use our Investment Calculator or Compound Interest Calculator to see how investing a lump sum payout could grow your wealth over time. Always talk to a qualified tax professional or financial advisor before making decisions about a large lottery prize.

Formulas used

Cash Value (Lump Sum Gross)

\text{Cash Value} = \text{Jackpot} \times 0.61

First Annuity Payment

P_1 = \frac{\text{Jackpot}}{66.4388}

Annuity Payment in Year n

P_n = P_1 \times 1.05^{\,(n-1)}

Net Lump-Sum Payout

\text{Net Lump Sum} = \text{Cash Value} - (\text{Cash Value} \times r_{\text{fed}}) - (\text{Cash Value} \times r_{\text{state}})

Net Annuity Payment per Year

\text{Net}_n = P_n \times (1 - r_{\text{fed}} - r_{\text{state}})

Effective Tax Rate

\text{Effective Rate} = \frac{\text{Total Taxes}}{\text{Gross Payout}} \times 100\%

Frequently asked questions

How much tax do you pay on Mega Millions winnings?

You pay both federal and state taxes on Mega Millions winnings. The federal government withholds 24% right away. If you are in the top tax bracket, you may owe up to 37% federal tax when you file your return. State taxes range from 0% to 14.776% depending on where you live. Use this calculator to see your exact combined tax amount for any jackpot size and state.

What is the lump sum cash value of a Mega Millions jackpot?

The lump sum cash value is about 61% of the advertised jackpot. For example, if the jackpot is $637 million, the cash value would be roughly $388.57 million before taxes. This is the actual prize pool amount. The higher advertised number reflects what you would receive if you chose the annuity paid out over 29 years.

What is the annuity factor used in this calculator?

This calculator uses an annuity factor of 66.4388. The advertised jackpot is divided by this number to find the first annual payment. Each of the 30 payments then grows by 5% over the previous one. This matches the graduated payment structure that Mega Millions uses for the annuity option.

Which states do not tax Mega Millions winnings?

These states and territories have no state tax on lottery winnings: California, Florida, New Hampshire, South Dakota, Tennessee, Texas, Washington, Wyoming, and the US Virgin Islands. If you live in one of these places, you only pay federal tax on your prize.

Why is the annuity total different from the advertised jackpot?

The advertised jackpot is the annuity total. When you add up all 30 graduated payments, they equal the full jackpot amount. Because each payment grows by 5% per year, the first payment is smaller and the last payment is the largest. The total across all 30 years matches the jackpot number you see on the news.

Is the lump sum or annuity better?

It depends on your goals. The lump sum gives you less money upfront, but you can invest it and potentially earn more over time. The annuity gives you more total money and steady income for 29 years, but you cannot access it all at once. Many financial experts say the lump sum is better if you invest wisely, but the annuity provides built-in spending discipline.

Do I owe extra tax if I pick the 24% withholding option?

Most likely, yes. The 24% rate is just what gets withheld at payout. A large jackpot pushes your income into the top federal bracket of 37%. You would owe the difference between 37% and 24% when you file your tax return. Select the 37% option in this calculator to see a more realistic estimate of your total federal tax.

How do New York City and Yonkers taxes work for lottery winners?

New York City residents pay New York State tax (10.9%) plus a city tax (3.876%) for a combined rate of 14.776%. Yonkers residents pay state tax plus a local surcharge of 1.477% for a combined rate of 12.377%. Select "New York City, NY" or "Yonkers, NY" in the state dropdown to see these combined rates applied.

How many annuity payments does Mega Millions pay?

Mega Millions pays 30 annual payments over 29 years. The first payment comes right after you claim the prize. Each following payment is 5% larger than the one before it. This 5% annual increase is designed to help your income keep pace with inflation.

What does the effective tax rate mean?

The effective tax rate is the total percentage of your gross payout that goes to taxes. It combines your federal and state taxes into one number. For example, if you pay 24% federal and 10.9% state, your effective tax rate is 34.9%. This tells you at a glance how much of every dollar goes to the government.

Can I use this calculator for past Mega Millions jackpots?

Yes. Type any jackpot amount into the input field. It does not have to match the current drawing. You can enter any past jackpot, like the record $1.537 billion prize from 2018, and the calculator will estimate your after-tax payout based on the rates you select.

Are these results exact or estimates?

These results are estimates. Your actual tax bill depends on your total income, deductions, filing status, and any local taxes. The calculator uses flat rates and does not account for marginal bracket steps, deductions, or credits. Always consult a tax professional or financial advisor for exact figures before making decisions about a large lottery prize.

What is the maximum jackpot amount I can enter?

You can enter up to $10 billion ($10,000,000,000). If you type a number higher than that, the calculator caps it at $10 billion and shows a notice. This limit is well above any jackpot in Mega Millions history, so it covers all realistic scenarios.

Does this calculator include local taxes beyond state tax?

It includes local taxes for New York City and Yonkers because those are the most common local taxes that apply to lottery winners. Other cities or counties may also have local income taxes, but they are not built into this tool. Check with a local tax professional if your area charges additional local taxes.

Why does Delaware show a tax rate if it does not withhold at payout?

Delaware does not withhold state tax at the time of payout, but winners may still owe up to 6.6% state income tax when they file their annual return. The calculator shows this rate so you can see what your potential tax bill might be at filing time, even though nothing is taken out up front.