Mega Millions Payout Calculator
Enter the jackpot, your state, and filing status to see exactly what you'd actually take home — lump sum vs. the full 30-year annuity, after federal and state tax.
The number on the billboard isn't the number you'd get
Every advertised Mega Millions jackpot is the annuity figure — the total you'd receive only if you take all 30 increasing annual payments over three decades. Most winners never see that full headline number in one place. Choose the lump sum cash option instead, and you get roughly half of it immediately; choose annuity, and taxes still take a meaningful bite out of every single payment along the way. This calculator walks through both paths in full, so the number you plan around is the one that's actually realistic.
There's no universally "correct" choice between lump sum and annuity — it depends on your tax situation, investment opportunities, and personal preference for having full control today versus a guaranteed income stream for 30 years. This tool is built to give you the actual numbers behind that decision rather than a generic recommendation.
How the lump sum and annuity options actually work
Lump Sum (Cash Option)
A one-time payment, typically 50-55% of the advertised jackpot depending on current interest rates. This represents the present-day cash value needed to fund the full annuity if invested at prevailing rates — essentially, the "real" value of the jackpot today rather than spread across 30 years.
Annuity (Full Jackpot)
30 payments over 29 years, with the first paid immediately upon claiming and each subsequent payment 5% larger than the one before it — a structure designed to help the payout keep pace with inflation. Taken in full, this option pays out exactly the advertised jackpot amount, before taxes.
Annuity First Payment = Jackpot ÷ [(1.05³⁰ − 1) ÷ 0.05]
Each of the 30 payments is 5% larger than the last, forming a growing geometric series that sums to the full advertised jackpot. This calculator solves that series directly to generate your exact year-by-year payment schedule, rather than approximating with a flat annual amount.
How lottery winnings actually get taxed
Federal law requires lottery agencies to withhold 24% for federal taxes immediately, before you receive a single dollar of your payout. That withholding, however, usually isn't your actual final tax bill — jackpot-sized winnings almost always push winners into the top federal bracket, 37% for the 2025 tax year, meaning most winners owe substantially more than the 24% withheld once they file. This calculator estimates that additional federal liability using the actual progressive tax brackets for your filing status, on top of showing the mandatory 24% withholding separately.
State tax adds another, highly variable layer. States like California, Florida, and Texas don't tax lottery winnings at the state level at all, while others like New York and Maryland apply some of the highest state tax rates in the country to lottery income. This calculator applies an approximate published rate for whichever state you select, so you can see how dramatically the same jackpot's after-tax value shifts purely based on where you claim it.
Worked example: $500 million jackpot, single filer, no state tax
At a 52% lump sum rate, the cash option comes to $260 million before tax. The mandatory 24% federal withholding takes $62.4 million immediately, and because $260 million lands deep in the top 37% bracket, the additional federal tax owed brings total federal tax to roughly $96.1 million — leaving an estimated net lump sum of around $163.9 million in a state with no lottery tax.
The annuity route instead starts with a first-year payment of roughly $7.5 million, growing 5% annually across 30 payments to eventually pay out the full $500 million. Because each individual payment is smaller than the lump sum, a portion of each year's payment falls at a lower marginal rate before reaching the top bracket — meaningfully reducing the effective tax rate on each individual payment compared to receiving the same total all at once.
Playing a different game, or want more control over the tax math?
If Powerball is more your game than Mega Millions, the exact same lump sum vs. annuity trade-off applies there too, just with slightly different jackpot structures — the Powerball calculator runs the same kind of side-by-side comparison for that game specifically. And if you want a more flexible, stripped-down tool focused purely on the tax side of any lottery win — adjustable brackets, custom state rates, and more granular control — the lottery tax calculator is built exactly for that.
Mega Millions payout calculator — FAQ
What's the difference between the lump sum and annuity payout options?
The advertised Mega Millions jackpot is always the annuity figure — the total you'd receive across 30 increasing annual payments. The lump sum, or cash option, is a smaller amount paid all at once, roughly 50-55% of the advertised jackpot depending on current interest rates, since it represents the present-day cash equivalent of funding those future annuity payments. Choosing lump sum means accepting a smaller total in exchange for getting all of it immediately rather than spread across three decades.
Why does the annuity payment increase every year instead of staying flat?
Each annual annuity payment is 5% larger than the one before it, a structure designed to help winnings keep pace with inflation over the 30-year payout period. The first payment is paid immediately upon claiming the jackpot, with 29 further payments following annually after that, each one 5% above the last, until the full advertised jackpot has been paid out.
How much tax will I actually owe on a Mega Millions win?
Lottery agencies are required to withhold 24% for federal taxes automatically before you receive any payout. However, because lottery jackpots are large enough to push winners into the top federal tax bracket (37% for 2025), most winners owe substantially more than the 24% withheld — this calculator estimates that additional federal tax liability on top of the mandatory withholding. State tax varies enormously, from 0% in several states to over 10% in others, and is applied on top of federal tax.
Do I pay less total tax by choosing the annuity instead of the lump sum?
Often, yes, in terms of the tax rate applied to any single payment — spreading the jackpot across 30 smaller yearly payments means each individual payment is more likely to avoid pushing you as deep into the highest tax brackets compared to one enormous lump sum in a single year. That said, this doesn't necessarily mean more money in your pocket overall, since you're also giving up decades of potential investment growth on money you could have taken as a lump sum and invested immediately.
What happens if I win the jackpot in a state different from where I live?
The state where you purchased and claimed the winning ticket typically withholds state tax based on its own rules, regardless of where you live. You may then still owe additional state tax when filing in your home state, depending on that state's tax treatment of out-of-state lottery winnings and any reciprocity agreements between the two states. This is a genuinely complex area of tax law, and consulting a tax professional familiar with multi-state lottery winnings is strongly recommended in this situation.
Is the lump sum percentage always the same?
No — the lump sum, or cash value, percentage of the advertised jackpot fluctuates based on prevailing interest rates, typically landing somewhere between 45% and 60% of the advertised annuity total. Higher interest rates generally push the cash value percentage down, since a smaller upfront sum can still be invested to grow into the full annuity total; lower rates push the percentage up. This calculator lets you adjust the assumed percentage directly to model different scenarios.
What if multiple people share the same winning ticket?
If a jackpot is split among multiple winners — whether through a lottery pool, joint ticket purchase, or a shared claim — each winner's share is typically divided before tax withholding is calculated, meaning each person's individual payout is taxed based on their own share rather than the full jackpot. This calculator includes a field to split the advertised jackpot evenly across a specified number of winners so you can estimate an individual share's after-tax payout.
Are these tax estimates exact?
No — they're informed estimates based on published federal tax brackets and commonly cited state tax rates on lottery winnings, not a substitute for professional tax advice. Actual amounts can differ based on your full tax situation, deductions, other income, specific state rules, and any changes to tax law after this tool was last updated. Anyone who actually wins a jackpot of this size should consult a qualified tax professional and financial advisor before making any decisions.
This calculator is for educational purposes only. It is not financial advice. Always consult a qualified financial advisor before making financial decisions.
