Ahh, OK.
Under that annuity payout approach, there is no way to compute a general answer to your question. It depends on how many payments over how long a time, what interest rate they are using, whether they use a level payout, or a rising payout over time advertised as an inflation correction, etc.
But we can give some general guidelines. Powerball (“PB”) publishes a pretty clear explanation of how their annuity payout works:
Powerball jackpot winners may choose to receive their prize as an annuity or a lump sum payment (cash option). Both advertised prize options are prior to federal and jurisdictional taxes. A jackpot winner who selects the annuity will receive one immediate payment followed by 29 annual payments that increase by 5% each year.
The cash value option, in general, is the amount of money required to be in the jackpot prize pool, on the day of the drawing, to fund the estimated jackpot annuity prize. The advertised jackpot annuity and cash value are estimates until ticket sales are final, and for the annuity, until the Multi-State Lottery Association takes bids on the purchase of securities. Check with your lottery for its rules on how to claim a jackpot prize and the correct procedure for selecting the annuity or cash value option.
Right now as I type PB is estimating tomorrow = Wed’s draw to have a $69M headline jackpot defined as the sum of the 30 payments over 30 years. But if you want all cash all right now, they expect to pay out $31.2M. Which is 45% of the headline number.
To clarify what that means, after the drawing they expect to have $31.2M to hand out. If you want it all now, you can have it all now. If instead you want the annuity, they will spend every one of those 31.2M dollars to buy an annuity which will pay 30 payments, each 5% larger than the last, with the first payment right away and the last payment 29 years hence. And it so happens that for the current interest rates, and the 5% rising payout rate, that $31.2M happens to buy an annuity whose 30 payments happen to add up to $69M.
The only financially sensible way to look at it is as a $31.2M payout. Money has value over time. Time affects the value of money. The 69M number is just to fool the rubes. It’s valid arithmetic, but it’s financial flimflam.
Over the years I’ve been watching PB, the cash/annuity ratio has fluctuated between almost 60% and down near 40%. It’s all a matter of what prevailing interest rates are, and whether the so-called “inflation correction” rate is 0%, 3%, 5% or whatever.
So we can take a WAG that for any $1M prize offered on the same terms, it’s really approximately a $450K cash prize.
Then we take out taxes.
If, like me, you live in a no-income-tax state, the Feds “only” want 37%. Because federal income tax rates are progressive, depending on what your pre-existing taxable income is, you may be paying 37% on all of the win, or only on part. Call it a 35% Federal tax hit on average, leaving you 65% of the payout. That’s $450K * 0.65 ~= $290K.
If you live in an income-taxing state, the total tax bite is about 40% (as noted above). So you keep 60% of the $450K = $270K.
From here down I’ll use the state-taxed $270K figure.
Then, if you want to keep the principal intact and live off the income from investing your $270K, it gets even less fun. Typically you can earn 2 or 3% above inflation with near total safety. 2% of $270K is $5,600. Yep, a bit over 5 grand. Per year. That you can spend.
But wait! There’s more!
You’ll have to pay income tax on your investment earnings. So 25-30% of the interest you earn on your $270K goes to the Feds. If we call it 25%, you can spend $5,600 * 0.75 = $4,200 yr.
Bottom line:
A $1M headline prize that’s worth $1M only if you naively add up 30 annual payments, that is actually awarded as cash today sets you up with about $4 grand per year of spendable income if you want to keep the principal intact over time.
If you’re willing to spend the prize principal too, now it’s just a matter of how long you want your one-time windfall of $270K to last: a week, a month, a year, 10 years?
You can see how winners quickly go broke thinking a) the headline $1M is a real number, and b) thinking it buys a big lifestyle in perpetuity. It does not.