The real question isn't which pays more — it's which pays you more income to live on
Most lottery coverage frames lump sum vs annuity as a question of total payout. The annuity always wins on raw total — roughly 50% more over 30 years. But the right question for a trust beneficiary is: which option puts more money in your hands each year, and for how long?
The Dynasty model uses a 6.5% target return with 0.5% management fees and 2.5% inflation. Under these assumptions the lump sum delivers dramatically more net income in Years 1 through 24 — but the annuity's sustained 30 years of payments eventually build a larger corpus that overtakes the lump sum on income around Year 25. The decision depends on how much you weight early-decade income versus long-term endowment size.
Default scenario ($120M Powerball, California, 2 beneficiaries): In Year 1, the lump sum pays $241,877 net per person versus $9,893 for the annuity — because the annuity's Year 1 payment is only $1.14M after tax, producing a tiny corpus. By Year 10, lump sum income is $318,487 per person versus $126,946 for the annuity. Over the full first 10 years, each beneficiary receives $2.79M cumulative income from the lump sum versus $645K from the annuity — a $2.14M per-person income advantage. The annuity overtakes on net income per person around Year 25, once 25 escalating payments have built a larger corpus base.
When annuity makes sense
The annuity overtakes the lump sum on per-person income around Year 25 in the default scenario, and builds a larger long-run corpus from Year 30 onwards. The annuity wins if: the winner values long-term endowment size over early income, they lack access to institutional-quality investment management, they have poor financial discipline, or the jackpot is small enough that the lump sum would be consumed rather than invested. For beneficiaries who want maximum income in Years 1 through 24, the lump sum delivers substantially more.
The 5% annual escalation factor
Powerball and Mega Millions annuities escalate 5% per year. So the Year 1 payment is the smallest, and Year 30 is the largest. This is worth modelling explicitly — the Dynasty calculator includes this exact escalation schedule.
Tax treatment differs substantially
Annuity payments are taxed as ordinary income in the year received. Lump sum invested in a trust can be structured to generate a mix of ordinary income and long-term capital gains — the "optimised income mix" toggle in Dynasty models 60% ordinary / 40% capital gains. Capital gains are taxed at 15% for most beneficiaries, vs up to 37% for ordinary income. This difference compounds over decades.
State tax on the prize itself
Some states tax the lottery prize at receipt. California does not tax lottery winnings at the state level — but the federal 37% withholding still applies to the lump sum. The annuity spreads this withholding across 30 payments, which can produce a slightly different effective rate depending on marginal bracket movement.
How to model this yourself
The Dynasty calculator at endowmentatlas.com lets you switch between lump sum and annuity and see the full 100-year projection for each. The "Lump sum vs annuity" tab shows side-by-side corpus and income figures at Years 1, 10, 30, and 100, with the correct 5%/year escalation schedule.
Run the comparison for your jackpot
Enter your jackpot amount, state, and family details — see lump sum vs annuity side by side across 30 years, plus the full 100-year generational projection.
Open Dynasty calculator →Common mistakes in lump sum vs annuity analysis
- Using a flat investment return: returns vary year by year. The Dynasty model uses a real net return (6.5% minus fees and inflation) to produce inflation-adjusted figures.
- Ignoring the trust structure: the lump sum advantage assumes the money is invested, not spent. Without a trust forcing endowment-style distribution, most lump sum winners consume the capital.
- Comparing nominal figures: a $1M distribution in Year 100 is worth far less than $1M today. Dynasty shows both nominal and real figures.
- Not modelling beneficiary count: the per-person income depends on how many eligible family members there are. A $300K gross distribution split between 8 people is very different from split between 2.