Annuity Calculator for Your Retirement Plan
Add guaranteed annuity income to your plan and see exactly how it changes your retirement. Model immediate annuities (SPIAs), deferred income annuities, and QLACs — then watch the income flow into your Monte Carlo, cash flow, and income projections.
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Annuities are one of the few ways to turn savings into guaranteed lifetime income. Our annuity calculator lets you add one in plain English — no insurance jargon, no spreadsheets.
- Enter the payout amount and the age income begins
- Choose lifetime income or a fixed number of guaranteed years
- Add a cost-of-living (COLA) increase so payments keep pace with inflation
- Set a survivor benefit that continues income to your spouse
- Mark income as taxable or tax-free for accurate projections
SPIA, Deferred, or QLAC
Whether you already receive annuity payments or plan to buy one down the road, you can model it accurately:
- Immediate annuity (SPIA): Turn a lump sum into income that starts right away
- Deferred income annuity (DIA): Buy now, start income at a future age
- QLAC: A longevity annuity that starts later in retirement to hedge a long life
- Already-owned annuity: Enter the income you already receive with no purchase
See the Real Cost of Buying an Annuity
Thinking about buying an annuity in the future? Model the premium too. The purchase amount is drawn from your portfolio at the age you buy, and the income begins whenever payments start:
- Enter the premium and the age you plan to purchase
- The lump sum is withdrawn from your portfolio at that age
- Guaranteed income then begins at your chosen start age
- Monte Carlo shows whether trading a lump sum for lifetime income improves your odds
Annuity Income Flows Into Every Report
Adding an annuity isn't just a note in your plan — the guaranteed income is used everywhere it matters:
- Monte Carlo: Guaranteed income offsets withdrawals, raising your success probability
- Cash flow: Payments appear as income in the exact year they begin
- Income timeline: See the annuity stacked with Social Security, pensions, and withdrawals
- AI coach: Ask questions about your annuity and get answers grounded in your real numbers
Annuity Planning Questions
What is an annuity in a retirement plan?
An annuity is a contract that pays you guaranteed income — often for life — in exchange for a lump sum or series of payments. In your plan it acts as a stable income floor that reduces how much you need to withdraw from your portfolio.
Can I model buying an annuity in the future?
Yes. Enter the premium and the age you plan to buy. The lump sum is drawn from your portfolio at that age, and the guaranteed income begins whenever payments start — so you can see the full trade-off in your projections.
What types of annuities can I model?
Immediate annuities (SPIAs), deferred income annuities (DIAs), and QLACs (longevity annuities), plus any annuity you already own. You set the payout, start age, duration, COLA, survivor benefit, and tax treatment.
Does annuity income affect my Monte Carlo results?
Yes. Guaranteed annuity income offsets your spending each year, so less comes out of your portfolio. That typically raises your Monte Carlo success probability, especially in down markets.
Are annuity payments adjusted for inflation?
Only if your annuity has a cost-of-living rider. You can add a COLA increase so payments rise over time, or leave it off to model a flat payout — whichever matches your contract.
Is annuity income taxable?
Usually yes — income from a qualified annuity is taxed as ordinary income. You can mark an annuity as taxable or tax-free so your projections reflect the right after-tax picture.
Add Your Annuity to Your Plan Today
See how guaranteed income changes your retirement — in your Monte Carlo, cash flow, and income projections.
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