Annuity vs Lump Sum Calculator

Enter your lump sum amount, annual payment, interest rate, and payment schedule to compare the long-term value of each option and find the break-even rate.

Created by Luis GonzalezLast updated: June 15, 2026

How to Use This Calculator

1
Enter the Lump Sum Amount
Input the one-time lump sum amount you could receive today.
2
Enter the Annual Payment Amount
Input the annual payment you would receive if you choose the annuity option.
3
Set the Annual Interest Rate
Enter the expected annual interest rate for investing the funds.
4
Choose Payments Per Year
Specify the payment frequency for the annuity option.
5
Enter the Number of Years
Input the total number of years annuity payments would continue.
6
Compare Results
Review the future value of the annuity payments and the comparison against the lump sum.

Example Calculation

A pension retiree choosing between a $300,000 lump sum and $24,000/year annuity paid monthly for 20 years at a 4% assumed investment rate.

Lump Sum Amount

$300,000

Annual Payment Amount

$24,000

Annual Interest Rate

Payments Per Year

Number of Years

Results

Future value of annuity payments

$733,972. The annuity option accumulates significantly more value over 20 years if payments are reinvested at 4%. However, the lump sum provides full control and liquidity from day one.

Tips

Consider Your Investment Discipline

The lump sum only beats the annuity if you actually invest it and earn the assumed rate. If you are likely to spend the lump sum, the annuity provides built-in discipline.

Account for Inflation and Taxes

Fixed annuity payments lose purchasing power over time due to inflation. A lump sum invested in a diversified portfolio may provide inflation protection that a fixed annuity cannot.

Evaluate Your Health and Longevity

If your life expectancy is shorter than the annuity term, the lump sum is typically more valuable. If you expect to live well beyond the term, the annuity provides income security.

Run Multiple Interest Rate Scenarios

The comparison is highly sensitive to the assumed rate. Test rates from 3% to 7% to see where the crossover point is between lump sum and annuity advantage.

The Annuity vs. Lump Sum Calculator compares taking a single large payment against receiving a series of regular annuity payments. It calculates future values, present values, break-even rates, and implied yields to clarify which option builds more wealth over time. For example, a $100,000 lump sum invested at 4% grows to $148,024 over 10 years, while $10,000/year in monthly annuity payments accumulates to $122,708 — a $25,316 advantage for the lump sum.

Making the Lump Sum vs. Annuity Decision

The choice between a lump sum and annuity payments balances immediate control and investment flexibility against a guaranteed income stream. A lump sum offers the potential for higher returns if invested wisely, but carries the risk of depletion. Annuities provide longevity protection and predictable income, which is particularly appealing for those concerned about outliving their savings. For many retirees, a blended approach — allocating 20-40% of their portfolio to guaranteed income sources like annuities while managing the rest as a lump sum — often proves optimal.

The Financial Mechanics of Payout Choices

Comparing a lump sum to an annuity involves projecting the future value (FV) of both options, as well as the present value (PV) of the annuity, using a consistent interest rate.

1. Future Value of a Lump Sum:

FV = PV x (1 + r)^n

2. Future Value of an Ordinary Annuity:

FV = PMT x [((1 + i)^n - 1) / i]

3. Present Value of an Ordinary Annuity:

PV = PMT x [(1 - (1 + i)^-n) / i]

Where PV is the lump sum amount, r is the annual interest rate, n is the number of years (or total periods for the annuity formula), PMT is the periodic payment, and i is the periodic interest rate (annual rate / payments per year).

💡 To plan your monthly and annual expenses in retirement, which can help inform your choice between a lump sum and an annuity, use our Retirement Budget Planner.

Worked Example: Comparing Payout Options

Consider an individual choosing between a $100,000 lump sum or an annuity paying $10,000 annually ($833.33/month) for 10 years, with a 4% annual interest rate.

Future Value of the Lump Sum: FV = $100,000 x (1.04)^10 = $100,000 x 1.48024 = $148,024
Future Value of the Annuity:
- Periodic payment: $10,000 / 12 = $833.33
- Periodic rate: 0.04 / 12 = 0.003333
- Total periods: 10 x 12 = 120 FV = $833.33 x [((1.003333)^120 - 1) / 0.003333] = $833.33 x [(1.49083 - 1) / 0.003333] = $833.33 x 147.25 = $122,708
Present Value of the Annuity: PV = $833.33 x [(1 - (1.003333)^-120) / 0.003333] = $833.33 x [(1 - 0.67077) / 0.003333] = $833.33 x 98.77 = $82,308
Implied Yield: Yield = ($122,708 / $100,000)^(1/10) - 1 = 2.07%

The lump sum wins by $25,316 in future value. The annuity's present value ($82,308) is $17,692 below the lump sum, and you'd only need a 2.07% annual return on the lump sum to match the annuity's accumulation.

💡 If you're weighing different retirement income strategies, our Retirement Drawdown Calculator can help you model how various assets could provide income over time.

Benchmarking Payout Choices in 2026

The relative attractiveness of lump sums vs. annuities shifts with market conditions. In higher interest rate environments, lump sums benefit more from compounding, while new annuity contracts may also offer better payout rates. Key considerations:

Current yield environment: Higher prevailing rates favor lump sum compounding but also improve new annuity payout rates
Inflation expectations: Lump sums can be invested in inflation-protected assets; fixed annuities lose purchasing power over time
Tax implications: Lump sums may trigger a large tax event in one year, while annuity payments spread the tax burden
Legacy planning: Remaining lump sum funds can be inherited; many annuities offer reduced or no death benefits

The 4% rule suggests a $100,000 lump sum can safely provide about $4,000/year indefinitely, compared to the annuity's $10,000/year for a fixed 10-year period — a trade-off between sustainability and higher near-term income.

Frequently Asked Questions

How do I decide between taking a lump sum or annuity payments?

Compare future values of both options at a realistic investment rate. Also consider spending discipline, tax situation, health and longevity, need for liquidity, and other guaranteed income sources.

Is a lump sum or annuity better for a pension payout in 2025?

In 2025, with higher interest rates, pension lump sums are relatively smaller compared to the annuity option, generally favoring the annuity for those who value guaranteed income. If you are in poor health or can invest at returns above 6-7%, the lump sum may be better.

What interest rate should I assume when comparing a lump sum to annuity payments?

Use what you could realistically earn: 3-4% for conservative investors, 5-6% for moderate, 7-8% for aggressive. Run the comparison at multiple rates to find the crossover point.

How do taxes affect the lump sum vs. annuity decision?

A lump sum may be taxable as ordinary income in the year received, potentially pushing you into a higher bracket. Annuity payments spread the tax over many years. Rolling a lump sum into an IRA defers taxes but limits access.

What role does life expectancy play in the lump sum vs. annuity choice?

If you expect to live significantly beyond average (age 85-90+), the annuity usually provides more total income. If health suggests a shorter life expectancy, the lump sum gives access to the full amount and can be passed to heirs.