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TSP annuity calculator

Analyze a TSP life-annuity estimate without pretending a public interest rate can reproduce the insurer's complete pricing.

Rule snapshot
Reviewed
Primary sources
TSP.gov annuity methodology
Privacy
Entries are calculated in this browser

Life-annuity scenario

Inspect income, protection and provenance

Start with a dated official illustration or bring the exact monthly estimate TSP produced for your option set.

Calculated in this browser. No input is transmitted or stored.

Purchase amount

Choose how much leaves TSP to purchase the irrevocable insurer contract.

From $3,500 through the current public-calculator ceiling of $1,000,000.

Used only to verify the purchase cap and show money retained in TSP.

Traditional and Roth sources

Optional: inspect the separate contracts TSP creates for positive Traditional and Roth amounts.

The two amounts must total the purchase. A source may be $0; each positive source contract must be at least $3,500.

Life and payment options

These fields must match the configuration used for any TSP estimate you enter.

Whole age from 25 through 85. The stored reference is age 65 only.

Life type
Payment pattern
Protection feature
Estimate source

The public interest rate is not enough to price a non-reference scenario.

How should this scenario be valued?
Stored reference: $100,000 at age 65, single life, level, no feature produced $697.51 monthly in July 2026. TSP's displayed rate was 4.95%.
Spouse and RMD checks

Explain procedural constraints without collecting consent or calculating a required minimum distribution.

Spousal notice or consent rules depend on marital status and retirement coverage.

This tool does not calculate the RMD. TSP must handle any required amount before the annuity purchase.

Review horizon

Choose how far the deterministic payment ledger extends and, optionally, add a today-dollar illustration.

Whole years from 1 through 50. This is not a life-expectancy forecast.

Shows future payments in today's dollars. It never changes nominal contract values.

Annuity results

Add an annuity scenario

Enter the purchase amount and participant details, or load the illustrative sample to review how the analysis works.

Method

Source the payment; inspect the consequences

The TSP and its annuity provider determine the starting payment. This workbench makes the downstream schedule, protection, and retained-balance arithmetic visible.

  1. 01

    Start from a result TSP can support

    Use the dated official reference only for its exact age-65, single-life, level, no-feature configuration. For every other choice, enter the monthly estimate from the official TSP calculator.

  2. 02

    Validate the contract structure

    Traditional and Roth purchases become separate contracts. Every positive source must meet the $3,500 minimum, and joint-life, survivor, and protection choices must be compatible.

  3. 03

    Project the selected payment pattern

    The workbench keeps level payments level or applies the regulation's fixed 2% annual increase, then totals rounded monthly payments across the selected horizon.

  4. 04

    Read protection and flexibility separately

    Survivor continuation, cash refund, ten-year-certain protection, retained TSP funds, and nominal break-even answer different questions. None is labeled a recommendation.

Precision boundary

One official estimate, several exact ledgers

An insurer quote and a payment analysis are different jobs. The first needs pricing factors the public sources do not expose; the second can be calculated transparently from the TSP estimate you enter.

ResultSource and meaning
Starting paymentDated reference or the official TSP scenario estimate you enter.
Payment scheduleExact level or fixed 2%-increase arithmetic from that start.
Protection ledgerSurvivor percentage, remaining cash refund, or months still certain.
Break-evenNominal payments versus purchase only—not life expectancy or advice.

Option dependencies

Choices change both income and protection

Joint life continues either 50% or 100% of the applicable payment to the survivor. A ten-year-certain feature belongs to single life, while cash refund can protect a remaining purchase amount under its contract terms.

Increasing payments rise by a fixed 2% each year. They are not an inflation index, a FERS COLA, or a forecast of purchasing power.

A nonspouse joint annuitant must be an eligible former spouse or person with an insurable interest. Additional age-difference rules can constrain a 100% continuation.

Before an annuity purchase

  • A married FERS or uniformed-services participant may need spouse consent for a nondefault form
  • A CSRS participant follows the applicable spouse-notice process
  • A required minimum distribution must be handled before the annuity purchase amount is finalized
  • The election generally cannot be changed after the contract is purchased

Scope & assumptions

Why BeyondGov does not invent insurer pricing

The public rate is one input to TSP annuity pricing, not a complete payout formula. Mortality assumptions, option factors, and exact rounding are not published in the current canonical sources.

Deterministic parts

  • Per-source $3,500 minimum and purchase/balance reconciliation
  • Level or fixed 2% annual payment schedule
  • 50% or 100% survivor continuation
  • Cash-refund and ten-year-certain remaining protection
  • Cumulative nominal payments, retained balance, and break-even

Not calculated here

  • A non-reference insurer quote or mortality forecast
  • Life expectancy, present value, or a recommended option
  • Taxes, withholding, basis, or a required minimum distribution
  • Installment withdrawals or returns on money retained in TSP
  • Consent, court orders, beneficiary accounts, or purchase processing

No shared data-platform feed is needed. One reviewed monthly reference is versioned with the tool, and every non-reference payment comes from the participant's own official TSP estimate. A data feed would not make unpublished insurer factors authoritative.

Questions

TSP annuity FAQ

Is a TSP life annuity the same as my FERS or CSRS pension?

No. A TSP life annuity is purchased from an outside insurer with money from your TSP account. A FERS or CSRS basic annuity is a separate federal pension benefit calculated under its own law and service rules.

Can this calculator reproduce an exact TSP annuity quote?

Only for the narrow dated reference vector shown on this page, which is scaled as an illustration. The insurer's complete pricing factors and mortality assumptions are not public. For any other age or option, enter the monthly estimate produced by the official TSP calculator for that exact scenario; BeyondGov then analyzes the payment pattern and protection terms.

Does the $3,500 minimum apply to my whole purchase?

It applies to each annuity contract. If you use only Traditional or only Roth money, that positive source must be at least $3,500. If you use both, the TSP purchases separate Traditional and Roth contracts, so each positive source amount must independently be at least $3,500.

How do increasing TSP annuity payments work?

The current rule describes a fixed 2% annual increase. It is not tied to actual inflation or the federal COLA. This tool applies 2% to the entered starting estimate once per modeled year and keeps the user-entered inflation illustration separate.

What is the difference between cash refund and ten-year certain?

Cash refund tracks the purchase amount not yet returned through payments and can pay a remaining amount to beneficiaries under the contract terms. Ten-year certain protects scheduled payments during the first 120 months, but it is available only with a single-life annuity. Neither feature is free: the official TSP estimate for that feature already reflects its pricing effect.

Can I change the annuity after the TSP purchases it?

Generally no. The election becomes irrevocable after the annuity contract is purchased. Review the official estimate, source allocation, joint annuitant, survivor percentage, and protection feature before submitting the TSP request.

Does this tool calculate RMDs or taxes on annuity payments?

No. If a required minimum distribution applies, use the post-RMD purchase amount supplied by the TSP. Tax treatment depends on the Traditional/Roth source and your facts; this page gives context but does not calculate withholding, taxable basis, or a return.

Will I need my spouse's consent?

A married FERS or uniformed-services participant making a total distribution generally needs spouse consent to choose something other than the regulatory default joint-spouse form. CSRS uses a spouse-notice process. The tool explains the modeled action but cannot collect consent, apply an exception, or adjudicate a court order.

Protect the transition runway

Lifetime income is one piece of the move.

See federal-experience-matched private roles while you decide how much of your TSP should remain flexible.

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