Survivor Benefit Calculator: How to Use It

What this calculator does

The Survivor Benefit Calculator models the full survivor annuity election, the partial election, and no election side by side. For each option, it shows your reduced monthly pension during your lifetime, the monthly benefit your spouse would receive if you die first, and a lifetime value comparison that accounts for both your lifespan and your spouse's expected lifespan.

The calculator also shows the break-even: how long your spouse must outlive you for the survivor benefit to pay out more in total than the cumulative cost of the reduced pension during your lifetime.

What each input means

Gross pension before survivor election

Your FERS or CSRS pension amount before any survivor benefit reduction. This is the number OPM uses as the base. Find it in your retirement estimate from OPM or your agency HR. The full FERS survivor benefit election costs 10% of this figure. A $4,000/month pension becomes $3,600/month. The partial election costs 5% and provides a 25% survivor benefit.

Your age and spouse's age

The ages determine life expectancy assumptions in the break-even calculation. A large age gap between you and your spouse changes the analysis significantly. If your spouse is 15 years younger, they have a much longer expected survivorship period, which increases the value of the survivor benefit election. If your spouse is the same age and in poor health, the analysis shifts the other direction.

Pension type: FERS or CSRS

FERS and CSRS have different survivor benefit structures. FERS offers a full election (10% of gross, provides 50% survivor benefit) or a partial election (5% of gross, provides 25% survivor benefit). CSRS allows a sliding scale where you can elect any dollar amount of survivor benefit up to 55% of your unreduced annuity, with a cost formula based on the elected amount. The calculator applies the correct cost formula based on your plan.

The FEHB connection

This is the piece most people miss. Federal Employees Health Benefits coverage in retirement continues only as long as you or your covered family member is receiving a FERS or CSRS annuity. If you elect no survivor benefit and your spouse has been covered under your FEHB enrollment, your spouse loses FEHB eligibility when you die. They'd need to find coverage elsewhere, typically Medicare plus a supplement or marketplace insurance. At retirement ages, that can cost $1,000 to $2,000 per month or more. The survivor benefit election often looks different when you factor in FEHB continuation.

The break-even calculation

The full FERS election costs 10% of your pension for as long as you live. On a $3,000/month pension, that's $300/month or $3,600/year. If your spouse outlives you, they receive $1,500/month (50% of the unreduced annuity). The break-even is roughly how many years your spouse must outlive you to recover the cumulative cost of the reduced pension.

At $300/month cost and $1,500/month benefit to the surviving spouse, the break-even is about 2.4 months of survivorship to recover each year of reduced pension. For most couples with average life expectancy differences, the survivor benefit is a reasonable insurance purchase. For couples with significant health differences or no dependence on the pension income, the math can go the other way.

What the election doesn't cover

The survivor annuity only covers your FERS or CSRS pension. It doesn't cover your TSP, Social Security, or any other assets. Those pass to your spouse through beneficiary designations and estate planning. Don't confuse the survivor annuity election with a comprehensive income protection plan for your spouse. It's one piece.