COLA Adjustments on Former Spouse Annuity Share

One of the most common questions former spouses ask after their annuity share starts paying out: does my monthly payment increase with inflation, or am I locked into the amount OPM calculated at retirement?

The answer depends entirely on how your COAP is worded — and the difference compounds significantly over a 20- or 30-year retirement.

The Default Rule: Former Spouses Get COLA

Under 5 CFR §§ 838.241 and 838.622, unless the court order directly and unequivocally orders otherwise, OPM adjusts a percentage or fraction of the employee's annuity for COLAs at the same time and percentage rate as the retiree's annuity.

For 2026, the COLA rates are:

• CSRS annuities: 2.8% increase
• FERS annuities: 2.0% increase (FERS receives the full CPI-W increase when it is 2% or less, 2% when it is more than 2% but no more than 3%, and the CPI-W increase minus 1 percentage point when it is more than 3%, with a floor of 0%)

If your court order awards you 30% of the gross annuity and the retiree receives a COLA, your 30% share is recalculated on the new, higher annuity. Both the retiree and you benefit from the adjustment proportionally.

When You Don't Get COLA

A court order can set the former spouse's share at a fixed dollar amount. Unless the order expressly directs OPM to apply COLAs to that amount, OPM pays exactly $1,500 every month regardless of COLA increases. The retiree keeps all future COLA growth.

This is one of the most consequential drafting decisions in a federal divorce. At a 2% annual COLA, a $1,500 monthly payment stays flat while the retiree's annuity grows from $5,000 to over $7,400 over 20 years. Your purchasing power erodes by roughly a third.

If you are still in the divorce process and your attorney proposes a fixed dollar amount, ask them to explain the long-term impact. A percentage share protects your purchasing power for the life of the annuity.

The Prospective vs. Retroactive COLA Question

OPM adjusts a former spouse's share at the same time and percentage rate as the retiree's COLA. If OPM later pays arrears for months after a COLA took effect, those months reflect the adjustment.

CSRS vs. FERS: The COLA Gap Matters

Over a long retirement, the gap between CSRS and FERS COLAs compounds dramatically. CSRS retirees receive the full Consumer Price Index (CPI-W) increase. FERS retirees receive the full CPI-W increase when it is 2% or less, 2% when it is more than 2% but no more than 3%, and CPI-W minus 1 percentage point when it is more than 3%.

This isn't something you can change after the divorce — it's built into the retirement system. But understanding it helps you plan your overall retirement income strategy.

Verifying Your COLA Was Applied

Compare your January payment with the prior month's amount. The increase should equal the announced COLA rate applied to your pre-COLA payment.

If your payment didn't change and your court order awards a percentage (not a fixed dollar amount), contact OPM's Court Ordered Benefits Branch at 1-888-767-6738. Occasionally, a COLA fails to apply to the former spouse's record due to administrative processing errors.

The Former Spouse Federal Benefits Guide includes a COLA projection worksheet that lets you estimate your annuity share's growth over 10, 20, and 30 years under both CSRS and FERS scenarios.

See more United States guides →