A federal retirement COLA announcement is a starting point for reading your annuity notice, not a prediction of the next bank deposit. Your retirement system, any separate component, first adjustment and deductions can affect the comparison. Review the notice in that order.
Which adjustment rules apply?
CSRS and FERS do not have the same age rules. The CSRS statute ties adjustment eligibility to the annuity's commencing date and specifies first-adjustment proration; it does not impose the ordinary FERS age-62 condition. OPM's system-specific explanation distinguishes CSRS adjustment eligibility at all ages from ordinary FERS adjustment eligibility beginning at 62. Disability, survivor and specified special-retirement cases need their own treatment.
The ordinary FERS formula follows a CPI increase up to 2%; above 2% through 3%, the adjustment is 2%; above 3%, it is the increase minus one percentage point. A pension containing a CSRS component needs component-specific review. Do not apply one percentage to every payment associated with retirement.
Read the notice instead of projecting a headline
OPM's COLA support page explains the December adjustment and following January payment timing, and that an initial adjustment may be prorated. Its current-year announcement can change. Use the dated notice and current official figures rather than a percentage copied from an older article.
| Notice line | What to compare | If it does not reconcile |
|---|---|---|
| System and component | FERS, CSRS, or mixed computation | Ask which portion received which treatment |
| Commencing date | Date used for first adjustment | Ask for the proration explanation |
| Old and new gross annuity | Same benefit before deductions | Separate the adjustment from other corrections |
| Deductions | Each premium, withholding or other line | Identify changes independently of the COLA |
| Net payment | Old and new deposits | Reconcile from gross amounts rather than guessing |
| Explanation date | Notice and any later correction | Keep both versions and identify the current one |
Make a household comparison that remains useful
On a separate budget sheet, list the actual recurring expense changes you need to plan for. A household's expenses do not necessarily move by the same percentage as an inflation index. Leave future payment amounts unconfirmed until the relevant notice arrives.
If the pension increased but the deposit moved less, compare deductions first. If the gross figure itself differs from your expectation, ask OPM which component, effective date or adjustment rule explains it. Keep the question focused on the line that does not reconcile.
Use the annuity tax-record check when a tax statement raises a separate issue. Keep claim numbers and notices in your own records; this worksheet neither calculates an official COLA nor authorizes a change to your annuity.
Why did my deposit rise less than my pension?
Compare gross and net separately. In an invented example, the old gross payment is $3,000 and deductions total $400, leaving $2,600. The new gross payment is $3,060 and deductions total $445, leaving $2,615. Gross increased by $60; the deposit increased by $15 because listed deductions also increased by $45. These are illustrative amounts, not an announced COLA or a predicted premium change.
The payment reconciliation worksheet checks one period at a time. Run the old and new statements separately, then compare the deduction lines. A matching net calculation confirms arithmetic, not whether the underlying adjustment or deduction was correct.
Does the headline percentage apply to every federal benefit?
Identify each payment's system and component first. A CSRS component, an ordinary FERS annuity and a separate Social Security benefit should not be collapsed into one household percentage. Check the source notice for each payment, including any first-adjustment or special-provision explanation.
Can I use last year's adjustment in next year's budget?
You can label a planning assumption, but keep it separate from a confirmed future payment. A household expense estimate also needs its own support: an insurance renewal, utility history or bill may change differently from a general inflation measure. Record the date when the income assumption was replaced with an actual notice.
Which question goes to OPM?
Point to the exact line: the gross adjustment, the component receiving it, the commencing date or a deduction. “Why is the deposit different?” becomes easier to answer when the unexplained amount and the two matching periods are already identified.
Browse federal benefits, retirement and insurance topics or read how we prepare and check our guides.
Sources
- OPM: Retirement cost-of-living adjustments, checked November 4, 2026
- 5 USC 8340: Cost-of-living adjustment of annuities, checked November 4, 2026
- OPM: FERS election options, COLA sections, checked November 4, 2026
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