The Best Dates to Retire From Federal Service in 2027

Updated October 2026 · Educational only — not financial, tax, or legal advice

Every fall someone publishes a list naming the single best day to retire next year. There isn't one. There is a best date for your leave balance, your pay, your sick leave remainder, your tax picture, and — if you're in special provisions — your mandatory separation date. What does change from year to year is the calendar those factors run on. For 2027, three things are different, and one of them removes the most common argument for "work into January."

What's different about 2027

• A proposed pay freeze. On August 26, 2026 the President sent Congress an alternative pay plan freezing 2027 General Schedule base and locality rates at 2026 levels. This is a proposal, not the final word — Congress can still set a different raise in appropriations, and final 2027 pay tables are normally issued in December.
• A 3.8% increase for law enforcement. The same plan directs OPM to use special-rate authority to raise 2027 pay for law enforcement personnel by 3.8%, with a tentative effective date of January 10, 2027. OPM says coverage will be broader than the 2026 special rates, but which agencies and occupations qualify won't be known until OPM issues the 2027 tables later this year.
• New leave-year dates. The 2026 leave year ends Saturday, January 9, 2027. The 2027 leave year runs January 10, 2027 through Saturday, January 8, 2028.

The 2027 dates that matter

Rule 1: Your FERS annuity starts the month after you separate

For a FERS retiree, the annuity begins on the first day of the month after you retire. Retire March 31, 2027 and your annuity begins April 1. Retire March 3 and it still begins April 1 — you gave up four weeks of salary and gained nothing. That's why month-end dates dominate. Here is how each month-end falls in 2027:

Four 2027 month-ends land on a weekend. Ask your HR office how they process a weekend separation date before you put one on your retirement application.

Rule 2: The leave-year end decides what happens to hours above 240

Unused annual leave is paid as a lump sum when you retire. Most employees can carry at most 240 hours into a new leave year; anything above that is forfeited when the leave year ends. Forfeited leave can be restored only in narrow cases — generally it must have been scheduled in writing by the deadline and then cancelled because of an exigency or sickness. So the leave-year end is a hard line:

• Retire on or before the leave-year end and your whole balance — carryover plus everything accrued that year — is paid out.
• Retire after it and anything above your ceiling is gone; you start the new year from 240 hours (plus whatever you accrue).

For someone retiring around the turn of 2027, that makes January 9, 2027 the date to compare against January 31, 2027. Both start your annuity on February 1. January 31 adds three weeks of salary; January 9 preserves every hour above 240. Which wins depends on how many excess hours you're holding. The same comparison a year later is December 31, 2027 vs. January 8, 2028.

Rule 3: In 2027, "wait for the January raise" may not apply

The standard argument for working into January has two parts: a raise lifts your high-3 for life, and your lump sum is projected forward as if you'd used the leave — so hours that fall after a raise are paid at the new rate. OPM requires agencies to adjust the lump sum for statutory or general pay increases that take effect during that projected period.

If the proposed freeze holds, both parts mostly disappear for General Schedule employees in 2027. There's no new January rate for the lump sum to reach, and no raise to pull into your high-3. That doesn't mean leave early — but it does mean a GS employee should compare dates on leave, sick leave, and taxes rather than assume January pays more. Watch for Congress to change the number before the December pay tables.

Rule 4: Law enforcement may be the exception

If you're covered by the 2027 law enforcement special rates, the January logic comes back. OPM states that special rates are basic pay for most purposes, including retirement — so every month you work at the higher rate replaces a lower-paid month in your high-3 window, and that difference is paid for the rest of your life.

Two open questions to settle before you pick a date:

• Are you covered? OPM hasn't published the agency and occupational coverage yet. Don't plan around 3.8% until your position appears in the 2027 tables.
• Does it reach your lump sum? If you separate on January 9, 2027, your projected leave period runs past January 10. Whether your payroll office prices those hours at the new special rate is a question to ask once the tables are out — get the answer in writing.

Rule 5: December vs. January is partly a tax question

Retire at the end of December and your lump sum is typically paid in January — counted in your first retirement year, when income is often lower. Retire in January and you add salary to that year instead. Neither is universally better; it depends on your bracket in each year and what else lands in it, such as a TSP withdrawal. This is a comparison to run with real numbers.

Rule 6: Sick leave rounding can quietly eat days of credit

Unused sick leave converts to additional service for the annuity computation (never for eligibility), using OPM's chart based on a 2,087-hour work year. After it's added to your actual service, any leftover time less than a full month is dropped. If your combined total comes to 29 years, 11 months, and 25 days, you're credited 29 years 11 months. Moving your date by days or weeks can push the total across a month boundary and reclaim that credit. It's small money per month, paid for life.

Special provisions: your mandatory date is a ceiling, not a target

Law enforcement officers, firefighters, nuclear materials couriers, and CBP officers who are eligible for immediate retirement are separated on the last day of the month in which they reach age 57 — or complete 20 years of covered service, if that comes later. Air traffic controllers face the same rule at 56. If you were born in 1970 (or 1971 as a controller) and have your 20 years, your mandatory date falls in 2027.

That date caps your window; it doesn't make it the best date. Compare it with earlier month-ends — especially if your mandatory month is December or January and the leave-year end falls on the wrong side of it, or if the 3.8% special rates would raise your high-3 in the months before you go. See mandatory retirement age for the extension rules.

How the pieces interact: four example profiles

The takeaway

For 2027 the calendar is set and the pay picture isn't — yet. If you're GS and the freeze holds, January loses its usual advantage, and the decision comes down to excess leave, sick-leave rounding, and taxes. If you're law enforcement and covered by the special rates, working past January 10 may be worth more than it has been in years. Either way, the answer comes from putting two or three specific dates side by side, not from someone else's favorite day.