Best Dates to Retire From Federal Service in 2027

A voluntary FERS annuity can't start in the middle of a month. Federal law says it begins on the first day of the month after separation (5 U.S.C. 8464), and OPM's retirement handbook adds that FERS has no exception for a short final month. In OPM's example, a March 3 separation still means an April 1 start. Any day between your last day of pay and that first of the month pays you nothing: no salary and no annuity. Involuntary retirements, disability retirements and retirements at the end of a fixed term follow a different rule. Those annuities start the day after separation. CSRS adds one more: a retiree in pay status for 3 or fewer days of the final month, weekends included, also starts the day after separation (OPM calls it the three-day rule).

You earn annual leave only for a complete two-week pay period. That's written into the statute itself (5 U.S.C. 6303): full-time employees earn 4 hours a pay period with under 3 years of service, 6 hours with 3 to 15 years, and 8 hours with 15 or more. Unused leave is paid out in your lump sum, so leaving before a pay period ends gives up that period's hours.

In my opinion, though, the month-end rule deserves more weight. A pay period's accrual tops out at about a day of leave. A mid-month exit can leave you weeks without income. When the two rules disagree, the month-end rule usually protects more money.

Two come close, and two more might. Every 2027 pay period ends on a Saturday, and none of them lands on the last day of a month. Your separation date doesn't have to be a workday. If you work Monday through Friday, your last day at work can be a Friday and your separation date the Saturday after it, when the pay period ends. Confirm it with HR.

• Saturday, October 30 is the closest match. It ends a pay period, and the only day left before a November 1 annuity is Sunday, October 31. Work through Friday, October 29, separate on Saturday, October 30, and you lose no pay.
• Saturday, May 29 is the runner-up. It ends a pay period, and the only days left before a June 1 annuity are Sunday, May 30 and Memorial Day, Monday, May 31. Separating on May 29 costs you one holiday's pay. Unused leave doesn't change that: your lump sum pays May 31 but counts it against your leave (5 CFR 550.1204).
• Friday, April 30 and Friday, December 31 each end a month one day before a pay period ends. December 31 is also a holiday, because New Year's Day 2028 falls on a Saturday (OPM's 2028 holiday list). Whether a Friday separation earns that pay period's leave isn't settled: the rule says only "full biweekly pay period" (5 CFR 630.202), and agencies differ, so ask payroll.
• Three other months end on a weekend: Sunday, January 31; Sunday, February 28; and Saturday, July 31. In each case, the last pay period ends a week or more earlier (January 23, February 20 and July 24).
• In the other five months, the last day of the month falls in the middle of a pay period.

January 9, 2027 has real merits. It's the last day of the 2026 leave year and the end of a pay period, so it collects that period's accrual (10 hours instead of 6 if you have 3 to 15 years of service). Leave above the carryover ceiling (30 days for most employees in the U.S.) is forfeited if it isn't used by the end of the leave year. If you separate before that happens, though, OPM's lump-sum fact sheet says the excess is paid out in your lump sum.

The catch is the annuity. A January 9 separation starts the annuity on February 1, so about three weeks pass with neither a paycheck nor an annuity. The lump sum softens that gap. January 9 suits people with large leave balances, and the last day of a month suits almost everyone else. If you'd rather use the leave than cash it out, OPM lists November 28, 2026 as the last day to schedule use-or-lose leave.

It removes the usual reason to retire around New Year's. Your agency figures the lump sum as if you had stayed on the job and used up your leave. If a general pay raise takes effect during that stretch, the payout includes it. In a normal year, that lets someone who retires in late December or early January collect part of the payout at the new January rate. On August 26, 2026, however, the President issued an alternative pay plan that freezes 2027 General Schedule base and locality rates at 2026 levels. Unless Congress steps in, a General Schedule lump sum paid in January 2027 has no across-the-board raise to pick up. Law enforcement personnel are the exception: their planned special-rate increase does count toward the lump sum.

The freeze also slows the growth of your High-3 (your highest three consecutive years of basic pay), which in 2027 can rise only through step increases and promotions. Our post on what changes for federal retirees in 2027 covers that side of it.

The later in the year you retire, the smaller your first cost-of-living adjustment (COLA). OPM prorates it, paying one-twelfth of the increase for each month you received an annuity. Most FERS retirees under 62 get no COLA on their annuity at all (disability, survivor and special-provision retirees are the exceptions). So this mainly affects CSRS retirees and FERS retirees who are already 62. For them, an autumn 2027 retirement brings only a small share of the COLA that takes effect December 1, 2027 (first paid in January 2028).

I hope this illustrates why the best date is a set of trade-offs rather than one magic day. The month-end rule carries the most weight, and your leave balance and the pay period calendar decide the rest. Our lessons on timing your retirement date and the lump-sum annual leave payout walk through each rule in more depth. Pencil in a date. Check it against your agency's payroll calendar, and ask HR about holidays before you sign anything.