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Retire on paper, keep the salary, bank the pension — but the pension freezes. Run the trade.
A Deferred Retirement Option Plan is the public-pension system's most misunderstood feature: you formally "retire" while continuing to work at full salary, and your monthly pension payments accumulate in a DROP account earning plan interest — typically 3–5% — for up to three to five years. Exit, and you collect the lump sum plus the pension. The catch is the freeze: pension accrual stops the day you enter, so extra years and late-career raises don't count. A $80,000-salary employee with 25 years at 2.5% faces the choice exactly: $216,498 lump plus a frozen $50,000 pension, or four more working years for a $65,280 pension forever. The lump covers the gap for about 14 years. This calculator prices your trade with your system's real numbers.
Police and firefighters use it at DROP eligibility: the lump sum (pension payments banked at plan interest) against the frozen accrual — 14 years of gap coverage on the typical case, plus the direct-rollover move that dodges the 20% withholding trap.
Three situations. (1) You have a use for the lump: wiping out a mortgage or debt at retirement changes your fixed-cost picture more than a few hundred dollars a month of pension. (2) You want rollover flexibility — a direct rollover to an IRA or 457(b) gives you investment control and Roth-conversion options a pension never will. (3) Your plan's COLA is weak: a frozen nominal pension loses 2–3% of purchasing power per year, while the lump invested can keep pace. DROP loses when longevity runs in your family, the pension has a real COLA, and you'd otherwise keep working the same years anyway — the higher forever-pension compounds for decades.
Fully, as ordinary income — unless you roll it over. The trap: if the plan cuts the check to YOU, 20% federal withholding is mandatory, and you have 60 days to complete a rollover (coming up with the withheld 20% from other money) or the unrolled portion is taxable now, plus a 10% penalty if you're under 59½. The clean path is a DIRECT rollover — plan-to-IRA trustee transfer — no withholding, no deadline. Note the public-safety exception: 457(b) governmental plans allow penalty-free access at separation regardless of age, which is why many firefighters roll DROP money into their 457.
Entry is irrevocable in most systems — verify everything first. The maximum DROP window (3–5 years; entering later than your first eligibility date is usually optimal since every pre-entry year accrues normally). The credited interest rate: guaranteed 4–5% is a different product than market-linked. Whether employee contributions continue during DROP (some plans require them with no extra accrual — pure cost). Whether your beneficiary election locks at entry. And whether a partial lump-sum option (PLOP) exists as an alternative. Get the official estimate in writing; plan documents control, not the HR summary.