Updated August 6, 2026. Quick answer: the final quarter is not a planning window, it is an execution window. Two things go wrong in it more than anything else: a gap in health coverage, and a gap in income — the weeks between a last paycheque and a first retirement payment, which almost nobody budgets for because nobody tells them it exists.
Coverage first, always
Coverage is first because it is the only item on this list where a gap cannot be repaired retrospectively.
- Confirm the Medicare window against your actual last day — the window calculator. If you are already late, the cost is permanent rather than one-off.
- Decide the bridge if you finish before Medicare: COBRA or the marketplace. This has an election period, not an open door.
- Handle a covered spouse separately — your retirement can end their coverage on a date nobody discussed: the younger-spouse bridge.
The payment gap nobody budgets
Your last paycheque and your first pension or Social Security payment are not consecutive. Depending on the system, payroll cycle and processing time, the interval can run for weeks — and the first payment is often partial.
Plan cash for the gap as a specific number, not as a feeling. Confirm with your own plan and the Social Security Administration when the first payment is actually scheduled and what it will contain, then hold that many weeks of expenses in cash outside the portfolio. Selling investments to cover a known, dated, temporary gap is an avoidable cost, and it lands in the same weeks as everything else on this page.
The paperwork, in the order it becomes permanent
- The survivor election, which is typically irrevocable once payments begin. If this is being met for the first time now, slow down: the arithmetic, the FERS version.
- Any annuity purchase — the sharpest example being the TSP annuity, which cannot be changed or terminated once purchased, with a spousal waiver that is irrevocable once the record keeper has it.
- Withholding elections on pensions and distributions, which are adjustable later but expensive to ignore now: what to withhold.
- Beneficiary designations across every account, checked rather than assumed — they override a will, and this is the last quiet moment to look at them.
If Social Security has not been decided
Then decide it on the arithmetic rather than on the date the payroll stops: the claiming calculator, and the couple’s version. Note that applying takes time; the decision and the application are separate clocks.
The last-day details
- Which side of the new year the day falls on, if it is still movable: December or January.
- Unused leave, final bonuses and deferred payouts, which land in a tax year and can affect the income year that prices Medicare two years on: the lookback.
- Run your dates rather than the general shape of a quarter: the milestones and deadlines calculator.
Related
The full countdown in one printable page is here; the twelve-month version is here; and the seven irreversible mistakes is the page to read if your date moved up without your agreement, because pressure produces exactly those defaults.
A second opinion, if you want one
This quarter is where a check is worth most, and it is worth being specific about what you want checked: the coverage bridge, the survivor election, and the withholding. Not a portfolio review. What advice should cost before you commit to anything ongoing.
Talk to a fiduciary advisorSponsored advisor-matching link. We may earn compensation if you submit the third-party form. Compare fees, scope, conflicts, credentials, and fiduciary duty before hiring.
That is a sponsored link and it is marked as one. It is the only ask on this page.
Honest gap. The payment gap is described here as a thing to measure with your own plan and the Social Security Administration — we do not publish a typical length, because it varies by system, payroll cycle and processing and any number we gave would be wrong for most readers. Everything else here routes to pages carrying their own figures and sources. Public-sector and federal retirements run their own windows and forms. See methodology and corrections. General information, not financial advice.
Your last paycheque has a legal deadline and it is often sooner than people expect — what your state requires, and whether giving notice changes it.
If you are keeping any coverage, this is the window in which the option to convert employer or term coverage to a permanent policy usually has to be exercised — the conversion deadline expires quietly and without notice.