Updated July 31, 2026. Quick answer: a qualified disclaimer must be complete within 9 months of the death (IRC §2518) — in writing, delivered to the executor or account custodian, before accepting any benefit from the asset. There are no extensions, and the second condition kills more disclaimers than the deadline does: cash the dividend check, take a distribution, move into the house — and the right to disclaim that asset is gone regardless of the calendar.
Why anyone would refuse an inheritance
Because a qualified disclaimer is the only tool that redirects money after a death with no gift-tax consequence. The disclaimed asset passes as if you had died first — to the contingent beneficiary, the next heir under the will, or down the intestacy line. The classic uses: a wealthy child routing an inheritance directly to their own children (skipping a second future estate tax on it); a surviving spouse disclaiming into a credit-shelter arrangement the will provided for; an heir with creditor problems letting the asset bypass them entirely (state creditor law varies on this — verify locally before relying on it).
The mechanics that trip people
Partial disclaimers are allowed — you can disclaim specific assets, or a fraction, and keep the rest. A minor’s clock runs from age 21, not from the death. You cannot direct where it goes — the asset follows the documents, so read where it lands BEFORE disclaiming; a disclaimer that routes money to the wrong person is irrevocable too. For retirement accounts the interaction with beneficiary rules has its own wrinkles: disclaiming an inherited IRA. See every other clock: the deadlines calculator.
Nine months to make a six-figure routing decision.
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