How Long Do You Have to Disclaim an Inheritance: 9-Month Rule

You have nine months from the date of the original owner’s death to disclaim an inheritance under federal tax law. That window is the deadline for filing what the Treasury regulations call a “qualified disclaimer,” and it applies whether the property comes to you through a will, a trust, a beneficiary designation, or intestacy.¹ Miss it, and any later attempt to pass the property along is treated as a taxable gift from you.

When the Nine-Month Clock Starts

The clock starts on the date of death. Not the date probate opens, not the date the executor tracks you down, not the date you learn you were named. If you find out about an inheritance seven months after the person died, you have two months left.

One exception matters. A beneficiary who was under 21 when the person died has until nine months after their twenty-first birthday to disclaim, not nine months after the death.¹ The federal age is 21, even in states where 18 is the age of majority for other purposes. Anything a custodian or guardian does with the property before the beneficiary turns 21 does not count as acceptance by the beneficiary.

What the Disclaimer Itself Must Do

Beating the deadline is only part of the job. To count as a qualified disclaimer, the document has to satisfy four separate conditions, and failing any one of them voids the whole thing.¹

It must be in writing, identify the specific property interest being refused, and be signed by you or your legal representative.
It must be irrevocable and unconditional. No hedging, no strings attached. Once delivered, the decision is permanent.
You cannot have accepted the property or any of its benefits before disclaiming.
You cannot direct where the property goes next. If you try to name the next recipient, the IRS treats it as if you accepted the asset and then made a gift.

What Counts as Accepting the Inheritance

The acceptance rule is where on-time disclaimers most often fall apart, because ordinary-looking actions can disqualify you. Under the regulations, acceptance means any affirmative act consistent with owning the property.² Things that count:

Collecting a single income payment. Receiving one dividend, interest check, or rent payment counts as acceptance of that interest. A regulatory example describes a trust beneficiary who received an income distribution in June and could not disclaim the income interest in August.
Directing action. Asking the executor to sell inherited property and hand you the proceeds is acceptance, even if the executor had no obligation to comply.
Pledging inherited property as collateral for a loan.
Taking anything of value in exchange for the disclaimer. That exchange itself is acceptance of the whole interest.

A few things do not count: merely receiving the deed or title document, having title vest in your name automatically under state law, or continuing to live in a jointly held residence before disclaiming your joint interest.² The safe course: do nothing with the property until you have decided. Even paying property taxes on an inherited house could sink the disclaimer.

How and Where to Deliver It

The written disclaimer goes to whoever manages and distributes the assets. For assets passing under a will, that is the executor or estate administrator. For trust assets, the trustee. For retirement accounts and life insurance, the plan administrator or insurance company.

Use a method that leaves a paper trail. Certified mail with return receipt gives you dated proof the disclaimer arrived before the nine months ran out, which is the evidence that matters if timing is later disputed.

Many states also require or encourage filing the disclaimer with the local probate or surrogate court. If real estate is involved, you may need to record the disclaimer with the county recorder as well, because an unrecorded disclaimer can create title problems later. State filing requirements vary, so checking your jurisdiction’s rules before you send anything is worth the effort.

Can You Disclaim Only Part of an Inheritance

Yes, within limits. Federal regulations allow a qualified disclaimer of a specific portion, so long as you disclaim all or an undivided fraction of a “separate interest” in the property.³ Each interest the decedent created separately is treated on its own. If someone leaves you a life income interest in a trust and a remainder interest, you can disclaim one and keep the other.

Severable property works the same way. Inherit 500 shares of stock, and you can accept 300 and disclaim 200.³ What the regulations do not allow is a time-limited slice, such as the income from a trust for a set number of years.

Disclaiming an Inherited IRA or 401(k)

Retirement accounts follow the same nine-month deadline and the same qualified-disclaimer rules. The written disclaimer goes to the IRA custodian or plan administrator rather than an executor. The common trap here is speed: even electing to take a distribution from the inherited account, before any money changes hands, counts as acceptance and kills the disclaimer. If you are considering a disclaimer, do not log into the account, do not name new beneficiaries on it, and do not request any distributions while you make up your mind.

A disclaimed retirement account passes to the remaining named beneficiaries on the account, not according to the will. Beneficiary designations operate outside probate, so the plan document controls where a disclaimed interest goes. If no contingent beneficiary is named, the plan’s default rules apply.

Missing the Nine-Month Deadline

If the nine months close without a valid disclaimer, you are treated as having accepted the inheritance. Any later attempt to pass the property to someone else is a gift from you, subject to federal gift tax rules. In 2026, the annual gift tax exclusion is $19,000 per recipient and the lifetime gift tax exemption is $15,000,000.⁴ Transferring a large inherited asset after the deadline can eat into that lifetime exemption or, for larger estates, generate an actual tax bill.

There is no extension process, no hardship exception, and no IRS procedure to request more time. Courts have consistently held that the nine-month deadline is jurisdictional for federal tax purposes. Some states have their own disclaimer statutes with different or longer deadlines, and a disclaimer that fails the federal test may still be valid under state law for non-tax purposes. But if the goal is avoiding gift tax consequences, a late disclaimer does not get you there.

A Warning If You Receive Means-Tested Benefits

Do not disclaim on the strength of the nine-month rule alone if you receive Medicaid, SSI, or other means-tested benefits. Medicaid applies a 60-month lookback to asset transfers, and a disclaimer can be treated as a transfer without fair value in return, triggering a penalty period during which Medicaid will not pay for nursing home care. SSI has similar exposure. A special needs trust funded with the inherited assets is often a better route that preserves both the benefits and the inheritance, but the analysis needs a lawyer before the disclaimer is signed.

The practical takeaway on timing: nine months sounds like a long window, but between the acceptance traps and the state filing steps, it disappears quickly. Talk to an estate attorney as soon as you learn about a potential inheritance, even before you decide whether to keep it.

1
eCFR. 26 CFR 25.2518-2 – Requirements for a Qualified Disclaimer
2
GovInfo. 26 CFR 25.2518-2 – Requirements for a Qualified Disclaimer
3
eCFR. 26 CFR 25.2518-3 – Disclaimer of Less Than an Entire Interest
4
Internal Revenue Service. Whats New – Estate and Gift Tax