Inheritance Disclaimer and Renunciation Requirements in Idaho
At a glance
| Governing law and covered interests | Idaho Code § 15-2-801; covers heirs, devisees, successors to renounced interests, will/trust and other testamentary or nontestamentary beneficiaries, powers and future interests, joint interests, insurance interests, grantees, and other benefit recipients |
|---|---|
| Whole, partial, and conditional disclaimer | Whole or partial, including powers, future interests, specific parts, fractional shares, or assets; statute does not expressly authorize a conditional renunciation (§ 15-2-801(1)(a)) |
| Writing or record and required contents | Written instrument describing the property or interest, signed by the person renouncing, and declaring the renunciation and its extent (§ 15-2-801(1)(a)-(b)) |
| Signature, witnesses, acknowledgment, and notary | Disclaimant's signature only; no witness, acknowledgment, oath, or notarization stated (§ 15-2-801(1)(b)) |
| State deadline, irrevocability, and federal-tax overlay | File within 9 months after the later of transfer or death of the decedent/power-holder; if taker not finally ascertained, 9 months after ascertainment or indefeasible vesting. Renunciation is binding; federal age-21 and acceptance rules remain separate (§ 15-2-801(2), (6); 26 U.S.C. § 2518) |
| Delivery, filing, and recipient | File in the court of the county where estate proceedings are or would be pending; deliver a copy in person or by registered/certified mail to the personal representative and applicable trustee (§ 15-2-801(2)) |
| Real-property recording and notice | Optional: a copy may be recorded with the recorder in the county where the real estate lies; recording is not stated as a validity condition (§ 15-2-801(2)) |
| Acceptance, transfer, insolvency, and creditor bars | Express bars: prior assignment, conveyance, encumbrance, pledge, transfer or contract; written waiver; or judicial sale/disposition before effectiveness. No express Idaho acceptance, insolvency, or general creditor bar; federal tax acceptance rule is separate (§ 15-2-801(4)) |
| Effective date and destination | Contrary governing-instrument direction controls; otherwise disclaimant is treated as predeceasing the decedent or power-holder, future interests follow the same rule, and renunciation relates back to death. Renunciation and waiver bind the actor and claimants through them (§ 15-2-801(3), (6)) |
Requirements one by one
Governing law and covered interests
Idaho Code § 15-2-801 calls the procedure a "renunciation." It reaches heirs, devisees, successors to another renounced interest, beneficiaries under testamentary and nontestamentary instruments, powers of appointment, grantees, surviving joint owners and joint tenants, insurance beneficiaries, and other recipients of benefits under testamentary or nontestamentary instruments. Powers and future interests are expressly within the provision.
Whole and partial renunciation
Section 15-2-801(1)(a) allows a renunciation "in whole or in part" and specifically names powers, future interests, specific parts, fractional shares, and assets. It does not separately authorize a conditional renunciation or prescribe fraction, percentage, formula, or dollar-amount language beyond that broad partial-interest authority.
Writing and required contents
The renunciation must be a written instrument. Under § 15-2-801(1)(b), it must describe the property or interest, be signed by the person renouncing, and declare the renunciation and its extent. The subsection does not require an affidavit, tax recital, legal description, or original-document statement.
Signature and other execution formalities
Idaho's operative formalities provision requires the disclaimant's signature. It does not state a witness, acknowledgment, oath, or notarization requirement. Those added formalities should not be confused with the separate option to record a real-property copy.
State deadline, binding effect, and federal tax
Idaho imposes a fixed state filing deadline. Section 15-2-801(2) requires filing within nine months after the later of the transfer or the death of the decedent or donee of the power. If the taker is not yet finally ascertained, the alternate deadline is nine months after the event that finally identifies the taker or makes the interest indefeasibly vested. Subsection (9)'s September 19, 2011 floor applies only to deaths in a stated 2009–2010 historical window. Under subsection (6), a renunciation binds the person renouncing and everyone claiming through or under that person.
The federal clock is similar but not identical. 26 U.S.C. § 2518(b) uses nine months after the later of the transfer or the disclaimant reaching age 21 and separately requires no prior acceptance and passage without the disclaimant's direction. Idaho's state deadline does not substitute for those federal tax conditions.
Court filing and delivery
File the writing in the court of the county where the decedent's estate proceeding is pending or would be pending if opened. A copy must also be delivered in person or sent by registered or certified mail to the personal representative and, when the interest is in a trust, the trustee. The protection for otherwise proper distributions turns on actual notice, so filing alone should not be treated as a substitute for the required copy delivery.
Real-property recording
Recording is optional under § 15-2-801(2): a copy "may also be recorded" in the county recorder's office where the real estate lies. The statute does not make recording a condition of the renunciation's validity and does not state a separate purchaser, lienholder, or constructive-notice consequence.
Transfer, waiver, and judicial-process bars
Section 15-2-801(4) bars the right after an assignment, conveyance, encumbrance, pledge, transfer, or contract for one; a written waiver; or a judicial sale or other judicial disposition before the renunciation becomes effective. Acceptance is not in that Idaho list. It remains important for federal tax qualification under 26 U.S.C. § 2518, but it should not be relabeled as an express Idaho statutory bar. Idaho's section also states no insolvency or general creditor-claim bar, and subsection (5) preserves the right despite a spendthrift provision or similar restriction.
Effective date and destination
A contrary instruction from the decedent or donee of the power controls first. Otherwise § 15-2-801(3) treats the person renouncing as having predeceased the decedent or power-holder. A later future interest takes effect under the same deemed-predecease rule, and the renunciation relates back for all purposes to the relevant death. Those rules determine the next taker; the statute does not give the disclaimant a destination choice.
What trips people up
Idaho's nine-month clock and the federal nine-month clock do not use the same second event. Idaho generally compares transfer with the relevant death, while federal law compares transfer with the disclaimant reaching age 21. A document can therefore need two separate timing calculations.
Recording is not the same as delivery. Even when a real-property copy is recorded, § 15-2-801(2) separately requires in-person or registered/certified-mail delivery to the applicable fiduciary recipients.
Common questions
Does a spendthrift clause prevent renunciation? No. Section 15-2-801(5) says the right exists despite a spendthrift provision or similar restriction.
Can the personal representative distribute without liability before receiving the renunciation? The statute protects an otherwise proper distribution made without actual notice. That is another reason to complete the required copy delivery rather than relying only on the court file.
Statutes and sources
- Idaho Code § 15-2-801(1) — covered interests, whole and partial renunciation, writing, required contents, and signature. https://legislature.idaho.gov/statutesrules/idstat/title15/t15ch2/sect15-2-801/ (accessed 2026-08-01)
- Idaho Code § 15-2-801(2), (9) — state deadline, unascertained-interest clock, historical exception, court filing, delivery, optional realty recording, and actual- notice protection. https://legislature.idaho.gov/statutesrules/idstat/title15/t15ch2/sect15-2-801/ (accessed 2026-08-01)
- Idaho Code § 15-2-801(3) — governing-instrument priority, deemed predecease, future interests, and relation back. https://legislature.idaho.gov/statutesrules/idstat/title15/t15ch2/sect15-2-801/ (accessed 2026-08-01)
- Idaho Code § 15-2-801(4)-(6) — transfer, waiver, and judicial-process bars; spendthrift rule; and binding effect. https://legislature.idaho.gov/statutesrules/idstat/title15/t15ch2/sect15-2-801/ (accessed 2026-08-01)
- 26 U.S.C. § 2518(b) — separate federal qualified-disclaimer requirements. https://www.govinfo.gov/content/pkg/USCODE-2024-title26/html/USCODE-2024-title26-subtitleB-chap12-subchapB-sec2518.htm (accessed 2026-08-01)
Source links
Every statute quoted above, linked, with the date we checked it.
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