Idaho charges no state estate tax and no inheritance tax, so most residents only need to think about the federal estate tax, which applies above $15 million per person in 2026. Idaho is also a community property state, which changes how assets are owned and inherited between spouses.
A solid Idaho estate plan usually includes a will, a durable power of attorney, and health care directives, with a trust added if you want to avoid probate or manage assets for a minor. FastWill's online will builder covers Idaho's witness requirements and can help you think through the community property rules that apply to married couples.
Does Idaho Have an Estate Tax or Inheritance Tax
No. Idaho has no state estate tax and no inheritance tax, which is good news for heirs, though the federal estate tax can still apply to estates above $15 million per person in 2026. For most Idaho families, that means no estate tax planning is necessary at all, though business owners and those with significant out-of-state property should confirm their total estate value with a professional.
How to Make a Valid Will in Idaho
Under Idaho Code 15-2-502, a will must be in writing, signed by the testator, and signed by at least two witnesses, each of whom witnessed either the signing or the testator's acknowledgment of the signature or the will. Anyone 18 or older who is generally competent may serve as a witness, and Idaho does not invalidate a will simply because a witness is also a beneficiary. Idaho also recognizes holographic wills: if the signature and material provisions are in your own handwriting, the document can be valid without any witnesses at all.
- Be 18 or older and of sound mind
- Sign the will yourself, or direct someone else to sign in your presence
- Have two competent witnesses sign after watching you sign or acknowledge the will
- Name an executor (called a personal representative in Idaho) and a guardian for minor children
What Happens if You Die Without a Will in Idaho
Idaho's community property rules mean that most assets acquired during a marriage belong equally to both spouses, which shapes how intestacy works when someone dies without a will. Idaho also offers both formal and informal probate depending on the complexity of the estate, and while Idaho has no inheritance tax, federal estate tax can still apply to very large estates. Without a will, unmarried partners and friends receive nothing under Idaho intestacy law, no matter the length of the relationship.
Trusts and Probate in Idaho
Idaho probate can move relatively quickly for straightforward, uncontested estates, especially compared to states with more complex court systems. Still, a revocable living trust has value for Idaho residents who own property in more than one state, want to keep the plan private, or want to avoid probate for a blended family. Because Idaho is a community property state, married couples should also think carefully about how they title assets, since that affects both taxes during life and what happens at death.
For a simpler estate, a will alone paired with updated beneficiary designations often does the job. Our guide to the difference between a will and a trust covers the tradeoffs in more detail.
Powers of Attorney and Health Care Decisions
A financial power of attorney lets a trusted agent pay bills, manage investments, and handle real estate matters if you become incapacitated. A living will records your preferences for end-of-life care, and a health care power of attorney names someone to make medical decisions on your behalf if you cannot. Idaho also recognizes a HIPAA release form, which lets your health care providers share medical information with the people you choose.
If you have moved to or from Idaho, review our guide on updating your will, trust, and power of attorney after a move, since community property rules and witness requirements differ across states.
Digital Assets and Personal Property in Idaho
An Idaho estate plan should also cover digital assets, such as online banking, cryptocurrency, and social media or email accounts. Idaho has adopted a version of the Revised Uniform Fiduciary Access to Digital Assets Act, which gives your personal representative a legal path to access certain digital accounts when your will or a platform's own tools grant that authority. Keep a secure, separate list of these accounts and how you want them handled, since the will becomes a public record once filed with the court.
Frequently Asked Questions
Is Idaho a community property state
Yes. Most assets acquired during a marriage in Idaho belong equally to both spouses, which affects both estate planning and what happens under intestacy.
Does Idaho have an inheritance tax
No. Idaho has no state inheritance tax and no state estate tax.
Are handwritten wills valid in Idaho
Yes. A holographic will is valid in Idaho without witnesses if the signature and material provisions are in the testator's own handwriting.
Can a beneficiary witness my Idaho will
Idaho does not automatically invalidate a will because a witness is also a beneficiary, but it is safer to use disinterested witnesses to avoid any question later.
How long does Idaho probate take
An uncontested, informal Idaho probate can often resolve in a few months, while formal or contested probate takes longer.
Idaho's community property rules make it worth getting professional input on how you title assets, even though the state itself charges no estate or inheritance tax. See FastWill's plans and pricing to get started.
