Every Montana resident deserves a will — but most people put it off because they assume it's expensive or complicated. In 2026, creating a legally valid will in Montana takes less than an hour and costs as little as $69 online, compared to $400–$900 for a traditional attorney. Here's everything you need to know about Montana's will requirements and the best online services for MT residents.
Montana requires your will to be signed by you and two adult witnesses who watch you sign and then sign themselves. Alternatively, Montana recognizes holographic wills — entirely handwritten and signed by you — which require no witnesses. Once signed, your will is legally valid in Montana and can be submitted to probate when the time comes. Read on for our top picks and a complete guide to Montana will law.
We evaluated each service on Montana legal compliance, ease of use, document completeness, and value. Here are our top three recommendations for Montana residents in 2026:
Montana will law governs what makes a will legally valid in the state. Understanding these requirements ensures your will won't be challenged or invalidated during probate. Here's a complete breakdown:
| Requirement | Montana Rule |
|---|---|
| Testator Age | 18 years or older (or legally emancipated minor) |
| Mental Capacity | Must be of "sound mind" — understand the nature of a will, your assets, and your heirs |
| Signature | Must be signed by the testator (you) at the end of the will |
| Witnesses Required | 2 competent adult witnesses who sign in your presence |
| Witness Restrictions | Witnesses should not be beneficiaries of the will (to avoid conflicts of interest) |
| Notarization | Not required, but a notarized "self-proving affidavit" simplifies probate |
| Holographic Wills | ✅ Recognized — entirely handwritten, signed, no witnesses needed |
Montana recognizes holographic wills — entirely handwritten and signed by the testator — without requiring witnesses.
Notarization: Not required, but Montana allows a 'self-proving affidavit' — signing before a notary makes probate easier by eliminating the need for witnesses to testify after death. The self-proving affidavit is signed at the same time as the will and is strongly recommended for Montana residents — it prevents the need for witnesses to appear in court after your death to verify the will's authenticity.
A properly executed Montana will can address all of the following:
Montana follows the Uniform Probate Code and has no state estate tax. Montana's vast land ownership and ranching culture make proper estate planning — especially for real property — particularly important. After your death, your executor files the will with the appropriate court. The probate process validates the will, pays debts and taxes, and oversees distribution of assets to your beneficiaries. Having a properly signed and witnessed will significantly streamlines this process.
Creating a will through an online service is a smart choice for most Montana residents — here's why:
A traditional estate planning attorney in Montana typically charges $400–$900 for a basic will package. Online services like Trust & Will start at $69 for a complete estate plan — a savings of $300 to $1,000 or more. The legal quality is comparable: online services use attorney-reviewed templates specifically designed for Montana requirements.
Online will makers guide you through every section with plain-English prompts. Most Montana residents complete their entire estate plan — will, healthcare directive, and power of attorney — in 45 to 60 minutes from home, without scheduling appointments or taking time off work.
Reputable services like Trust & Will and LegalZoom use document templates reviewed by licensed Montana attorneys. These templates automatically apply Montana's current legal requirements — witness rules, signature placement, and required language — so you don't need legal expertise to create a valid document.
Life changes — marriage, divorce, new children, major asset changes. Online will makers make it easy to update your documents. Trust & Will offers unlimited free updates; LegalZoom and LawDepot also provide update options. Review your will after any major life event to ensure it still reflects your wishes.
Online will makers are ideal for straightforward estates. Consider hiring a Montana estate planning attorney if you have:
Start your Montana-compliant will in under an hour. Attorney-reviewed templates, state-specific forms, and complete estate planning from $69.
Start Your Montana Will at Trust & Will →