Updating Your Will and Estate Plan After Divorce in Montana: 2026 Complete Guide

Montana divorce triggers automatic revocation of estate plan provisions naming your former spouse under Montana Code § 72-2-814. This statute revokes will bequests, trust distributions, beneficiary designations, and fiduciary appointments to your ex-spouse without requiring any affirmative action on your part. However, automatic revocation does not apply to ERISA-governed retirement accounts such as 401(k) plans and employer group life insurance, which require manual beneficiary changes within 30-90 days of your final decree. Estate planning after divorce Montana requires reviewing 6-8 core documents: your will, revocable living trust, power of attorney, healthcare directive, retirement account beneficiaries, life insurance policies, bank account payable-on-death designations, and real property deeds. The cost to update these documents ranges from $300 for a simple will revision to $3,000+ for comprehensive estate plan overhauls with an experienced Montana estate planning attorney.

Key Facts: Montana Estate Planning After Divorce

How Montana Law Automatically Revokes Estate Plan Provisions Upon Divorce

Montana Code § 72-2-814 automatically revokes any revocable disposition or appointment of property to your former spouse in governing instruments executed before divorce, including wills, revocable trusts, life insurance policies, annuity contracts, and IRA beneficiary designations. This automatic revocation takes effect immediately upon entry of your final divorce decree, treating your ex-spouse as if they predeceased you or disclaimed the inheritance. The statute also revokes provisions benefiting relatives of your former spouse who are no longer related to you after divorce, such as former in-laws, unless your estate planning documents, property settlement agreement, or court order expressly provide otherwise.

The automatic revocation provision under MCA § 72-2-814 applies to these specific categories of governing instruments:

• Last will and testament executed before the divorce
• Revocable living trusts and trust amendments
• Life insurance beneficiary designations (non-ERISA policies)
• Individual Retirement Account (IRA) beneficiary forms
• Annuity contracts and deferred compensation plans
• Payable-on-death (POD) bank account designations
• Transfer-on-death (TOD) brokerage account registrations
• Fiduciary nominations (executor, trustee, guardian)

The U.S. Supreme Court upheld the constitutionality of automatic revocation statutes in Sveen v. Melin (2018), ruling that retroactive application to pre-existing beneficiary designations does not violate the contracts clause of the U.S. Constitution. Montana is among 26 states that have adopted this Uniform Probate Code provision for automatic beneficiary revocation upon divorce.

Updating Your Will After Divorce in Montana

Montana law revokes any provisions in your will that leave property to your former spouse or name them as your personal representative, effective immediately upon your divorce becoming final under MCA § 72-2-814. Your will remains valid for all other provisions, meaning bequests to children, other family members, charities, and friends continue unaffected. However, relying solely on automatic revocation creates gaps because your will may contain contingent provisions, pour-over clauses to a now-problematic trust, or outdated guardian nominations that reference your former spouse as co-guardian.

Creating a new will after divorce in Montana costs between $300 and $600 for a straightforward document, or $600 to $1,000 for more complex estates involving business interests, blended families, or special needs trusts. Montana requires that wills be signed by the testator in the presence of two witnesses who are not beneficiaries under the will, with all parties signing while physically present together.

When drafting your post-divorce will, address these critical elements:

• Designate new beneficiaries for all assets
• Name a new personal representative (executor) to administer your estate
• Appoint a guardian for minor children (if applicable)
• Update any pour-over provisions directing assets to your revocable trust
• Consider whether to include your former spouse in any capacity (requires explicit statement)
• Remove references to joint property that no longer exists
• Update specific bequests affected by property division

Montana allows you to revive provisions benefiting your former spouse through remarriage to the same person, but you should execute a new will explicitly stating your intentions rather than relying on this automatic revival provision.

Revocable Living Trust Amendments After Montana Divorce

Montana Code § 72-2-814 automatically revokes revocable trust provisions favoring your former spouse, including distributions, trustee appointments, and successor beneficiary designations, effective upon entry of your divorce decree. However, your revocable living trust likely contains interlocking provisions that reference your former spouse in multiple capacities requiring a comprehensive trust amendment or complete restatement. The cost to amend a Montana revocable living trust ranges from $500 for minor modifications to $1,500-$3,000+ for substantial revisions or complete restatements.

Under Montana Uniform Trust Code MCA § 72-38-602, you may revoke or amend a revocable trust at any time unless the trust instrument expressly provides otherwise. For trusts created jointly with your former spouse, your divorce settlement agreement should address how trust assets are divided and whether the trust will be split, terminated, or continued under amended terms.

When amending your trust after divorce, evaluate these components:

• Primary and contingent beneficiary designations
• Trustee and successor trustee appointments
• Distribution provisions and timing
• Provisions for minor children
• Spendthrift clauses and creditor protection
• Incapacity provisions and disability trustees
• Integration with your pour-over will

A trust restatement creates a clean document incorporating all changes, while maintaining the original trust date for administrative continuity. Many Montana estate planning attorneys recommend a complete restatement rather than multiple amendments to avoid confusion and potential interpretation disputes.

Power of Attorney Changes Required After Divorce

Montana law automatically terminates your former spouse's authority to act as your agent under a power of attorney when you or your spouse files for divorce, not merely upon final decree, under Mont. Code § 72-31-310. If you named a successor agent in your original document, that person automatically assumes the role. If you did not name a successor, your power of attorney may become ineffective at the moment you need it most, such as during a medical emergency or financial crisis.

The Montana Uniform Power of Attorney Act requires that revocations be communicated to third parties who may rely on the document. Send written revocation notices to all banks, financial institutions, and healthcare providers that have your original power of attorney on file. If your original power of attorney was recorded with the Montana County Clerk and Recorder, you must record the revocation in the same county.

Executing a new durable power of attorney after divorce protects you in these scenarios:

• Financial institutions may reject an old POA where the named agent was your spouse
• Medical providers need current healthcare directive documentation
• Real estate transactions require clear agency authority
• Business decisions may need immediate attention during incapacity

Montana allows you to execute both a financial power of attorney and a healthcare power of attorney, or combine them into a single comprehensive document. Standard notarization fees in Montana range from $10 to $50 per document.

Healthcare Directive and Living Will Updates

Montana law revokes your designation of a former spouse as your healthcare agent upon divorce, annulment, dissolution of marriage, or legal separation unless your healthcare directive or durable power of attorney expressly provides otherwise. If you named a back-up agent in your original healthcare directive, that person automatically becomes your primary agent. Review your healthcare directive within 30 days of your divorce becoming final to ensure continuity of decision-making authority during medical emergencies.

The Montana End-of-Life Registry provides electronic storage of advance directives accessible to registered healthcare providers 24 hours a day. If you registered your previous healthcare directive with this system, update your registration after executing new documents. Healthcare directives in Montana require either notarization or the signatures of two adult witnesses who are not healthcare providers or facility employees.

Your post-divorce healthcare directive should address:

• Designation of a new healthcare agent (not your former spouse)
• Appointment of one or two successor agents
• Specific treatment preferences and end-of-life wishes
• Organ donation instructions
• Mental health treatment authorizations (if applicable)
• HIPAA authorization for medical information release

Montana healthcare directives remain valid indefinitely unless revoked. You may revoke your healthcare power of attorney either in writing, signed by you, or by verbal statement in the presence of a healthcare provider who will document the revocation in your medical record.

Retirement Account Beneficiary Designations and QDRO Requirements

Employer-sponsored retirement plans governed by ERISA, including 401(k)s, 403(b)s, and pension plans, are not subject to Montana's automatic revocation statute because federal law preempts state beneficiary revocation rules. If you do not affirmatively change your beneficiary designation on ERISA-covered accounts, your former spouse may inherit the entire balance even after divorce. The average QDRO (Qualified Domestic Relations Order) processing time is 3-6 months, and having the QDRO drafted before your divorce is finalized prevents gaps in protection.

Montana divides retirement accounts using equitable distribution principles under MCA § 40-4-202. The portion of retirement accounts accumulated during the marriage is subject to division, while pre-marital contributions and growth may remain separate property depending on how accounts were managed.

Retirement account considerations by type:

Montana public employee pensions administered by MPERA (Montana Public Employee Retirement Administration) require a Family Law Order (FLO) under MCA § 19-2-907 rather than a standard QDRO. The FLO has stricter requirements than federal QDROs and must be submitted directly to MPERA for approval. IRA transfers between spouses incident to divorce do not require a QDRO and qualify for tax-free treatment under IRC § 408(d)(6) when executed as trustee-to-trustee transfers.

Life Insurance Policy Beneficiary Changes

Montana's automatic revocation statute under MCA § 72-2-814 revokes beneficiary designations naming your former spouse on individual life insurance policies purchased outside your employment. However, employer-provided group life insurance policies governed by ERISA require manual beneficiary changes because federal law preempts state automatic revocation statutes. Submit new beneficiary designation forms to your employer's human resources department within 30 days of your divorce becoming final.

As of April 2026, Montana is one of 26 states with automatic revocation statutes affecting life insurance beneficiary designations. The rationale underlying these statutes is that divorced individuals typically would not intend to benefit a former spouse upon death, and failure to update a beneficiary designation is more likely oversight than deliberate choice.

Post-divorce life insurance planning steps:

• Contact each insurance carrier directly to request beneficiary change forms
• Designate primary and contingent beneficiaries on each policy
• Consider whether divorce decree requires maintaining coverage for child support or alimony
• Document coverage amounts required under your settlement agreement
• Review whether existing coverage remains appropriate for changed circumstances
• Obtain new coverage if your former spouse owned policies on your life

If your divorce decree requires you to maintain life insurance naming your former spouse as beneficiary to secure support obligations, you may expressly designate your former spouse as beneficiary after divorce by completing new beneficiary forms dated after your decree. This affirmative designation overrides the automatic revocation provisions.

Real Property Deeds and Joint Tenancy Severance

Montana Code § 72-2-814 automatically severs joint tenancy with right of survivorship held with your former spouse, converting the ownership to tenancy in common effective upon your divorce decree. This means your former spouse no longer automatically inherits your share of jointly-held real property upon your death. Instead, your share passes according to your will or Montana intestacy laws. However, the automatic severance does not change title recorded with the county, so executing a new deed reflecting the proper ownership structure remains essential.

Most Montana property settlement agreements address real estate disposition, typically through one of these mechanisms:

• Sale of property with proceeds divided according to agreement
• One spouse buys out the other's interest (requires new financing)
• Continued co-ownership for a specified period (often until children reach majority)
• Transfer of entire interest to one spouse via quitclaim or warranty deed

Recording fees for deeds in Montana vary by county but typically range from $10 to $25 for the first page plus $5 per additional page. Montana also assesses a realty transfer certificate fee based on the property's value when ownership changes, though transfers incident to divorce may qualify for exemption in some circumstances.

Bank Account and Investment Account Updates

Payable-on-death (POD) designations on bank accounts and transfer-on-death (TOD) registrations on brokerage accounts naming your former spouse are automatically revoked under Montana Code § 72-2-814 upon divorce. However, financial institutions may not be aware of your divorce and could mistakenly distribute funds to your former spouse unless you provide written notice and update account registrations. Contact each financial institution within 30 days of your divorce to update beneficiary designations and remove your former spouse from joint accounts.

Account changes to implement after Montana divorce:

• Close joint checking and savings accounts
• Open new individual accounts at your preferred institution
• Update POD beneficiaries on all deposit accounts
• Transfer brokerage accounts to individual ownership
• Update TOD registrations on investment accounts
• Change authorized users and signers on all accounts
• Update automatic deposits (payroll, Social Security) to new accounts
• Redirect automatic payments to new account numbers

Montana does not charge state-level fees for updating bank account beneficiaries or registrations. Financial institutions may assess their own account closing or transfer fees, typically ranging from $0 to $50 depending on the institution and account type.

Estate Planning Timeline After Divorce

Complete estate planning updates within 90 days of your divorce becoming final to ensure comprehensive protection. The 90-day window accounts for the time needed to receive certified copies of your decree, schedule attorney consultations, and complete document execution. Delaying estate planning updates creates risk that automatic revocation provisions may not adequately protect your intended beneficiaries.

Prioritize ERISA-governed accounts first because Montana's automatic revocation statute does not protect these assets. Your former spouse could inherit your entire 401(k) balance if you die before changing the beneficiary designation, regardless of what your will or divorce decree states.