When and How to Update Your Will

By Patricia Larson, J.D. March 18, 2026 8 min read

Quick answer: Update your will after every major life event—marriage, divorce, birth of children, death of a beneficiary or executor, significant asset changes, or moving to a new state. For minor changes, use a codicil (legal amendment). For major revisions, create an entirely new will that revokes the old one. Never handwrite changes on your existing will—it can invalidate the entire document.

A will isn't a "set it and forget it" document. Life changes, and your will must change with it. An outdated will can cause exactly the problems you wanted to avoid: unintended beneficiaries, family disputes, and lengthy court battles.

When to Update Your Will

Marriage or Remarriage

Why it matters: In most states, marriage automatically revokes a will made before the marriage (unless the will explicitly states it was made in contemplation of that marriage). Even if not automatically revoked, your new spouse may have legal claims to your estate that override your old will.

What to do: Create a new will immediately after marriage that:

Timeline: Within 3 months of marriage

Divorce or Legal Separation

Why it matters: Most states automatically revoke provisions benefiting an ex-spouse after divorce, but this varies. Don't rely on automatic revocation—explicitly update your will.

What to do:

Timeline: As soon as divorce is finalized (or even before if state law allows)

⚠️ Critical: Beneficiary designations on retirement accounts and life insurance are NOT automatically updated by divorce in most states. Your ex-spouse could inherit your 401(k) even if you've updated your will. Change these separately from your will!

Birth or Adoption of Children

Why it matters: Children born after your will is executed may not be covered, or may receive an unintended share under "pretermitted heir" statutes (laws protecting children accidentally omitted from wills).

What to do:

Timeline: Within 6 months of birth/adoption (sooner if possible)

Death of a Beneficiary, Executor, or Guardian

Why it matters: If a beneficiary predeceases you and you haven't named alternates, their share may pass under residuary clauses or intestacy law—potentially to unintended heirs.

What to do:

Timeline: Within 3-6 months

Significant Change in Assets

Why it matters: Major changes in wealth may require different estate planning strategies, especially regarding taxes, creditor protection, or distribution timing.

Examples that trigger updates:

What to consider:

Timeline: Within 6-12 months, or sooner if estate tax implications arise

Moving to a New State

Why it matters: Estate laws vary significantly by state. While a will executed in one state is generally valid in another, specific provisions may not comply with your new state's requirements.

State differences to consider:

What to do:

Timeline: Within 6-12 months of establishing residency

Changes in Relationships

Why it matters: Estrangement from a beneficiary, closer relationships with someone you want to include, or changes in who you trust as executor all warrant updates.

Examples:

Timeline: As soon as the relationship change is clear and unlikely to reverse

Changes in Tax Law

Why it matters: Federal estate tax exemptions and rates change, sometimes dramatically. The exemption is scheduled to drop from $13.61 million (2024) to around $7 million in 2026 unless Congress acts.

When to update: If changes in tax law affect your estate (typically only if your estate exceeds $1-2 million, depending on the change)

Age Milestones

Even without specific life events, review your will:

How to Update Your Will: Codicil vs New Will

Option 1: Create a Codicil

A codicil is a legal document that amends your existing will without completely replacing it.

Use a codicil for minor changes:

Requirements for a valid codicil:

Advantages:

Disadvantages:

Option 2: Create a New Will

For major changes, it's cleaner to create an entirely new will that explicitly revokes all prior wills and codicils.

Use a new will for major changes:

Required language:

"I hereby revoke all prior wills and codicils."

Advantages:

Disadvantages:

Common Mistakes When Updating Wills

1. Handwriting Changes on Your Existing Will

NEVER do this. Crossing out provisions, writing in margins, or making handwritten changes can:

Even if your state recognizes holographic (handwritten) wills, handwritten changes to a typed will are rarely valid.

2. Creating Multiple Wills Without Revoking Prior Ones

If you create a new will but don't explicitly revoke prior wills, you may end up with:

Always include: "I revoke all prior wills and codicils."

3. Forgetting to Update Beneficiary Designations

Updating your will doesn't update:

These assets pass outside your will directly to named beneficiaries. Update them separately.

4. Not Following Proper Execution Requirements

Even minor updates (codicils) must be:

An improperly executed codicil is invalid, leaving your original will in effect.

5. Updating Your Will But Not Telling Anyone

Your executor needs to know:

Destroy old versions or clearly mark them "REVOKED" to avoid confusion.

How to Update Your Will: Step-by-Step

Step 1: Review Your Current Will

Identify what needs to change:

Step 2: Decide: Codicil or New Will?

Codicil: 1-2 minor changes, original will is otherwise fine

New will: Major changes, multiple updates, or if it's been 5+ years

Step 3: Use Online Services or Attorney

Online: Services like Trust & Will offer will updates for $50-$150, or unlimited updates with a subscription

Attorney: $300-$1,000 for updates, depending on complexity

Step 4: Execute the Update Properly

Follow your state's requirements exactly:

Step 5: Store and Communicate

Step 6: Update Related Documents

Update Your Will Online

Trust & Will makes it easy to update your will or create a new one. Complete updates in 15 minutes.

Update Your Will →

Cost of Updating a Will

Online Services

Attorney

Special Circumstances

Emergency Updates

If you need to make emergency changes due to sudden illness:

Updating Trusts

Revocable living trusts are easier to update than wills:

Related Articles

Frequently Asked Questions

When should I update my will?
Update your will after major life events: marriage, divorce, birth/adoption of children, death of a beneficiary or executor, significant asset changes (inheritance, home purchase), moving to a new state, or if your will is over 5 years old. Also update if relationships change or tax laws affecting your estate change.
Can I just cross out parts of my will and write in changes?
NO—never handwrite changes on your will. Crossing out or writing on an executed will can invalidate the entire document in many states. Instead, create a formal codicil (amendment) or draft a new will that explicitly revokes the prior one.
What is a codicil and when should I use one?
A codicil is a legal amendment to an existing will. Use a codicil for minor changes: changing an executor, adding a small bequest, or updating an address. For major changes (new beneficiaries, complete restructuring, changing guardians), create an entirely new will instead.
Does getting married automatically update my will?
No, but in most states marriage automatically revokes a will made before marriage (unless the will was specifically made in contemplation of that marriage). After marriage, create a new will. If you remarry without updating your will, state intestacy laws may override your old will's provisions.
How much does it cost to update a will?
Online services charge $50-$150 to update a will, or offer unlimited updates with a subscription ($19-$39/month). Attorneys charge $300-$1,000 depending on the scope of changes. Creating a completely new will costs the same as an update for major revisions.

About the Author: Patricia Larson, J.D., is an estate planning attorney with 20 years of experience in elder law and trust administration. She regularly helps clients update and revise their estate plans as life circumstances change.