This article provides general educational information, not legal advice; attorney fee ranges reflect 2026 published market data and vary by state and firm, and federal transfer tax figures are 2026 amounts confirmed in IRS Revenue Procedure 2025-32.
TL;DR — Quick Verdict
- A codicil — the formal amendment to an existing will — runs $150–$400 for simple changes through an estate planning attorney, versus $300–$1,000 to rewrite the will outright.
- Divorce automatically revokes gifts to a former spouse in states following Uniform Probate Code §2-804, but that statute does not reach ERISA-governed retirement plans, where an outdated beneficiary designation still controls.
- LegalZoom charges $99 for a basic will and includes 30 days of free revisions; after that window, ongoing document access runs $199 per year, while Trust & Will’s unlimited revisions plan costs $49 per year.
- Stacking three codicils on one will typically costs more in cumulative fees than a single rewrite and creates interpretation risk your executor pays for later.
- The 2026 federal estate and gift tax exemption is $15 million per individual, which makes tax-driven formula clauses in pre-2018 wills a live rewrite trigger, not an optional one.
- Recommendation: use a codicil for one discrete change within 24 months of signing; rewrite for anything touching beneficiaries, guardians, or tax clauses.
Roughly two-thirds of American adults have no will at all — but the quieter problem belongs to the people who do. A will signed in 2014 naming a spouse who is now an ex, an executor who has since died, and a tax formula clause written for a $5 million exemption is not a plan. It is a liability with a signature on it. The federal estate and gift tax exemption stands at $15 million per individual for 2026 under Revenue Procedure 2025-32, a figure that renders whole categories of older bypass-trust language actively counterproductive.
This article maps the nine life events that should trigger a will update, prices the two mechanisms for making that update — a codicil versus a full rewrite — and compares attorney fees against platform pricing from LegalZoom and Trust & Will. You will get the breakeven math on when stacking amendments stops making financial sense, the three update triggers that silently void parts of your document without any action on your part, and the specific circumstances under which a $250 codicil creates a $30,000 probate dispute.
What a Will Update Actually Costs in 2026
Two mechanisms exist for changing a will. A codicil amends specific provisions while leaving the original document in force. A rewrite — sometimes called a restatement in the trust context — replaces the document entirely and revokes what came before. Pricing diverges less than most people assume.
Attorneys price codicils close to what they charge for simple wills because the work is comparable. The drafting is shorter, but the execution formalities, witness requirements, and malpractice exposure are identical. A codicil must be signed and witnessed with the same ceremony as the original will in nearly every state. That fixed overhead is why the discount for “just a small change” is thinner than clients expect.
Attorney ranges compiled from OC Elder Law published fee guidance and SmartAsset codicil cost analysis; platform pricing from LegalZoom, accurate as of May 2026. Verify current platform pricing at legalzoom.com and trustandwill.com. For baseline document pricing, see our analysis of attorney and online will costs.
Notice the overlap. A complex codicil at $400 and a rewrite at $400 buy you very different things — one leaves you with two documents to reconcile, the other with one clean instrument. That overlap drives most of the decision logic in this article.
Nine Triggers That Should Send You Back to Your Attorney
Life events fall into three tiers by urgency. Tier one events change who inherits. Tier two events change who administers. Tier three events change the legal or financial framework the document was built around.
Tier One — Beneficiary-Altering Events
Marriage, divorce, the birth or adoption of a child, and the death of a named beneficiary all sit here. Each one changes the answer to the central question a will exists to answer. Divorce carries a particular trap discussed in the next section. Birth of a child triggers not only distribution changes but a guardian designation for minor children, which is the single provision most often missing from platform-generated wills.
Tier Two — Fiduciary and Structural Events
Your named executor dies, moves out of state, develops a health condition, or falls out of your trust. Some states restrict out-of-state executors or require them to post a bond, which converts a convenience problem into a cost problem for your estate. The same applies to successor trustees if you also maintain a trust.
Tier Three — Framework Events
Moving to a new state, acquiring or selling significant property, and changes in transfer tax law all belong here. Consider a concrete case. Elena signs a will in Illinois in 2016 containing a formula clause directing “the maximum amount passing free of federal estate tax” into a bypass trust for her children, with the remainder to her husband. In 2016 that formula funded roughly $5.45 million into the trust. Under the 2026 exemption of $15 million, the same clause would sweep her entire $2.8 million estate into the bypass trust and leave her husband with nothing outright. The words did not change. The number behind them did.
That scenario is not exotic. Any will drafted before 2018 that uses exemption-linked formula language needs review, and the review is a rewrite conversation rather than a codicil conversation. If Elena’s plan also involves a trust, the interaction between the two documents matters — see the living trust and will cost comparison for how the paired structure prices out.
Three Triggers That Change Your Will Without You Touching It
Some events alter the legal effect of your will by operation of law. You do not sign anything. You may not even know it happened.
Divorce is the clearest example. Under Uniform Probate Code §2-804, a divorce or annulment revokes any revocable disposition to a former spouse, revokes any nomination of the former spouse as executor, and severs joint tenancies with right of survivorship into tenancies in common. The 1990 revisions extended the rule to relatives of the former spouse and to will substitutes including revocable trusts, transfer-on-death accounts, and life insurance beneficiary designations.
Here is the gap that costs families money. UPC §2-804 reaches only revocable designations the divorced individual could have changed unilaterally. It does not override federal law. Where ERISA governs — most employer-sponsored 401(k) plans and pension plans — federal preemption means the beneficiary designation on file with the plan administrator controls, and the Supreme Court has affirmed this reading. Your ex-spouse remains the named beneficiary of that 401(k) until you file a new designation form with the administrator. No codicil fixes it. No divorce decree fixes it.
Second, an irrevocable life insurance trust presents the mirror problem: the designation is deliberately outside your control, which is the point, but it also means divorce does not unwind it. Anyone holding an irrevocable life insurance trust should confirm what a marital change does and does not touch.
Third, moving states can affect execution validity, spousal elective share rights, and community property characterization. Most states honor a will validly executed under the law of the state where it was signed, but elective share statutes vary sharply, and community property states treat marital assets under a different framework entirely. A relocation across that line warrants a review even when the document itself remains technically valid.
Codicil vs. Full Rewrite: Which Is Better for a Mid-Life Update?
Consider a 47-year-old with a will signed six years ago. She wants to replace her executor — her father, now 79 — with her sister. One change, one paragraph.
The codicil path costs $150–$400 and takes one appointment. She ends with two documents that must travel together and be admitted to probate together. If the codicil is lost, the original will governs and her 79-year-old father is executor again. If the codicil is ambiguous about whether it supersedes related provisions, her estate pays a lawyer to resolve it.
The rewrite path costs $300–$1,000 and produces one document that revokes everything before it. Nothing to reconcile, nothing to lose.
Run the math across a realistic ten-year window. Three life events over a decade is a conservative assumption for someone in their forties — an executor change, a new grandchild, a property sale. Three codicils at the $250 midpoint totals $750 and leaves four documents in the file. One rewrite at the $650 midpoint, done once at year five, totals $650 and leaves one document. The codicil path costs more and delivers a worse product.
Modeled scenario using midpoints of attorney fee ranges published by OC Elder Law and SmartAsset; platform figures from LegalZoom pricing accurate as of May 2026 (verify at legalzoom.com). Cost totals are illustrative projections, not quoted fees.
Verdict
Use a codicil only when three conditions all hold: the change is a single discrete substitution, the underlying will is under five years old, and no tax or beneficiary structure is affected. Everything else favors a rewrite. The cost gap is roughly $400 at the midpoint, and a single contested interpretation of a stacked codicil will exceed that by an order of magnitude. For a household expecting several changes, the platform route with an unlimited revisions plan at $49 per year is the cheapest path — but only for genuinely simple estates with no minor children and no blended-family dynamics.
What Most People Get Wrong About Amending a Will
Mistake one: writing on the will itself. Crossing out a name and initialing it feels like a fix. In most states it is either legally inoperative or, worse, evidence of an attempted partial revocation that invites a challenge. The correct action is a properly executed codicil or a new will with the same witness formalities as the original.
Mistake two: assuming the will controls retirement accounts. It does not. Beneficiary designations on 401(k) plans, IRAs, and life insurance policies pass outside probate and override anything the will says. This is the most expensive gap in the entire field, and it is entirely preventable — the fix is a form, not a lawyer. Our breakdown of beneficiary designations that override wills covers the account types most often missed.
Mistake three: treating joint ownership as an estate plan. Adding an adult child to a deed avoids probate on that asset and simultaneously exposes it to the child’s creditors, triggers gift tax reporting above the $19,000 annual exclusion, and forfeits the step-up in basis on the transferred share. The joint tenancy versus living trust comparison quantifies the tradeoff.
Mistake four: amending the will but not the trust. Households with a living trust hold two documents that must agree. Amending the will while leaving a stale trust in place produces contradictory instructions. If your plan includes a pour-over will directing assets into a trust, the two must be updated together.
Mistake five: deferring the review because the estate is small. The $15 million exemption means almost no one faces federal estate tax, which people read as permission to stop planning. Federal tax was never the main reason to have a current will. Guardianship, executor selection, and avoiding intestacy are — and the costs of dying intestate fall hardest on modest estates, not large ones.
Is a Paid Update Worth It for Your Situation?
Apply the following conditional logic rather than a generic recommendation.
If your estate is under $500,000, you have no minor children, no blended family, no business interest, and no property outside your home state, a platform rewrite at $99 with a $49 annual revisions plan is defensible. The marginal value an attorney adds at that profile is real but modest, and the online platform versus attorney comparison lays out where the line sits.
If any of the following apply, pay for attorney work: a blended family, a child with a disability who receives means-tested benefits, ownership in a closely held business, real property in more than one state, or a pre-2018 will containing exemption-linked formula language. Each of these introduces failure modes that a questionnaire-driven platform is not designed to catch. A beneficiary receiving Medicaid or SSI in particular requires a special needs trust structured to protect benefits eligibility; an outright bequest in a will can disqualify them.
If you anticipate creditor exposure or a beneficiary with poor financial judgment, the update conversation should include whether a spendthrift trust with beneficiary protections belongs in the plan.
Timing matters as much as the decision itself. Review on a fixed three-to-five-year cycle and after any tier-one event, whichever comes first. A calendar reminder costs nothing and catches the drift that produces most of the expensive outcomes described above.
Frequently Asked Questions
Does a codicil need to be witnessed the same way as the original will?
Yes, in nearly every state. A codicil must satisfy the same execution formalities as a will — typically the testator’s signature plus two disinterested witnesses. California requires two witnesses and does not mandate notarization. This identical formality requirement is why attorneys price codicils at $150–$400 rather than at a token amount: the ceremony, not the drafting, drives the cost.
Can I amend a will myself using an online template?
Legally, yes — only the testator can create a codicil, and no attorney is required. Practically, the error rate is the concern. Codicils carry higher drafting risk than new wills because ambiguity about which original provisions survive is a common ground for challenge. Platform pricing starts near $99 for a full rewrite, which usually makes a clean replacement the better value than a self-drafted amendment.
Does divorce automatically remove my ex-spouse from my will?
In states following Uniform Probate Code §2-804, divorce revokes revocable dispositions to a former spouse and to that spouse’s relatives, and revokes their nomination as executor. The statute does not reach ERISA-governed retirement plans, where the designation filed with the plan administrator controls regardless of state law. File a new beneficiary form directly with the plan administrator.
How does the 2026 estate tax exemption affect whether I need an update?
The exemption is $15 million per individual for 2026, set by section 70106 of the One Big Beautiful Bill Act and confirmed in IRS Revenue Procedure 2025-32. If your will contains a formula clause tied to the exemption amount, that clause now directs a far larger sum than intended when drafted — potentially your entire estate. Wills executed before 2018 with such language need review.
Is it cheaper to amend a trust or a will?
Wills are cheaper to amend. A simple trust amendment runs $300–$500 through an attorney, and a full restatement runs $1,000–$3,000 or more, according to published estate planning fee guidance. Codicils to wills run $150–$400. Households with both documents typically need to update them together, which means budgeting for the combined figure rather than either one alone.
How We Researched This Article
Research for this article was conducted in July 2026 and drew on three source categories: federal statutory and regulatory primary sources, uniform law texts, and published attorney fee data from estate planning practices and legal service marketplaces.
Federal transfer tax figures — the $15 million estate and gift tax exemption, the $19,000 annual gift exclusion, and the $194,000 non-citizen spouse exclusion — were verified against Internal Revenue Service Revenue Procedure 2025-32 and section 70106 of the One Big Beautiful Bill Act, Public Law 119-21, signed July 4, 2025. Statutory language on revocation by divorce was taken from Uniform Probate Code §2-804 as promulgated by the Uniform Law Commission, including the official comments accompanying the 1990 revisions, and cross-checked against enacted state versions published by Justia. Commentary on the interaction between §2-804 and ERISA preemption draws on analysis published by the American Bar Association Real Property, Trust and Estate Law Section.
No federal or state agency publishes a national dataset on codicil or will amendment pricing. Attorney fee figures therefore reflect published fee guidance from practicing estate planning firms and marketplace data aggregated by legal service platforms, reported as ranges rather than point estimates. Where sources conflicted — simple codicil quotes ranged from a $150 floor in some published guidance to an approximately $900 average flat-fee proposal in marketplace data — we report the range and note that regional variation of 20% to 40% between urban and rural markets accounts for much of the spread. Platform pricing was captured from LegalZoom’s published rates as of May 2026 and is subject to change without notice.
The ten-year cost scenarios are modeled projections using the midpoints of verified fee ranges, not measured outcomes. They assume three qualifying life events over the period and no litigation. Actual costs depend on state execution requirements, estate complexity, and individual firm billing practices. Nothing here substitutes for a consultation with a licensed attorney in your jurisdiction.
All figures were verified against named primary sources before publication.