A codicil to a will in Pennsylvania is a written amendment that changes specific parts of your existing will without replacing the whole document. Pennsylvania law holds a codicil to the same execution standard as the will itself, so the signing and capacity rules are identical. Codicils work well for small updates, like swapping an executor or adjusting a single bequest. For anything larger, drafting a new will is almost always the better call.
Signing Requirements
The document must be in writing and signed by you at the end. You must be at least 18 and of sound mind when you sign.1Pennsylvania General Assembly. Title 20 Decedents, Estates and Fiduciaries – Chapter 25 Wills Sound mind, for these purposes, means you understood what you owned, who would naturally inherit from you, and what effect the codicil would have on your overall plan. If someone later challenges your capacity, the court will look at medical records, witness testimony, and expert evaluations from around the time you signed.
The codicil must also reflect your genuine wishes. A court can void it for undue influence if a beneficiary steered you into changes that disproportionately favor them, especially when you were physically or mentally vulnerable and that person controlled your affairs.
Witnesses and the Self-Proving Affidavit
Pennsylvania does not require witnesses for a standard will or codicil. Your signature alone is enough. Witnesses become mandatory only if you sign by mark or if someone else signs on your behalf.1Pennsylvania General Assembly. Title 20 Decedents, Estates and Fiduciaries – Chapter 25 Wills
Even when the law doesn’t demand them, two disinterested adult witnesses strengthen the document if anyone contests it later. You can go further by making the codicil self-proving. Under 20 Pa.C.S. § 3132.1, if you and your witnesses sign affidavits before a notary or other authorized officer, the register of wills can accept those affidavits as proof of valid execution without calling the witnesses to testify during probate.2Pennsylvania General Assembly. 20 Pennsylvania Consolidated Statutes Section 3132.1 – Self-Proved Wills Without one, your executor may need to track down witnesses years later. That gets harder every year, and if the witnesses have died or moved out of state, proving the codicil becomes a real problem.
Pick witnesses who have no stake in your estate. A beneficiary’s testimony carries less weight if the document is ever challenged.
When a Codicil Makes Sense and When It Doesn’t
A codicil works best for narrow updates: naming a new executor, changing a dollar amount, adding a gift to a new grandchild, or removing a provision that no longer applies. Everything the codicil doesn’t touch stays in effect.
A new will is the better route when you need to rework how your estate is distributed, change the residuary clause, or make changes on top of an existing codicil. Multiple codicils layered onto one will create interpretation problems. A probate court has to read them together and reconcile contradictions, and that invites exactly the litigation most people draft an estate plan to avoid. Once you’re on a second round of changes, consolidating into a fresh will is almost always worth the extra cost.
Executing a new will with a revocation clause replaces all prior wills and codicils.3Pennsylvania General Assembly. 20 Pennsylvania Consolidated Statutes Section 2505 – Revocation of a Will A codicil only supplements the original.
How to Draft and Execute One
Start by identifying your original will by its execution date and stating clearly which provisions you’re changing. Vague language is the single biggest source of codicil disputes. Reference the specific article or section being amended, state what the old provision said, and state the replacement.
Sign the codicil at the end. For the strongest possible document, have two disinterested adults witness your signature and execute a self-proving affidavit before a notary under 20 Pa.C.S. § 3132.1.2Pennsylvania General Assembly. 20 Pennsylvania Consolidated Statutes Section 3132.1 – Self-Proved Wills
Store the signed codicil with your original will. Physically attaching it by staple or clip reduces the risk of separation. Pennsylvania does not require you to file a will or codicil with any court during your lifetime, but your executor needs to know where both documents are. If a codicil cannot be found after your death, the probate court may presume you destroyed it intentionally, and the original will would stand unmodified.3Pennsylvania General Assembly. 20 Pennsylvania Consolidated Statutes Section 2505 – Revocation of a Will
What a Codicil Cannot Change
Your will only controls assets that pass through probate, so a codicil cannot redirect several common asset types no matter what it says:
- Jointly held property with right of survivorship, which passes automatically to the surviving owner.
- Retirement accounts and life insurance, which follow the beneficiary designation on file. For employer-sponsored retirement plans governed by ERISA, federal law makes a will or codicil completely unenforceable as a way to change the beneficiary. For IRAs, the result depends on the custodial agreement, but courts almost universally hold that a general will provision does not override a filed beneficiary designation form.
- Payable-on-death and transfer-on-death bank and investment accounts.
- Assets held in a living trust, which follow the trust document.
To change who receives any of these, update the beneficiary designation or account registration directly with the financial institution. A codicil won’t do it.
If You’ve Divorced Since Signing Your Will
You may not need a codicil to cut out a former spouse. Under 20 Pa.C.S. § 2507, any provision in your will that benefits or relates to your spouse becomes automatically ineffective once a divorce is final, unless the will itself says the provision was intended to survive divorce.4Pennsylvania Legislature. 20 Pennsylvania Consolidated Statutes Section 2507 – Revocation by Changes in Family The same rule applies if you die during pending divorce proceedings where grounds have already been established.
Automatic revocation only strips out provisions for the former spouse. It does not redirect those assets to anyone else or update the rest of your plan. A codicil or new will after divorce is still the practical move: name a new beneficiary for whatever your ex-spouse would have received and update your executor designation if your former spouse held that role.
Tax Effects of Changing Who Inherits
Redirecting a bequest can change how much tax your estate owes. Pennsylvania inheritance tax rates depend on the beneficiary’s relationship to you:5Pennsylvania Department of Revenue. Inheritance Tax
- Surviving spouse: 0%
- Children and lineal descendants: 4.5%
- Siblings: 12%
- Everyone else, including unmarried partners, friends, nieces, and nephews: 15%
Charitable organizations and government entities are exempt.5Pennsylvania Department of Revenue. Inheritance Tax A codicil that shifts a bequest from your child to a friend more than triples the tax rate on that portion of the estate. Run the numbers before signing.
Revoking or Changing a Codicil
You can revoke a codicil at any time while you’re still legally competent. Pennsylvania provides two methods under 20 Pa.C.S. § 2505:3Pennsylvania General Assembly. 20 Pennsylvania Consolidated Statutes Section 2505 – Revocation of a Will
- Execute a later codicil or a new will that expressly revokes the earlier codicil. This is the cleanest approach.
- Intentionally burn, tear, or obliterate the codicil. Accidental damage doesn’t count; intent matters.
If a codicil goes missing after your death, the court may presume you destroyed it on purpose unless someone produces evidence that the document still existed when you died.3Pennsylvania General Assembly. 20 Pennsylvania Consolidated Statutes Section 2505 – Revocation of a Will
To modify a codicil without fully revoking it, you execute another codicil. But stacking amendments leads to interpretive fights. On a second round of changes, draft a new will instead.
How a Codicil Can Be Challenged
Challenges usually come from beneficiaries who lost something in the change. The grounds fall into a few categories.
Undue influence. The most common challenge. Courts weigh your physical and mental condition, how dependent you were on the alleged influencer, and whether the changes disproportionately benefit that person. When the alleged influencer had a confidential relationship with you and helped prepare the codicil, the burden flips: they must prove the document was your free act. That burden grows heavier when the evidence also shows you were in weakened condition at the time.
Lack of capacity. The contestant argues you didn’t understand what you owned, who your natural heirs were, or what the codicil would do to your estate plan. Medical records from around the time of signing carry heavy weight.
Fraud. Someone tricks you into signing a document you don’t understand, misrepresents what the codicil says, or substitutes pages.
No-contest clauses. A will or codicil can include an in terrorem clause stripping any beneficiary who challenges the document and loses. Pennsylvania courts generally enforce these, so a beneficiary weighing a contest risks forfeiting what they’d otherwise inherit.
To keep dispute risk low, keep the codicil’s language unambiguous, use witnesses even when the law doesn’t demand them, and add a self-proving affidavit.
Typical Costs
Most estate planning attorneys charge between $200 and $500 to draft a straightforward codicil, though rates vary by the attorney’s experience and by how complicated the changes are. Codicils that interact with trust documents or tax planning cost more. A new will typically runs several hundred to several thousand dollars, which is why a codicil is the more economical option for simple updates.
If you add a self-proving affidavit, you’ll need a notary. Pennsylvania delegates notary fee limits to the Department of State by regulation, and the typical charge is modest.6Pennsylvania General Assembly. 57 Pennsylvania Consolidated Statutes Section 329.1 – Fees of Notaries Public The codicil itself is not filed with any court during your lifetime. It is submitted alongside the original will during probate after your death, and court filing fees vary by county.