Do I Need the Same Witnesses as the Will

Emily just received devastating news: the codicil she signed last year to update her estate plan has been deemed invalid. A clerical error during signing—a witness used an initial instead of their full name—has thrown her entire plan into jeopardy. The cost to litigate the issue and potentially redo the entire will is exceeding $10,000, and Emily is understandably distraught.

Can I Use the Same Witnesses for a Codicil as My Original Will?

It’s a common question, and unfortunately, the answer isn’t always straightforward. While it seems logical to use the same witnesses for a codicil as you did for your original will or trust, California law doesn’t explicitly require it, but doing so doesn’t guarantee validity either. The crucial element is proper witnessing at the time the codicil is signed.

The requirements for witnessing a codicil mirror those of a will itself: you generally need two witnesses, each of whom must be present at the same time, observe either your signature or your acknowledgment of the signature, and sign the codicil themselves in your presence and in the presence of each other. A mistake with even one witness can lead to a challenge, as Emily painfully discovered.

What Happens If a Witness is Disqualified?

If a witness is later found to be disqualified – perhaps they were under duress, lacked capacity, or, as in Emily’s case, made a technical error in signing – that can invalidate the codicil. This doesn’t necessarily mean the entire will is thrown out, but it does mean that portion of your estate plan governed by the flawed codicil is unenforceable. That’s why meticulous attention to detail during the signing process is paramount. If a codicil is invalidated, assets may force full probate; however, for deaths on or after April 1, 2025, estates under $208,850 (per CPC § 13100) may still qualify for simplified procedures. This limit is set until 2028.

What About Holographic Codicils?

Holographic codicils—those handwritten entirely by you—have different rules. As per Probate Code 6111, handwritten codicils are valid in California under Probate Code 6111, but only if the signature and material provisions (who gets what) are in your own handwriting. No witnesses or notary are required for this specific format. However, relying solely on holographic codicils isn’t always wise, as they can be more easily challenged if there’s ambiguity in your handwriting or intent.

How Do Changes to Tax Laws Affect My Codicil?

It’s essential to periodically review your estate plan, including any codicils, in light of changes in tax laws. The 2026 ‘tax cliff’ was averted by the OBBBA, which permanently increased the Federal Estate Tax Exemption to $15 million per person effective Jan 1, 2026. Old formula clauses should be reviewed to ensure they don’t over-fund trusts under these new limits. A seemingly minor update to your will or trust through a codicil can prevent significant estate tax consequences down the line.

What About Updating Business Ownership in a Codicil?

If your codicil involves changes to business ownership, especially involving Limited Liability Companies (LLCs), understanding current reporting requirements is vital. As of March 2025, FinCEN has exempted domestic U.S. LLCs from BOI reporting; however, foreign-registered entities in the U.S. still face mandatory filing requirements and potential penalties. Failing to account for these changes in your codicil can create unexpected complications for your successors.

Don’t Forget About Digital Assets

A standard codicil often fails to include the specific RUFADAA language (CPC § 870) required to bypass federal privacy laws, potentially leaving your heirs locked out of crypto-wallets and email accounts. Digital assets are becoming increasingly significant parts of estates, and a properly drafted codicil should address access and control of these assets.

For over 35 years, I’ve guided clients through the complexities of estate planning as both an attorney and a CPA. I’ve seen firsthand how seemingly small errors can lead to costly and emotionally draining disputes. My CPA background allows me to analyze the tax implications of estate planning decisions, particularly the critical step-up in basis for inherited assets and valuation issues for closely held businesses. Don’t make the same mistake as Emily. A carefully drafted and properly executed codicil – or a full review of your estate plan – can provide peace of mind knowing your wishes will be honored.

How do California courts decide whether a will reflects true intent or creates ambiguity?

In California, a last will and testament is reviewed under probate standards that focus on intent, capacity, and execution. Clear drafting reduces ambiguity, limits misinterpretation, and helps families avoid unnecessary conflict during estate administration.

To create a valid document, you must ensure the signer has testamentary capacity, strictly follow California will rules, and ensure you are correctly identifying the will maker to prevent identity disputes.

For California residents, understanding how intent, authority, and compliance interact is one of the most effective ways to protect family harmony and estate integrity. A will that anticipates probate scrutiny is far more likely to be honored as written and far less likely to become the source of unnecessary conflict.

Primary Legal Authorities Governing Probate and Estate Administration

• Probate & Local Court Rules:
  
  Riverside Superior Court – Probate Division
  
  Official Riverside County probate rules (Title 7), filing procedures, examiner notes, and specific protocols for remote appearances via the court’s designated platform for non-evidentiary hearings.
• Attorney Licensing & Ethical Standards:
  
  State Bar of California
  
  The authoritative source to verify attorney license status, disciplinary history, and current ethical rules governing California attorneys and client trust accounts (IOLTA).
• Judicial Council Forms & Self-Help:
  
  California Courts – Wills, Estates, and Probate
  
  State-issued probate forms and guidance, including small estate procedures ($208,850 limit), primary residence transfers under AB 2016 ($750,000 limit), and executor responsibilities.
• Federal Estate & Gift Tax Law:
  
  IRS Estate Tax Guidelines
  
  Federal rules governing estate and gift tax filing, including the permanent 2026 exemption of $15 million per individual (indexed for inflation).