Is it Better to Make a Codicil or New Will

Emily just called, frantic. Her mother passed away last month, and the codicil to her estate plan—the one intended to leave a cherished family heirloom to Emily’s daughter—was deemed invalid. A minor formatting error, a slightly different signature than the original will, and now the item will likely go to a distant cousin. The legal fees to untangle this mess? Over $10,000, not to mention the emotional toll. This scenario plays out far too often, and it’s why, after 35-plus years as an Estate Planning Attorney and CPA, I often advise clients to consider a completely new will instead of a codicil, even for seemingly small changes.

Many believe a codicil is a “quick fix” – a simple addendum to an existing will. While technically true, that simplicity can be deceptive. Codicils are prone to challenges, particularly if not executed with meticulous precision. Every signature, date, and witnessing requirement must be absolutely correct, mirroring the standards of the original will. A mistake, however slight, can cast doubt on its validity, opening the door to probate disputes. 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 are the risks of using a codicil?

The primary risk, as Emily’s case demonstrates, is invalidation. Courts scrutinize codicils closely. Even if not entirely thrown out, a portion of the codicil could be deemed unenforceable, leading to unintended consequences and potentially forcing the estate to follow the terms of the original will, which may no longer reflect your wishes. This is especially true if the codicil attempts to substantially alter the core provisions of the original document.

When is a codicil appropriate?

A codicil can be suitable for very minor, straightforward updates. Perhaps you’ve changed the name of an executor or want to add a small, specific bequest. These isolated changes, when properly executed, can be handled efficiently with a codicil. However, even in these cases, I always advise clients to carefully weigh the potential risks against the perceived convenience.

What are the advantages of creating a new will?

A new will offers several crucial benefits. First, it eliminates the ambiguity associated with patching together an old document with an addendum. A complete rewrite provides clarity and ensures all provisions are consistent and harmonious. Second, it allows for a comprehensive review of your entire estate plan. Life changes – marriages, divorces, births, deaths, significant financial events – all impact your wishes. A new will forces you to address these changes proactively, rather than relying on a potentially outdated document with tacked-on amendments.

How does a CPA’s perspective benefit estate planning?

As a CPA with decades of experience, I bring a unique perspective to estate planning. It’s not just about who gets what; it’s about minimizing tax liabilities and maximizing the value of the inheritance. For example, 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. Understanding the intricacies of step-up in basis, capital gains, and proper asset valuation is critical to ensuring your beneficiaries receive the maximum benefit. We can also advise on the proper funding of trusts to take advantage of these tax benefits.

What about digital assets and LLCs?

Modern estate planning must also address digital assets – your online accounts, cryptocurrency, and intellectual property. 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. Furthermore, if you own an LLC, understanding the reporting requirements is paramount. 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. Incorporating these considerations into a comprehensive new will offers far greater protection.

Are handwritten wills (holographic codicils) valid?

Yes, 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, I strongly advise against relying on holographic codicils due to the increased risk of ambiguity and potential challenges. The level of scrutiny is extremely high, and any ambiguity will likely be construed against the handwriting.

Ultimately, while a codicil might seem easier in the short term, a new will generally provides greater security, clarity, and peace of mind. It’s an investment in protecting your legacy and ensuring your wishes are carried out exactly as you intend.

What does a California probate court look for when interpreting testamentary intent?

In California, a last will and testament operates within a probate system that emphasizes intent, clarity, and procedural compliance. When properly drafted, a will does more than distribute property—it creates legally enforceable instructions that guide courts, fiduciaries, and beneficiaries through administration with fewer disputes and less uncertainty.

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:
  
  San Diego Superior Court – Probate Division
  
  Official Escondido County probate rules, filing procedures, examiner notes, and Local Rule 4.4.5 governing remote appearances and 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.
• Judicial Council Forms & Self-Help:
  
  California Courts – Wills, Estates, and Probate
  
  State-issued probate forms and guidance, including small estate procedures, primary residence transfers under AB 2016, and executor responsibilities.
• Federal Estate & Gift Tax Law:
  
  IRS Estate Tax Guidelines
  
  Federal rules governing estate and gift tax filing, including the permanent 2026 OBBBA exemption of $15 million per individual.