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Do contract changes always have to be in writing?

We agreed to updates verbally, but now one side is questioning whether that actually counts.

Answer

No, contract changes do not always have to be in writing. Verbal changes can sometimes be legally valid if both parties clearly agree.

However, many exceptions apply. In practice, written changes are often required or much easier to enforce, especially if the contract says so.

When are written changes required?

Some contracts must be modified in writing due to legal rules or the contract's own terms.

For example, written changes are often required when:

  • The contract includes a clause requiring written amendments.
  • The agreement falls under laws that require written contracts (such as certain long-term or high-value agreements).
  • The contract is of a type that must be in writing under laws like the statute of frauds.

If your contract includes a "no oral changes" clause, verbal updates are usually not enforceable.

Why are verbal changes risky?

Even when allowed, verbal changes can be difficult to prove. If one party later disagrees, there may be no clear evidence of what was said or agreed. They may also fail to meet any required signature or formality requirements in the original contract.

This can lead to disputes, especially if the terms were not clearly defined or documented. Written agreements help avoid this by creating a clear record of the changes.

What to do next...

  1. Check your contract for any "written changes only" clause.
  2. Review whether your agreement falls under rules requiring written terms.
  3. Document any verbal agreements as soon as possible.
  4. Have both parties sign a written amendment to confirm the changes.

What to consider in your specific situation

While verbal changes can sometimes count, your situation may depend on several key factors.

  • Whether your contract requires written amendments.
  • The type of contract and applicable legal rules.
  • How clearly the verbal agreement was defined.
  • Whether there is any written follow-up or proof.
  • The importance of the changes to your business.
  • The likelihood of disagreement between the parties.

Since every situation is different, consider more information through Rocket Copilot, a Legal Pro, or a legal document review to move forward with confidence.

Explore more about contract change and inclusion clauses

Pro Reviewed
Published on 04/19/2026
Reviewed by Rustin B. Duncan, Esq.

At Rocket Lawyer, we follow a rigorous editorial policy to ensure every article is helpful, clear, and as accurate and up-to-date as possible. This page was created, edited and reviewed by trained editorial staff who specialize in translating complex legal topics into plain language, then reviewed by experienced attorneys to ensure legal accuracy.

Please note: This page offers general legal information, but not legal advice tailored for your specific legal situation. Rocket Lawyer Incorporated isn't a law firm or a substitute for one. For further information on this topic, you can Ask an Attorney.

Laura Bojart
Laura Bojart
Editorial Researcher and Copywriter

Laura Bojart is an SEO copywriter and editor at Rocket Lawyer. She researches legal and business topics and translates complex ideas into clear, practical content for everyday readers. With her background in journalism and endless curiosity, she approaches each subject by asking the questions readers are likely to have first, making legal information approachable and easy to understand even to those with no legal background.