An addendum adds new terms to a signed contract without rewriting the original. It’s a clear, traceable way to expand an agreement as conditions evolve.
Amendment vs addendum
Amendments change existing clauses.
Addendums introduce new ones without touching what’s already agreed.
Example: you have a contract for web development. Later, you decide to include long-term support. Instead of rewriting the contract, you add a signed addendum with those terms.
When it’s used
- Expanding scope of work
- Adjusting deadlines
- Updating payment terms
- Adding attachments (e.g. technical specs, NDAs)
This format is especially useful in multi-stage or ongoing projects.
Document structure
Every addendum includes:
- a title and date
- reference to the original contract
- new clauses
- both parties’ signatures
It becomes effective only after signing.
Signing process
Need a fast and secure way to sign? Use DocuChain to create and complete addendums online — no printing, no scanning, just full traceability.
Contract flexibility
Addendums give structure to evolving agreements. You don’t lose the original deal — you build on it, with full clarity and legal backing.
Final step
To adjust a signed agreement without starting over, use an addendum. With DocuChain, you can sign it instantly — securely and from anywhere.
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