Contract Glossary

Addendum

Definition

An addendum is a new document you tack onto an existing contract to add terms that weren't in the original. Both parties sign it, and it becomes part of the deal, no need to rewrite the whole contract.

In Practice

Say you signed a 6-month consulting agreement, and now the client wants you to handle their social media too. Instead of drafting a new contract, you write an addendum that adds the social media scope and adjusts the fee from $3,000/month to $4,500/month. The original contract stays intact, the addendum just bolts on the new stuff.