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Glossary

What is a contract extension?

A contract extension continues an existing contract for an extra period, usually under an extension option, sometimes with changes to terms such as price.

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How an extension works

When a fixed term contract nears its end, the parties can let it expire, sign a new contract, or extend the existing one. An extension keeps the current agreement and pushes the end date out. It is often used when the work is not finished on time or when both sides want more time before deciding on a new deal. Many contracts include an extension option that one party can exercise by notice, and the parties may agree other changes, such as price, at the same time.

Extension checklist

  • Check the extension clause: who can exercise it, by when and for how long.
  • Review how the supplier has performed and what the contract has cost.
  • Decide whether any terms should change, and agree them in writing.
  • Record the extension as a signed amendment or addendum linked to the original.
  • Update the end date, notice dates and owners on the contract record.

How Aavenir handles it

Contractflow tracks end dates and option windows, opens a decision before the window closes and drafts the extension from an approved template. The new end date flows to renewal tracking, and renewal management shows performance and spend next to the decision.

Keep reading

Contract renewal Contract renewal is extending a contract for a new term, either automatically under an auto renewal clause or by a decision and new agreement before the current term ends.Read more Contract expiry Contract expiry is the end date of a contract, when the rights and obligations it sets stop applying unless the contract renews, is extended or is replaced.Read more Contract addendum A contract addendum is a document added to an existing contract that adds new terms or detail, such as a new service, location or schedule, without rewriting the original agreement.Read more

Frequently asked questions (FAQ)

Common questions

What is the difference between a contract extension and a renewal?

An extension pushes out the end date of the existing contract, often for a short period. A renewal starts a new term, either automatically or by agreement, and is more likely to come with renegotiated terms. Read about contract renewal.

Do you need a written agreement to extend a contract?

In most cases, yes. Even where the contract gives an extension option, exercising it by written notice and recording it in a signed amendment avoids disputes about whether, and on what terms, the contract continues. Read about contract addendums.

Can the terms change when a contract is extended?

Yes, if both parties agree. Price, scope or service levels are often adjusted at the same time, and the changes should be written into the extension document rather than agreed informally. Record any changed terms on the contract record so invoices and renewals follow them. See Contractflow.

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See your contracts run on one record.

  • 1 A 30 minute walkthrough Built around your team, whether that is procurement, legal, IT or finance.
  • 2 Your contracts, not ours Bring a few sample agreements and watch Aavenir AI extract and review them.
  • 3 ServiceNow or standalone We show the deployment that fits the systems you already run.

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