Contract Amendment Template and Filled Sample
By Anirudh Menon, Viaclause editor
A copy-ready contract amendment template, six ready wordings for common changes, a filled sample with invoice math, and the legal checks before signing.
A contract amendment is a short document that changes specific terms of a contract you have already signed. It names the original contract, states the exact change and the date it starts, confirms everything else stays the same, and is signed by the same parties.
Copy the template below, fill in the brackets, and pick the wording for your change from the six options under it. A filled sample follows.
- Use an amendment when the same parties change a term during the current contract.
- Use something else when a new party takes over, the contract has expired, or you are settling a dispute. See the comparison table further down.
Contract amendment template
Free to copy. No signup. Select the text in the box, paste it into your editor, and replace every [bracket].
AMENDMENT NO. [1] TO [AGREEMENT TITLE]
This Amendment is made on [date] between [Party A legal name] ("[Short name A]") and [Party B legal name] ("[Short name B]").
1. Original agreement. The parties signed [agreement title and number] dated [date] (the "Agreement"), [as amended on [dates of earlier amendments] / with no earlier amendments].
2. Changes. From [effective date], the Agreement is changed as follows:
(a) [Section number and title] is deleted and replaced with:
"[full new wording]"
(b) [Add or delete further sections, one per letter.]
3. Everything else stays the same. Except as changed above, the Agreement remains in full force. If this Amendment conflicts with the Agreement, this Amendment controls for the changes it states.
4. Earlier periods. These changes apply from the effective date only. Work performed and amounts invoiced before that date are not affected [unless stated here: ________].
5. Signatures. This Amendment may be signed in counterparts and electronically. Each signer confirms they are authorized to sign for their party.
[Party A legal name]
Signature: ________________
Name and title: ___________
Date signed: ______________
[Party B legal name]
Signature: ________________
Name and title: ___________
Date signed: ______________
Before you send it, check the amendment clause in your original contract and follow it (see Legal checks below). Record the handover in your contract administration plan.
Pick the wording for your change
Paste the line you need into section 2 of the template. Replacing a whole clause is clearer than editing single words.
1. Change the price
Section [4] (Fees) is replaced with: "From [date], Customer will pay [amount and currency] per [month/unit]. All other payment terms in Section [4] remain unchanged."
2. Extend the term
Section [2] (Term) is replaced with: "This Agreement continues until [new end date] unless terminated earlier under Section [x]."
3. Change the scope or deliverables
Schedule [A] is replaced with the attached Schedule [A-1], effective [date]. Schedule [A-1] lists all services from that date.
4. Change payment terms
In Section [5], "30 days" is replaced with "45 days" for invoices dated on or after [date].
5. Delete a clause
Section [9] ([title]) is deleted in full from [date]. References to Section [9] elsewhere in the Agreement no longer apply.
6. Add a new clause
A new Section [12A] ([title]) is added after Section [12]: "[full new wording]"
Tip: when you replace a clause, copy forward any part of the old clause you still want.
Filled sample: a price and scope change
Fictional companies. Illustrative only. The original fee was $2,000 a month for one dashboard and one call. This amendment adds a second of each for $600 more a month from July 1.
AMENDMENT NO. 2 TO REPORTING SERVICES AGREEMENT R-14
Made on June 20, 2027 between Cedar Analytics LLC ("Supplier") and Harbor Supply LLC ("Customer").
1. Original agreement. Reporting Services Agreement R-14 dated January 1, 2027, as amended on March 1, 2027.
2. Changes. From July 1, 2027:
(a) Section 2 is replaced with: "Supplier will provide two reporting dashboards and two review calls per calendar month through December 31, 2027."
(b) Section 4 is replaced with: "Customer will pay $2,600 per calendar month. Supplier invoices on the first day of each month. Each invoice is due 45 days after its date."
3. Everything else stays the same, including the December 31, 2027 end date. No existing claim is released.
4. Earlier periods. January to June 2027 services and invoices are not affected. No credit or retrospective adjustment is agreed.
5. Signatures.
Cedar Analytics LLC: Alex Reed, Managing Member (fictional), signed June 20, 2027
Harbor Supply LLC: Morgan Lane, Managing Member (fictional), signed June 20, 2027
Why section 4 repeats "45 days": the March amendment changed payment terms to 45 days. Replacing Section 4 without that line would have quietly restored the old term. Use the statement of work template to record the scope baseline you are changing.
Which invoices change?
| Service months | Monthly fee | Total |
|---|---|---|
| January to June (unchanged) | $2,000 | $12,000 |
| July to December (amended) | $2,600 | $15,600 |
| Full year | $27,600, up from $24,000 |
The service month decides the price, not the day the bill arrives: a June invoice sent in July is still a $2,000 charge. Update the service plan, purchase order and billing system together. If records conflict, see our order form versus master agreement guide.
Advanced: a mid-month changeFictional alternative: the $600 increase starts July 17, 2027, prorated by calendar days and rounded once to cents. That formula is an agreed choice, not a legal rule; a fixed transition price also works. Write down whichever you pick.
July days at the new fee: July 17 to 31 = 15 of 31 July fee: 2000 + (600 x 15 / 31) = 2290.32 USD August to December: 2600 USD each month
If a July invoice was already issued, say whether it is replaced or credited.
Amendment, addendum, renewal or restatement?
| Document | Use it when | What it does |
|---|---|---|
| Amendment | Same parties, contract still running, specific terms change | Replaces or deletes named clauses. The rest stays. |
| Addendum | You are adding material, such as a new schedule | Adds terms. If it also changes terms, say so in its wording, because the label alone does not decide that. |
| Renewal | The term is ending and you want a new period | Starts a new term, often with an updated price. See what to include in an agreement renewal. |
| Amended and restated agreement | Many changes or several earlier amendments | One clean document that replaces the original and all amendments. |
| Novation or assignment | A different company takes over | Changes who the parties are. Compare assignment and novation. |
Common mistakes
- Replacing a clause from the wrong version. Put the original agreement and every signed amendment in date order before drafting.
- Changing the fee but losing a payment term. Carry forward earlier changes, as the filled sample does with the 45-day term.
- Mixing up three dates. Signing date, effective date and invoice date are different facts. Record each honestly and never backdate a signature.
- Treating internal approval as agreement. A budget sign-off does not show the other party agreed. Keep the signed amendment.
Legal checks before you sign
- Your contract's amendment clause comes first. Cornell LII describes contract modification as the parties agreeing to amend terms such as price or delivery schedule (LII Wex: modification). Your contract usually says how.
- California: a contract in writing may be modified by a contract in writing, and some oral routes also exist (Cal. Civ. Code 1698).
- Sale of goods: under the model UCC, a modification needs no consideration, and a signed agreement that bans changes except by signed writing cannot be changed otherwise (UCC 2-209). Check your state's version.
- E-signatures: in interstate commerce, a signature or contract cannot be denied legal effect solely because it is electronic (15 U.S.C. 7001).
- England and Wales: courts give effect to a clause requiring set formalities, such as writing and signatures, for a variation (Rock Advertising v MWB [2018] UKSC 24, para 10).
- India: if the parties agree to substitute, rescind or alter a contract, the original need not be performed (Indian Contract Act, section 62).
General information. For high-value or regulated contracts, have a lawyer review the final amendment.
Frequently asked questions
Do both parties have to sign a contract amendment?
Usually yes, and many contracts require it. Some laws, such as California Civil Code section 1698, recognize other routes. A draft sent for signature is not yet an agreed change.
Can the effective date be different from the signing date?
Yes. In the sample, both sign June 20 for a change that starts July 1.
Can I amend just one clause?
Yes. Replace that clause in full and check any other clause that refers to it.
What is the difference between an amendment and an addendum?
An amendment changes existing terms. An addendum usually adds new material. If your addendum also changes terms, say so in its wording.
How many amendments are too many?
There is no fixed limit. When it gets hard to tell which version of a clause applies, sign one amended and restated agreement instead.
Can I amend an expired contract?
Not with this template. An expired contract usually needs a renewal or a new agreement. Check which obligations still survive first.
Next step
Copy the template, fill it in, and send the same final version to every signer. After signing, give the new terms to delivery and billing, and file the amendment with the original contract.
If a term turns out to be unenforceable rather than simply outdated, our severability example separates removal from agreed replacement.
Sources
- Cornell LII Wex, modification (last reviewed July 2023).
- California Civil Code section 1698: modification of written contracts.
- Uniform Commercial Code section 2-209: modification, rescission and waiver, model text published by Cornell LII.
- 15 U.S.C. section 7001: electronic records and signatures, statutory text published by Cornell LII.
- Rock Advertising v MWB [2018] UKSC 24, Supreme Court judgment, May 16, 2018.
- Indian Contract Act, 1872, section 62, India Code.