Record a change to the work, and the template works out the new contract price. Preview it as you type, then download a PDF or print it. No account needed.
Updated
The short answer: a change order records what is changing, what it does to the price, and what it does to the schedule. Both parties sign it before the changed work starts.
The template below adds, credits or leaves the price alone, and shows the new contract price. It is a template to adapt, not legal advice.
Anything you leave blank prints as a blank to fill in by hand. Saved in this browser only.
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A contract is for $10,000, with $500 of earlier approved changes. The client adds work worth $1,500. The new contract price is $10,000 + $500 + $1,500 = $12,000, before GST/HST.
A change can cost more than the same work would in the original job, because it can interrupt the schedule. Check your number with the markup calculator. If you bill in stages, carry the change into your next construction invoice. The original price usually comes from your bid or your contract.
A signed document that changes an existing contract. It records the change to the work, the price and the schedule.
Any time the work moves away from the original contract, such as an added item, a removed item, or a problem found on site. It is best to record it before you do the work.
Yes. Choose the credit setting and the amount comes off the contract price.
Put it in writing as soon as you can. A text is better than nothing, but a signed change order is clearer. The template accepts a signed photo or scan if your contract allows it.
The template shows amounts before tax and says so. Add GST/HST when you invoice the change, if you are registered.
Yes. Fill it in, preview it on the page, then download the PDF or print it. You do not need an account, and your draft is saved in this browser only.
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Not ready? Try the free invoice generatorThis page is general information, not financial, legal, or tax advice. We gathered it from public sources (banks, payment providers, government agencies such as the CRA, and published industry rates), and it reflects our understanding when it was last updated. Rates, limits, fees, and rules change without notice, and your situation may differ from the general case.
Before you rely on anything here, do your own due diligence: confirm the details with the original source, and check that they are still current. For advice about your own finances, taxes, or legal position, hire a qualified professional such as an accountant, lawyer, or financial advisor. See our Terms for the full disclaimer. Last updated October 31, 2026.