A change order template that ends the “we discussed it on site” argument.

Once both parties sign it, a change order amends the original contract, and courts generally treat it that way. That is exactly why the form has both signature lines and says work does not begin until it is signed. This is general information, not legal advice; contract law is provincial and state law.

Then you have a decision, not a document. Doing the work without a signed change order means arguing about payment later with nothing in writing. At minimum, send the change order by email and keep the client's written reply.

Yes. A credit for removed scope is entered as a negative line, the total of the change is negative, and the revised contract value goes down. Recording credits the same way as extras keeps the running total honest.

Most contractors apply the same overhead and profit markup as the original estimate, and say so in the contract. Some add a small administration charge for changes requested after work starts. Whatever you do, the priced form shows it.

Yes, on the Pro plan: a change order is drafted from the estimate, priced with tax, sent for e-signature, and the signed changes roll into a revised contract value. The free plan builds and prints estimates; the template here is free for anyone.