References the original work
An additional invoice ties the extra charge to the original project or invoice, so the client sees exactly what it adds to and why. No confusion about a surprise charge.
Free additional-invoice generator
Bill the extra work. Keep it clean.
When a project grows past the original quote, an additional invoice is how you bill the extra without surprising the client at the end. Reference the original work, itemize the addition, and download a professional PDF in under a minute. Free, no login.
Bills the scope change cleanly
Itemize the extra revisions, the added deliverable, or the scope change, with a clear note on what it covers. The kind of record that prevents a billing dispute later.
No login, downloads as a PDF
Fill it in, see the live preview, download the branded PDF, and send it the same day the client approves the extra work. No account required.
Common questions
The short answers.
What is an additional invoice?+
An additional invoice bills for work that was not in the original quote, such as extra revisions, added scope, or a change order. It references the original project so the client understands it adds to existing work rather than replacing it.
How do I invoice a client for extra work?+
Name the extra work the moment it is requested, quote it in writing before you do it, get a quick approval, then send an additional invoice that references the original project and itemizes the addition. Billing it separately as it happens prevents a surprise on the final bill.
Should extra work be a separate invoice or added to the final one?+
A separate additional invoice, sent as the extra work is approved, is almost always better. Bundling scope changes into the final invoice is the most common cause of billing disputes, because the client is surprised by a total higher than the original quote.
What is the difference between an additional invoice and a change order?+
They are closely related. A change order is a formal, signed modification to a contract that spells out the new scope, cost, and timeline. An additional invoice is the bill for that extra work. On smaller freelance jobs the additional invoice often serves both purposes.
How much should I charge for extra work?+
Bill extra work at your normal rate, the same as the original project. It should not be discounted to make the ask easier, and it should not be inflated as a penalty. Same rate, same math, applied to the additional scope.
Related reading: How to invoice a client for extra work →
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