FreelanceTools

Invoice Number Generator & Tracker

Set a numbering format once, then generate the next sequential invoice number every time -- no more checking your last invoice to remember where you left off.

This tool is provided for convenience and does not constitute tax, legal, or financial advice. Check figures and documents with a qualified professional before relying on them.

Your counter is saved in this browser, so it picks up where you left off next time.

Next invoice number

INV-001

FAQ

Why does invoice numbering matter?
Sequential, gap-free invoice numbers are expected practice for bookkeeping and, in many places, a tax/accounting requirement. Skipped or duplicate numbers can look like missing income during a review, so a consistent format matters more than it seems.
Where is my counter saved?
In your browser's local storage, on this device. It isn't synced anywhere else, so using a different browser or device starts a separate counter.
Is my data sent anywhere?
No. Everything runs entirely in your browser -- nothing is sent to a server.

Related tools

Use the number on a real invoice with the Invoice Generator. See all tools.