Business Tools
Invoice Number Generator
Create sequential-looking invoice identifiers from a prefix, date and counter.
✓ Free
✓ No account
◉ Runs on this device
Business Tools
Powering up the tool…
TOOL INVOICE-NUMB
What this tool does
About the invoice number generator
The generator previews a repeatable format and lets you copy a batch. It stores no accounting ledger, so you remain responsible for uniqueness and local record rules.
How to use it
- Choose a pattern — prefix-year-counter is the dependable classic.
- Set the prefix, date fields and starting counter.
- Preview and copy a batch of up to 100.
- Record what you issued in your own books; the generator deliberately keeps no ledger.
Useful for
- Pick a sane invoice-number format when starting to freelance.
- Generate the next batch of identifiers in an established pattern.
- Move from “Invoice 1, 2, 3” to a format that doesn’t advertise how new you are.
Straight answers
Invoice Number Generator FAQ
Do invoice numbers have to be sequential?
Most jurisdictions require unique, and many require sequential-without-gaps for tax purposes. Know your local rule; the generator produces clean sequences but your accounting records are the authority.
Why start the counter above 1?
INV-2026-0001 tells every client they are your first. Starting at a higher number is a common, harmless convention — just be consistent from then on.