Tax & Business Utilities
Invoice Number Generator
Generate GST-compliant invoice number series with FY-aware prefixes.
Live Free, no sign-up
Use Invoice Number Generator
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How to use it
- Set prefix, financial year and padding.
- Choose how many numbers.
- Copy or download as CSV.
About this Invoice Number Generator
GST rules require invoice numbers to be unique within a financial year and follow a consistent series. Set a prefix, the financial year, padding and a count, and copy the list or save it as a CSV.
The tool only formats numbers. Check the current length and format rules on the GST portal, and never reuse a number already issued from your books.