Invoice number generator
Format
Sequential
INV-0001
Year-based
INV-2026-001
Year + month
INV-202604-01
Date + sequence
INV-20260429-1
Prefix
Start at
Padding (digits)
2 (01)
3 (001)
4 (0001)
5 (00001)
Separator
- (dash)
_ (underscore)
none
/ (slash)
Next 10 invoice numbers
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