Generate a sequential or dated invoice numbering scheme (prefix, year, sequence) that stays clean for bookkeeping and audits.
Free to use with no account. When you want to send the result by text, take a card payment, or keep a record of every job, the same numbers carry straight into Glo Invoice.
What makes a good numbering scheme. Sequential, never reused, and readable — a prefix for the business or job type, the year, then a zero-padded sequence: GLO-2026-0148.
Worked example. Starting at 1001 instead of 1 avoids looking brand new. Adding the year makes year-end bookkeeping and audit lookups fast.
Why gaps and duplicates matter. Duplicate numbers break your records and confuse customers with two different invoices carrying one reference. Gaps raise questions during an audit.
Common mistakes. Restarting at 1 each January without a year in the number; using the customer name as the number; letting two people number invoices by hand.
Frequently asked questions
Can invoice numbers include letters?
Yes. A short prefix is fine as long as the numeric part stays sequential.
What if I void an invoice?
Keep the number and mark it void. Deleting the record and reusing the number is what creates audit problems.
Do estimates and invoices share numbering?
Keep them in separate series — EST- and INV- — so a quote is never mistaken for a bill.
