Free Online Tool
Create a unique, professional invoice number in seconds. Choose your prefix, include the year and keep a running counter.
Free to use, no account required. Inveqi numbers your invoices automatically.
INV-0001, INV-0002, INV-0003. The easiest format to keep straight.
INV-2026-0001. Restarting the counter each year keeps it readable.
ACME-0001. A short client or project code makes numbers meaningful.
Free tools
Quick, useful calculators and generators for your everyday billing.
Build a professional invoice in seconds, for free.
Browse professional invoice templates you can brand.
Create a professional estimate or quote for free.
Calculate the late fee to charge on an overdue invoice.
Add up line items, taxes and discounts in one go.
Create, send and track professional invoices with recurring billing and Stripe payments — all in one secure workspace.