Invoice Your Clients in Less Time Than a Status Update
You run other people's lives — your own invoicing should run itself. BillFast remembers your details, auto-increments your invoice numbers, and duplicates last month's invoice in one click.
Bill hourly packages ('40-hour block'), per-task bundles, or flat monthly retainers, in your client's currency.
Create your free invoice →- One-click monthly duplication with auto-incrementing numbers
- Hour-block and task-bundle friendly line items
- Paid/Unpaid tracking so following up doesn't need a spreadsheet
Frequently asked questions
I bill the same thing every month — how fast is that?
History → Duplicate → Download. About 15 seconds, number and date update themselves.
Can I invoice US clients from the Philippines or India?
Yes — set the invoice currency to USD (or any of 46 currencies) regardless of where you are.
Do I need a business registration?
BillFast doesn't require any — you control every field, so invoice as an individual or a registered business.
Can my client view the invoice without downloading?
Yes, send the share link — it opens in their browser as a live document.