An invoice, drafted fast, with the arithmetic done in code
Add a client and a line item, or describe the work in plain English and let it draft the line items for you. Either way, the subtotal, tax and total are computed by code, never by a language model, and you can edit every field before anything is finalised.
The plain-English drafting screen and sending an invoice by email are still being built. Everything else described here already runs.
What it does
Built so a total is a fact, not a suggestion
Totals computed in code
Subtotal, tax and total are calculated by ordinary arithmetic on the amounts you enter, in integer cents. There is no path by which a model's output becomes the number on the invoice.
Edit before anything is final
Every field on a draft invoice, client, line items, tax, currency, is editable up until it's sent. A sent invoice can't be silently altered afterwards.
A real PDF
Generated on our server, ready to attach or download, with your tax and locale settings applied.
Client and invoice records
Your clients and every invoice you've drafted, in one searchable place.
One step back
A scanned expense in scanmydocz can become an invoice line here
fastbillgen and scanmydocz share one account. Carry a receipt across as a line item in one step, confirming what transfers before the invoice is created.