Consulting Invoices That Look Like Your Fees Are Justified
A consultant's invoice is a brand touchpoint — it lands in the same inbox as your recommendations. BillFast produces a document that looks like it came from a firm, not a template mill.
Bill retainers monthly with one-click duplication, add day-rate line items, and track which clients have paid without opening a spreadsheet.
Create your free invoice →- Monthly retainer billing via one-click Duplicate
- Outstanding dashboard shows exactly who owes you what
- Share as a link for fast approval, then PDF for their records
Frequently asked questions
How do monthly retainers work?
Create the first invoice, then each month open History → Duplicate. The number increments, the date updates, and you download — 20 seconds.
Can I track unpaid invoices?
Yes. Each invoice is Unpaid, Paid, or automatically Overdue, and your dashboard totals what's outstanding.
Can I add expenses?
Add each expense as a line item with quantity 1, or group them ('Travel & accommodation — March').
Do I need to install anything?
No. BillFast is a web page that also works offline after your first visit.