Billing & invoicing · Updated October 31, 2026
Time that tracks itself
Auto-calculate builds a row for each day you logged notes, timed from your first to your last entry. Adjust travel to and from, case time, idle time, breaks and report writing in hours and minutes. The auto-tracked times are kept as an unchangeable reference beside your billed times.
Mileage and receipts
Enter mileage per day. Photograph a hotel, meal, fuel, parking or toll receipt on your phone, enter the amount, and it's added to that day's expenses and the next invoice, with the image kept in the case file.
Invoices in one click
- Hourly, flat fee per serve, per search or flat fee, depending on the case type
- Expense markup and sales tax
- Payment terms from due on receipt and 24 hours to Net 45, or your own
- Your letterhead and logo on the PDF
- Send the invoice to your client by email
Frequently asked questions
Do I need separate billing software?
Not for case billing: PIwitness tracks time, mileage and expenses per case and creates and sends invoices. Many investigators still keep their general accounting in their usual bookkeeping software.
Can I change the tracked times?
Yes. Every billing field is editable. The automatically tracked times stay as a reference so the original record is never lost.