How to Invoice as a Virtual Assistant
Virtual assistants juggle inboxes, calendars, research and small projects for several clients at once. Learning how to invoice as a virtual assistant is mostly about grouping tasks so the client sees a week of support, not a chaotic list of 40 tiny jobs. This guide covers hourly VA billing, monthly retainers and how to send a PDF that matches your time log.
Group Tasks by Outcome
Do not turn the invoice into a minute-by-minute diary. Group related work: inbox and calendar support, travel booking, research, or a one-off project such as a spreadsheet clean-up. Add the date range, the hours and the rate. If the client wants the full log, attach it as a second file instead of stuffing it into the invoice.
Our free invoice maker supports multiple line items, so you can keep the PDF readable. For numbering and dates, follow how to number your invoices.
| Group | Example line |
|---|---|
| Admin support | Inbox and calendar, 8–12 June, 6 hours |
| Research | Vendor comparison sheet, 3 hours |
| Project | CRM contact clean-up, flat fee as agreed |
| Retainer | June VA retainer, 20 hours included |
Retainers and Extra Hours
Many VAs sell a monthly hour bundle. Invoice the retainer at the start or end of the month, whichever you agreed, and invoice extra hours on a separate line. See monthly retainer invoicing and recurring invoices if you bill the same client every month.
Tip: Agree how you round time before you start. Billing every 15 minutes is easier to explain than billing every stray minute.
Send It on a Fixed Day
Pick one weekday and invoice every client on that rhythm. Attach the PDF, mention hours used and the due date, and keep payment details on the invoice. If a client is late, use a calm reminder from our payment reminder email guide.
A VA invoice should look like a week of support, not a dump of every click you made.
Watch out: Some clients treat assistants like employees. Your invoice does not decide employment status. Check local rules if you are unsure.
Frequently Asked Questions
Should I invoice unused retainer hours?
Only if the contract says unused hours are billed or rolled over. State the rule on the invoice so there is no surprise.
Can I invoice two clients on the same day?
Yes. Use a different invoice number for each client and never reuse a number.
Do I include software subscriptions I use?
Only if the client agreed to pay for a tool. Otherwise those costs sit in your own overhead and should be reflected in your rate.
Log the week, then bill it. Create a free VA invoice in a few minutes.