How to Invoice as a Freelancer: Complete Guide (2026)
Everything freelancers need to know about creating professional invoices, getting paid on time, and managing cash flow. Includes templates and real examples.
You did the work. Now you need to get paid. This guide covers everything a freelancer needs to know about creating professional invoices that actually get paid on time.
The 7 Things Every Invoice Needs
- Your business name and contact info — name, email, phone, address
- Client name and email — who's paying
- Invoice number — sequential, unique (INV-0001, INV-0002...)
- Date and due date — "Net 15" or "Net 30" is standard
- Line items with descriptions — what you did, how many hours or units, at what rate
- Total amount due — with tax if applicable
- Payment instructions — how and where to pay
How to Set Your Rates
The #1 invoicing mistake freelancers make: undercharging. Research your market rate on sites like Glassdoor, PayScale, or industry forums. Then add 20% — that covers self-employment tax, health insurance, and the days you spend on non-billable work.
When to Send the Invoice
Send the invoice the same day the work is delivered. Not next week. Not at the end of the month. The same day. Every day you wait adds 2-3 days to the payment timeline.
How to Follow Up
- Day 1: Send invoice via email AND text
- Day 7: Friendly reminder ("Just making sure you received my invoice")
- Day 14: Direct follow-up ("Invoice #X is now 2 weeks past due")
- Day 30: Final notice with late fee warning
SendPaid automates all of this. Set your reminder schedule once — the system handles the rest.
Tools That Help
Don't use Word docs or Google Sheets. Use a tool that:
- Sends invoices via email and text
- Accepts online card payments
- Tracks who viewed your invoice and when
- Sends automatic payment reminders
- Keeps a record for tax time