How to Invoice as a Freelancer

Getting paid is the part of freelancing nobody teaches. The gap between hours worked and invoice sent is where money quietly leaks out. Here is the whole process, step by step — and how to make it a couple of clicks instead of an afternoon.

1. Track the hours or scope you are billing

Before you can invoice you need an accurate record of what you did: tracked time per client and project for hourly work, or the deliverable for fixed-fee work. A running record beats reconstructing the month from memory.

2. Set your rate and how you bill

Decide whether the client is hourly, per project, or on a retainer, and set the rate. Consistent per-client rates make the invoice math automatic.

3. Turn the work into line items

A clean invoice groups the work into clear line items — hours and rate, or a project fee — with a short description each. If your hours are already tracked, this is a couple of clicks, not an hour of copy-paste.

4. Include what a professional invoice needs

Your business name and contact, the client details, a unique invoice number, the issue date and a due date, itemized work with amounts, the total, and clear payment instructions. Add your EIN if relevant. Clarity is what gets you paid on time.

5. Send it and track it to paid

Email the invoice as a PDF, then track its status — sent, viewed, paid — so nothing slips. A polite reminder on anything overdue is normal and effective.

6. Record the income in your books

When the client pays, record it. If invoicing and bookkeeping live in the same tool, the payment lands in your Schedule-C-ready books automatically. Timebook does this straight from your tracked hours; time tracking is free and Pro is $29.99/month.

Frequently asked questions

How do I invoice as a freelancer?

Track the work you are billing, set your rate, turn it into clear line items, and send a professional PDF invoice that includes your details, the client’s details, a unique invoice number, an issue and due date, itemized amounts, and payment instructions. Then track it to paid and record the income. Tools like Timebook do this straight from your tracked hours.

What should a freelance invoice include?

Your business name and contact info, the client’s name and address, a unique invoice number, the issue date and due date, itemized line items (hours × rate or a project fee) with descriptions, the total due, and clear payment instructions. Include your EIN or tax details if relevant to the client.

How do I invoice for hourly work?

Track your time per client and project, then bill hours × your rate as line items. If your hours are already tracked in a tool like Timebook, the invoice is generated from them in a couple of clicks, so the totals are accurate and you are not re-entering time by hand.

Do freelancers charge sales tax on invoices?

It depends on your location and whether your services are taxable there — many professional services are not, but rules vary by state and country. Check your local rules or ask a tax professional; when in doubt, confirm before adding tax to an invoice.

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How to Invoice as a Freelancer (From Your Tracked Hours) — Timebook