Invoicing clients shouldn't need accounting software. Fill in what you delivered, set your terms, and send a clean, professional PDF — whether you bill by the project, by the hour, or per deliverable.
| Description | Qty | Rate | Amount |
|---|
Your name (trading name is fine — a registered company isn't required), contact details, a unique invoice number, the client's details, an itemized list of what you delivered with prices, the total due, and payment terms including how you accept payment.
In most countries you can invoice as a self-employed individual using your own name — just make the invoice clearly from you, with your contact details and a consistent numbering scheme (e.g. MC-2026-001). Tax treatment varies by country, so check your local rules or ask an accountant once you get going.
State a due date and a late-fee policy on every invoice — for example "5% after 30 days" — and send a polite reminder the day after it's late. A professional-looking invoice with clear terms gets paid noticeably faster than a vague one.
Freelancers lose money to disorganization, not to bad clients. A workflow that survives growth looks like this:
For any project over roughly a week of work, split the money: 30–50% deposit before you start, the balance on delivery, or milestone billing for longer engagements. The deposit does two things — it funds the work and it proves the client is serious. Clients who balk at a reasonable deposit are showing you the payment behavior to expect later.
Put the deposit structure on the proforma or in the proposal, then reference it in each invoice's description so payments reconcile cleanly.
Most late payments are neglect, not malice — the invoice arrived, then life happened. The fix is a short, friendly escalation ladder: a polite nudge on day 1 past due; a firmer note at day 7 restating the amount, due date and original delivery; at day 14, pause further work and say so plainly. Attach the PDF every time — re-sending removes the "I can't find it" excuse.
And prevent what you can: late-fee terms on every invoice, stated once, calmly, change payment behavior before it becomes a problem.
A milestone invoice for a freelance illustration project:
The milestone reference tells the client exactly where this sits in the agreed scope; the deposit note prevents double-counting at project end. Short, specific, payable.