How to invoice as a freelancer
Most freelance invoices are paid late for boring, fixable reasons. Here's what goes on the page, what to charge for, and how to make paying you the path of least resistance.
The nine essentials
Strip away the design and every valid freelance invoice contains the same nine things. Miss one and you've handed the client's accounts payable a reason to park it.
- The word "Invoice." Explicitly. It's what separates this document from a proposal or a statement, and some finance systems genuinely won't process a document that doesn't say it.
- A unique invoice number. Sequential, no gaps you can't explain. More on numbering.
- The invoice date. The clock on your payment terms starts here.
- The due date. Write the actual date, not "Net 30". "Due 20 August 2026" is harder to misread and harder to argue with.
- Your details. Trading name, address, email, and your VAT or tax registration number if you have one.
- The client's details. The legal entity you contracted with, spelled as it appears on the contract — not your day-to-day contact's first name.
- Itemised work. Description, quantity, unit price per line.
- Totals. Net subtotal, tax broken down by rate, anything already paid deducted, and the final amount due — with the currency stated.
- How to pay. Bank details, a payment link, or a QR code. Somewhere obvious.
Four details that get you paid faster
These aren't legally required. They're the ones that change how quickly the money arrives.
1. The purchase order reference
If the client issued a PO number, put it on the invoice. Many corporate finance systems match invoices to POs automatically and reject anything unmatched — silently, without telling you. This is the single most common reason a freelance invoice sits unpaid at a larger company.
2. A specific due date
"Payment due within 30 days" requires the reader to do arithmetic. A date on the page doesn't. Ambiguity always resolves in favour of paying later.
3. Line items a non-expert can understand
The person approving your invoice often isn't the person who hired you. "Strategy workshop — 1 @ €450" is approvable by someone with no context. "Phase 2 deliverables" is a question, and questions take a week to answer.
4. A payment QR code
Removing the retype-the-IBAN step measurably shortens the gap between "read the invoice" and "paid the invoice". How to add one.
Choosing payment terms
| Terms | Works for | Watch out for |
|---|---|---|
| Due on receipt | Small jobs, individuals, new clients | Larger companies simply can't process this; their cycle is fixed |
| Net 14 | Most freelance work | A reasonable default that few clients push back on |
| Net 30 | Corporate clients | Often their minimum — but confirm it's 30 days from invoice date, not from month end |
| 50% upfront | Large projects, new clients | Needs to be agreed in the contract, not sprung on the invoice |
If you took a deposit, show it. Invoice the full amount, then deduct the prepaid sum before the total due — so the invoice records the whole engagement, and the client sees exactly what remains.
Sending it as a PDF
In Quick Invoice Generator PDF
- Set your company up once — name, address, tax number, logo. Reused on everything you send afterwards.
- Save each client the first time you invoice them. After that they're one tap, and their address fills the Bill To block automatically.
- Add line items with quantity, unit price and VAT rate. Subtotals, per-rate tax and the total due calculate themselves.
- Add the PO reference and payment terms in the additional fields, and a deposit under prepaid amount if you took one.
- Preview, then share as a PDF through Mail or Messages. Mark it Sent.
- Next month, duplicate it. Change the dates and the hours instead of rebuilding it.
The free plan covers 10 invoices created and 3 shared per month — enough for a lot of freelancers. Pro removes both limits.
When it goes past due
Mark invoices Sent when you send them and Paid when the money lands. It takes a second and it's the only way the invoice list stays honest about who owes you.
Then a simple rhythm, and stick to it:
- Day after due: short, friendly, assume it's an oversight. Reattach the PDF — you'd be surprised how often it was never forwarded to finance.
- One week past: ask directly who handles payments and whether the invoice reached them. This usually surfaces the real blocker.
- Two weeks past: a firmer note referencing your agreed terms.
At the end of the month, the Reports tab shows what you invoiced, what's been paid, what hasn't, and which clients the revenue came from — which is usually the moment you notice that one client is quietly always late.
Send a professional invoice today
Company details once, clients saved, totals calculated. Free to download with no account.
Free plan: 10 invoices, 3 shares a month · No account · No ads
Frequently asked questions
What must a freelance invoice include?
The word "Invoice", a unique invoice number, the invoice date and due date, your business name and address, the client's legal name and address, itemised work with quantities and rates, any applicable tax broken down by rate, the total due, and how to pay you. If you're VAT-registered, your VAT number is required too.
Should a freelancer send invoices as PDF?
Yes. A PDF renders identically on every device, prints correctly, and can't be accidentally edited by the recipient. Never send an editable spreadsheet or word-processor file as your final invoice.
How soon should I invoice after finishing work?
Immediately — same day if you can. Payment terms only start counting from the invoice date, so a week's delay in sending is a week added to when you get paid. It also lands while the work is still fresh in the client's mind, which reduces queries.
Do I need to charge VAT as a freelancer?
It depends on your country, your turnover and your registration status — this is genuinely a question for your accountant, not an app. What matters mechanically is that if you do charge it, each line item needs the correct rate and the invoice must show the tax broken down per rate. See the guide to multiple VAT rates.