How to invoice as a freelancer

Invoicing is how freelance work turns into income, so it's worth getting right. Once you have a system, each new invoice is a short routine rather than a chore.

Start with the essentials

Every freelance invoice needs your details, the client's details, a unique number, the dates, itemised work, totals, and payment terms. The freelance invoice template lays it all out.

The legal minimum depends on where you work. In the UK, gov.uk lists what an invoice must include: a unique number, the client's name and address, a description, the supply date, the invoice date and the amounts. As a sole trader you also show your name and any business name, plus an address where legal documents can reach you if you trade under a business name. In the EU, once you're VAT-registered, your invoices follow article 226 of the VAT Directive, which adds your VAT number, the VAT rate and amount, and the client's VAT number when the reverse charge applies.

Know whether you charge VAT

In the UK you must register for VAT once your taxable turnover for the last 12 months goes over £90,000. Once registered, you include VAT in the price of your goods and services at the correct rate. Elsewhere, check your own tax authority's threshold. If you sell services to businesses in other EU countries, you usually don't charge your own VAT (Your Europe); see the VAT reverse charge.

If you're a US freelancer, a client may ask you for a Form W-9 before paying. The IRS describes it as the form you use to give your correct taxpayer identification number to someone who must file an information return reporting income paid to you.

Agree rates and terms upfront

Confirm your rate and payment terms before starting — not on the invoice. That avoids surprises and makes the invoice a formality rather than a negotiation. New to terms? Read payment terms explained.

For a fixed-price job, send an estimate first; once the client approves it, it becomes the basis for your invoice. On bigger projects, ask for a deposit or stage payments so you aren't funding the whole job yourself.

Bill the way you work

• Hourly — list the hours per task or per week with your rate, so the client can check them. See the hourly invoice template.
• Fixed price — one line per deliverable, using the same wording as your estimate.
• Retainer — the same fee each period for agreed availability or a block of hours. Say which period a retainer invoice covers.

Invoice promptly and consistently

Send invoices as soon as work is delivered, or on a set day each month for ongoing work. A regular rhythm makes your income easier to predict and your records easier to keep. For monthly work, a recurring invoice saves you recreating the same invoice each time.

Number every invoice in one unbroken sequence and never reuse a number. If you're VAT-registered in the UK there's also a deadline: you normally have to issue a VAT invoice within 30 days of the supply (VAT Notice 700/21, section 3.1).

Follow up when payment is late

Send a polite reminder soon after the due date, then a firmer one that quotes your terms. Between businesses you can usually claim statutory interest and a fixed recovery charge on late payments, in the EU under the Late Payment Directive and in the UK under the late payment rules. Payment terms explained has the rates. If you email invoices from Invoice Forever, you can opt in to automatic overdue reminders.

Look professional

A branded invoice with your logo signals that you're serious. Upload a logo once in a free Invoice Forever account and it appears on every PDF. It's free forever — you can make your first invoice now.