Clearquire 4 min read

What to include on a freelance invoice

A freelance invoice needs a unique number, both parties' details, dates, clear line items, the total owed, and how to pay. Here is the full list, field by field.

A freelance invoice has one job: tell the client what they owe, for what, by when, and how to pay. If any of those four is missing, the invoice comes back with a question instead of a payment.

This is the list to work through before you send one. It is general, not tax or legal advice. The rules where you work, and whether you are registered for VAT or a sales tax, decide the final list.

The short list

Every invoice should carry:

  • A unique invoice number.
  • Your name or business name, address, and contact details.
  • The client's name and address.
  • The date of the invoice.
  • The date the work was done or delivered.
  • A clear description of each thing you are charging for.
  • The amount for each line, and the total owed.
  • Tax, if you charge it, shown as its own amount.
  • The due date and how to pay.

In the UK, GOV.UK publishes the baseline in invoices: what they must include. VAT invoices need more than that. Check the current guidance for your country before you rely on any template.

Your details

Put the name you trade under at the top. If you are a sole trader using a business name, the UK guidance also asks for your own name and an address where legal documents can reach you. A limited company uses its full registered name.

Add an email address the client will actually reply to. A phone number and website are optional. If you are registered for VAT or a sales tax, include the registration number.

The client's details

Use the client's legal or trading name, not the first name of the person who hired you. Add their address. A large client may also give you a purchase order (PO) number. Put it on the invoice. Accounts teams often cannot pay without it.

The invoice number

Each invoice needs a number you have never used before. A simple sequence works: 2026-001, 2026-002, and so on. A prefix per client is fine too, as long as no number repeats.

Do not reuse a number to "fix" a sent invoice. Issue a new one, or a credit note, and keep both.

Dates

Three dates matter:

  • Issue date. The day you send the invoice.
  • Supply date. When the work was done or the goods were delivered. For a project, a date range is clearer.
  • Due date. The day payment is expected. "30 days" is easy to misread. A date is not.

Line items

One line per thing you charge for. Each line should read on its own:

  • A description a stranger in the client's accounts team would understand. "Homepage redesign, three rounds of revisions" beats "Design".
  • The quantity: hours, days, or units.
  • The unit price.
  • The line amount.

If you give a discount, show it on the line rather than quietly lowering the price. The client can see what they saved, and the arithmetic stays checkable. How that maths works is in how to calculate discount and tax on an invoice.

Totals

Show a subtotal, any discount, any tax, any shipping or other charge, and the grand total. The grand total is the number the client pays, so make it the most visible figure on the page.

How to get paid

This is the part freelancers leave off most often:

  • Payment terms. For example, "Payment due within 14 days of the invoice date".
  • Payment instructions. Bank transfer, card link, or whatever you accept.
  • Bank details, if you take bank transfer: account name, sort code and account number, or an IBAN for international clients.
  • A reference for the client to use, usually the invoice number.

Make one in the browser

Clearquire has a field for each item above. Seller and client details, a VAT or tax number for both, invoice number, PO or reference, issue and due dates, line items with quantity, unit price, an optional discount and tax rate, a shipping or other charge, payment terms, payment instructions, bank details, notes, and a footer.

There is no separate supply date field. Put it in the line description, or in the additional notes.

The PDF is created in your browser. There is no account, and invoice details are not uploaded. Choose the Minimal or Modern A4 template, add your logo if you want one, and download the file. Clearquire does not send the invoice for you. You email it yourself.

Checklist

  • Unique invoice number.
  • Your name, address, and email. Tax number if registered.
  • Client's name and address. PO number if they gave one.
  • Issue date, supply date, and due date.
  • One clear line per charge, with quantity and unit price.
  • Discount and tax shown as amounts, not hidden.
  • Grand total, easy to find.
  • Payment terms, how to pay, and the reference to use.

If you want to know what happens to your data while you fill it in, read how to create an invoice PDF without an account.