How to Write an Invoice (Wording, Fields and Examples)
Updated 2026-10-22
Write an invoice by heading it with the word Invoice, a unique number and the issue date, then your details and the client’s legal entity. List each item with a plain description, quantity, unit price and line total, add tax and the final amount due in a stated currency, give a clear due date, and finish with exactly how to pay. Specific wording matters more than design.
Write the header so it cannot be misfiled
Put the word Invoice at the top, then the number and both dates. Accounts-payable teams sort by these three fields; if they are missing, your invoice waits in someone’s inbox.
Bill the legal entity, not your day-to-day contact. “Acme Trading Ltd” gets paid. “Sarah” does not.
Word the line items so nobody has to ask
A line item should be understandable by someone who was not involved in the work. Compare:
- Weak: “Consulting” — 1 — 2,400.00
- Strong: “Website performance audit, 3 days on site, report delivered 14 March” — 3 — 800.00
The strong version survives a budget review. The weak one invites a question, and a question costs you two weeks.
Payment terms, in words that are enforceable
Terms should state a date, not a vibe. “Due on receipt” means nothing to a payment run; “Payment due by 17 March 2026 (Net 14)” does.
If you charge for lateness, say so before it happens, with a rate and a trigger: “Invoices unpaid 30 days after the due date carry interest at 8% per year, charged daily.” Check what your jurisdiction allows before you set a figure.
Tell them how to pay, specifically
This is the field most often written badly. “Bank transfer” is not instructions. Give the account details, the wallet handle, or a link that opens the payment already filled in.
Offer the method your client actually uses. A card link suits a company; a bank transfer suits a large sum; a wallet or mobile-money handle suits a client who will never open a card form. PaidSeal puts the ones you accept on the invoice as tappable options, including card, bank transfer, PayPal, Venmo, Cash App, Zelle and local methods such as mobile money.
A copy-ready skeleton
- INVOICE No. INV-0042 Issued 3 March 2026 Due 17 March 2026
- From: your business, address, tax number, email
- Bill to: client legal name, address, their reference or PO number
- Items: description · qty · unit price · line total
- Subtotal · Tax · Total due with the currency written out
- How to pay: link or account details
- Terms: Net 14. Late interest 8% per year after 30 days.
Frequently asked questions
- What do I write if I am not registered for tax?
- List the amounts with no tax line and add a short note such as “Not registered for VAT”, using whatever your country calls it.
- How do I word a deposit invoice?
- State the deposit as its own line, name the total contract value, and say the balance is invoiced on completion.
- Should I put my bank details on an invoice?
- Yes, if bank transfer is how you want to be paid. Send from a consistent address and never change the details mid-thread, which is how invoice fraud works.
- What is the best wording to get paid faster?
- A named due date, a specific line-item description and a single tappable payment method. Vague terms and no payment route are what cause delay.
Create a free invoice now