The core details
These belong on almost every invoice, whatever you sell. Leave one out and you invite a question that holds up payment.
Your details
Your business or trading name and a way to reach you, at the top. If you are registered for tax, add the registration or company number your local rules ask for.
The customer's details
Bill the right entity. Use the customer's legal or billing name and address, and if they gave you a purchase order or a specific entity to invoice, match it exactly. Accounts teams bounce invoices addressed to the wrong name.
A unique invoice number
Every invoice needs its own number, one you can find again later. Any consistent scheme works. The only rule is that you never reuse one.
Issue date and due date
When you issued it, and when you expect to be paid. A dated deadline beats a term like Net 30 on its own, because there is nothing left to calculate.
What you supplied
One line per item, service, milestone or billing period, described clearly enough that someone in accounts payable understands it without calling whoever did the work.
Quantity, rate and line total
Where it applies, show the units or hours, the rate, and the amount for each line. The arithmetic should be easy to follow at a glance.
The totals
Subtotal first, then any discount and tax on their own lines, then one unmistakable amount due. Never fold the tax into the total.
How to pay
Tell the customer exactly how to pay you: the bank, card or UPI details, and any reference you want them to quote. This is the line that actually gets you paid, so make it impossible to miss.
Worth adding
Depending on the job and the client, a few more details earn their place:
- A purchase order number
- A project, contract or account reference
- Payment terms
- Tax registration details
- The currency, if there is any doubt
- A note about a deposit or a prior payment
- Late-payment terms you agreed in advance
Add them where they help. The point is an invoice someone can scan and pay, not a form to fill.
Before you send
Thirty seconds of checking saves a week of email:
- Is it addressed to the right legal or billing entity?
- Is the invoice number correct and unused?
- Do the line items match what was agreed?
- Are the tax treatment and currency right?
- Does the total add up?
- Is there a specific due date?
- Are the payment details correct?
Check the payment details in particular. A beautifully formatted invoice is still a problem if it points the customer at the wrong account.