Invoice vs bill
Usually the same document seen from two sides. You send an invoice; the person receiving it calls it a bill. An invoice tends to imply agreed work and a payment term, while a bill tends to imply an amount due now.
The Bill Generator produces the same document under either name. Bill Generator
Deciding which to send
- Ask whether the customer expects to pay later or has paid already. Later is an invoice, already is a receipt.
- Use invoice when the work was agreed in advance and there is a payment term.
- Use bill when the amount is due immediately, as in a restaurant or a utility.
- Match whatever your customer's accounts department calls it, because their process is what pays you.
- Whichever word you choose, keep the numbering sequence unbroken.
The difference is perspective, not paperwork
The document that leaves your desk as an invoice arrives on somebody else's as a bill. Both are a demand for payment listing what was supplied, what it costs and when it is due. In most accounting systems they are the same record seen from the two ends: your sales ledger calls it a sales invoice, theirs calls it a purchase invoice, and the person paying it calls it a bill.
Where the words diverge is in habit rather than law. Trades and professional services send invoices. Restaurants, utilities and hospitals send bills. Nobody asks for the invoice at the end of a meal, and no builder submits a bill for a kitchen.
Where the difference does matter
Timing. A bill usually means pay now: the meal is over, the electricity was used. An invoice usually carries a term, and that term is the part people argue about. If you send something called a bill with thirty days on it, expect to be chased for clarification.
Tone. On a first request, invoice reads as professional and bill can read as blunt. On a fourth request, blunt is the point.
Neither word changes what the document must contain, and neither changes when the tax point falls. If you are registered for a sales tax, the requirements attach to the transaction, not to the heading you typed.
What both of them have to carry
A unique number in an unbroken sequence. The date it was issued. Who is sending it and who owes it, both with addresses. A line for each thing supplied, with quantity and price. The total, with any tax shown separately. How to pay, and by when.
The number is the part people improvise and later regret. Gaps in a sequence are the first thing an auditor asks about, and they are usually explained by a document that was drafted and abandoned rather than anything sinister. Keep the sequence and note the cancellation.
And the third word: receipt
A receipt is the one that is genuinely different. An invoice or a bill asks for money; a receipt confirms it arrived. Sending a receipt before payment is a real error rather than a matter of wording, because it evidences something that has not happened.
If a customer asks for a receipt and has not paid, what they usually want is either a copy of the invoice or a proforma. Ask which.
Questions people ask next
Is an invoice the same as a bill?
In practice yes, seen from the two sides. You issue an invoice; the recipient files it as a bill. The content required is identical.
Which should I send a customer?
Invoice, in almost every business context, particularly where the work was agreed in advance and payment is due on a term. Bill suits an amount due immediately.
Does the word change the tax treatment?
No. The requirements attach to the transaction and to your registration, not to the heading. Changing the word changes nothing you owe.
What about a receipt?
That one is different in substance. A receipt confirms payment has been made. It comes after the money, never before.