Invoice vs receipt vs bill: the differences that actually matter
People use “invoice”, “bill” and “receipt” interchangeably, and most of the time no one cares. The differences matter at exactly two moments: an audit, and a payment dispute.
All three documents record a transaction, which is why the words blur in everyday use. Legally and for tax purposes they are different instruments: they are issued by different parties, at different times, and they prove different things.
The short version
| Document | Issued by | Issued when | What it proves |
|---|---|---|---|
| Invoice | The seller | Before or at delivery — it requests payment | A liability exists: the buyer owes this amount |
| Bill | The seller | Same as an invoice — the word used in consumer contexts | Same as an invoice; “bill” is a register, not a different document |
| Receipt | The seller | After payment is received | Payment happened: the liability is settled |
“Bill” is the least technical of the three — utilities and restaurants send “bills”, businesses send “invoices”, but the document contents and legal weight are the same. The invoice/receipt distinction is the one that matters.
Why the distinction matters for tax
Input tax credit, expense deductions and audit trails all attach to the invoice, not the receipt. A GST-registered buyer cannot claim ITC on a payment receipt; they need the tax invoice showing the tax split. Conversely, an invoice proves nothing about payment — a company that pays against an unpaid invoice keeps both, because the invoice proves the debt and the receipt proves settlement.
Where credit notes fit
When an invoice turns out to be wrong — a price correction, a return, a cancellation — the fix is a credit note, not a deleted invoice. A credit note references the original invoice number and reverses all or part of it. Both documents stay in your records; the net position is what your returns report. This is why deleting or reusing an invoice number is always the wrong move: the paper trail stops reconciling.
Practical naming
- Send an invoice when you want to be paid. Number it consecutively.
- Send a receipt (or payment confirmation) when money lands. Reference the invoice number.
- If a client asks for “a copy of the bill”, they mean the invoice. Send it.
- Never issue an invoice after payment as a substitute for a receipt — the due date and tax point narrative gets incoherent, and auditors notice.
How Invoicr handles it
Invoicr produces invoices, and marks an invoice paid with its payment record and date once you record the payment — which gives you both halves of the paper trail from one document. Start with the free invoice builder.
Invoicr validates structure and arithmetic, not your business facts. This is general information, not tax, accounting or legal advice — check anything consequential with your accountant.