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The three documents of the billing cycle — what each one commits you to, when to issue it, and why they should be linked rather than separate.
Most business transactions pass through three paper stages. A quotation proposes: here is what the work will cost, valid until this date. An invoice demands: the work is done (or agreed), payment is due by this date. A receipt confirms: payment arrived, this transaction is closed.
They are not interchangeable. A quotation creates no obligation to pay; an invoice does. An invoice is not proof of payment; a receipt is. Mixing them up creates awkward conversations at best and disputes at worst.
A quotation (or estimate) carries the same itemization discipline as an invoice — lines, quantities, rates, tax — but its defining field is the validity date: how long the offer stands. That date protects you from being held to last quarter’s prices, and gives the client a reason to decide.
In InvoiceZeo, quotations have their own numbering sequence (QUO by default) and statuses suited to a sales conversation, and the moment a client accepts, one click converts the quotation into an invoice — same items, new number, recorded lineage.
The invoice replaces the validity date with a due date and shifts the tone from proposal to obligation. It should trace back to what was agreed — which is why generating it from the quotation, rather than retyping, prevents the classic dispute of “that’s not what the quote said.”
A receipt documents money received. It is the document your client files for their own accounting, and the one that makes your records complete. Because a receipt only makes sense for a completed payment, InvoiceZeo enforces that receipts are always marked paid — created standalone or converted from a paid invoice in one click.
When quotation, invoice and receipt live in separate tools — or separate Word files — the trail between them exists only in your memory. Linked documents answer audit questions instantly: which quote produced this invoice? Was this invoice ever paid? Which receipt covers it? InvoiceZeo records lineage on every conversion, so the answer is a click, not an archaeology session.