A document sent by a supplier to a buyer, summarising the goods or services provided and the amount payable.

Example:

•   Supplier Invoice: A stationery supplier sends an invoice to a law firm detailing £2,000 worth of office supplies provided.

•   Service Invoice: An accountant sends an invoice to a client for £500, covering tax consultancy services.

Real-Life Scenario:

A construction company completes a renovation project for a client and sends an invoice for £20,000, specifying labour, materials, and other costs.

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