Advance Payment

An advance payment is an amount paid to a supplier or contractor before any goods are delivered or work is carried out. It is sometimes called a down payment, mobilization advance, or prepayment, depending on the context and the contract type involved. For the payer, an advance payment is recorded as a prepaid expense and treated as an asset on the balance sheet until the corresponding goods or services are received. For the recipient, it is initially a liability - deferred revenue - until the obligation is fulfilled.

Advance payments are common across construction, renewables, promotional merchandise, and office furniture, wherever the supplier or contractor faces significant upfront costs before they can begin work.

Why Suppliers and Contractors Request Advance Payments

The most common reasons for requesting an advance payment are to fund procurement of materials or equipment specifically required for a project, to cover mobilization costs such as site setup or initial subcontractor bookings, and to provide working capital ahead of the first milestone payment. A solar PV installer procuring panels and inverters for a commercial rooftop array may need to commit tens of thousands of pounds before a single panel is installed. A furniture dealer placing a bespoke made-to-order specification typically must commit to a manufacturer order well before any delivery date is confirmed.

Where the advance payment is substantial, the paying party should require an advance payment bond from the recipient - a financial guarantee, typically issued by a bank or surety company, that the advance will be returned or applied against deliverables if the project does not proceed.

How Advance Payments Are Structured

In construction contracts, advance payments are typically liquidated progressively - deducted from interim or milestone payment certificates as the project proceeds, reducing the outstanding advance over time. The NEC contract suite, for example, allows advance payments covering a defined percentage of the actual cost of plant and materials procured specifically for the project.

In trade and service businesses, advance payments more commonly take the form of a percentage deposit collected on order confirmation - with the balance due on delivery, completion, or final sign-off. Deposit percentages vary significantly: 30-50% is common for bespoke furniture and merchandise orders, while mobilization advances on construction projects often represent 5-20% of the contract sum.

Structured advance payments - where the deposit amount, the conditions for applying it to the final invoice, and the refund position on cancellation are all agreed in writing before work begins - protect both parties and reduce the risk of disputes at project close-out.