- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 12 Apr 2018
Payment for construction
In general terms, 'payment' is the transfer between parties of some form of value (such as funds, services, assets) in an agreed exchange. This can be for goods, services or to fulfil a legal obligation such as a debt. The most common form of payment involves money although it can also take the form of stock issues or other benefits, and is typically preceded by a bill or invoice specifying the amount due.
The payee (the party being paid) generally has the right to specify the method of payment they will accept from the payer (the party that is paying). The payee may decide that they will accept a part/discounted payment in exchange for certain conditions, i.e. a cash payment, prompt payment, and so on.
By accepting a payment, the payee extinguishes the debt or other obligation that was owed to them by the payer, and usually acknowledges the payment by issuing a receipt. Generally a payee cannot unreasonably refuse acceptance of a payment.
In the construction industry, payment can be the source of a great deal of controversy. Not only are the sums involved very large, and the duration of projects very long, but the total amount payable tends to change over time. In addition, contractors, subcontractors and suppliers face considerable risk when pricing construction projects, and optimistic pricing or late payments can quickly cause cash flow problems.
See Tender process for more information.
The price agreed for construction works is often referred to as the ‘contract sum’. However, this sum is rarely ‘fixed’, and contracts will typically allow the price to change under certain circumstances:
- Variations: Most contracts will contain provision for the architect or contract administrator to issue instructions to vary the design, quantities, quality, sequence or working conditions.
- Relevant events: A relevant event may be caused by the client (for example failure to supply goods or instructions), or may be a neutral event (such as exceptionally adverse weather) and may result in a claim for loss and expense by the contractor.
- Provisional sums: These are allowances for a specific element of the works that is not defined in enough detail for tenderers to price.
- Fluctuations: A mechanism for dealing with inflation on projects.
- Payments to nominated sub-contractors or nominated suppliers.
- Statutory fees.
- Payments relating to opening-up and testing the works.
The Housing Grants, Construction and Regeneration Act includes provisions to ensure that payments are made regularly and promptly throughout the supply chain. Interestingly, the Act does not stipulate payment periods, simply providing that parties are free to agree what payments are due and when, i.e. the contract must set out an adequate mechanism for determining these matters. If contracts do not comply with the Act, the Scheme for Construction Contracts applies.
See Interim certificates for more information.
Retention is a percentage (often 5%) of the amount certified as due to the contractor on an interim certificate, that is deducted from the amount due and retained by the client. The purpose of retention is to ensure that the contractor properly completes the activities required of them under the contract.
See Retention for more information.
Construction 2025, the government's long-term vision for the future of the construction industry, cited equitable financial arrangements and certainty of payment as critical success factors for the industry and proposed a need to ‘...create conditions for construction supply chains to thrive by addressing access to finance and payment practices.’
- The Housing Grants, Construction and Regeneration Act.
- The Late Payment of Commercial Debts (Interest) Act.
- The Late Payment of Commercial Debts Regulations.
- Construction Supply Chain Payment Charter.
- Small Business, Enterprise and Employment Act.
- Project bank accounts.
- Prompt payment code.
- Retention held in trust fund.
See Fair payment practices for more information.
 Find out more
 Related articles on Designing Buildings Wiki
- Causes of construction disputes.
- Construction invoice fraud.
- Construction supply chain payment charter.
- Fair payment practices.
- Housing Grants, Construction and Regeneration Act.
- The Late Payment of Commercial Debts Regulations 2013.
- Payment notice.
- Payments to nominated sub-contractors.
- Pay less notice.
- Payment schedule.
- Project bank accounts.
- Prompt payment code.
- Scheme for construction contracts.
- Small Business, Enterprise and Employment Bill.
- The causes of late payment in construction.
Featured articles and news
Tackling domestic abuse.
Disallowed costs vs. defined costs. Which is which?
Coping with the loss of local authority conservation services.
Remedial works could save the NHS £95 million a year.
One of Europe’s largest waterfront transformations.
How BIM was used to produce an information model of a home.
Skyscrapers of the future will be built of wood.
How to increase your chances of winning.
Benefits, not cost, should be the focus.
Formula E drives electric vehicle market forward.
Moorfields building sets UK pile-loading record.