Finance for construction companies

Sterling's take Our funding partner doesn't take construction right now, so I can't pass you on. I can still tell you which finance suits a business that waits 60 days for a valuation and loses a slice to CIS and retentions.
Our current funding partner doesn't take this industry right now. That's on us, not you. The calculators below still work for any offer you're weighing.
Our current funding partner doesn't take construction companies right now. That's on us, not you. This page won't pass you anywhere, but it will tell you how finance works for a construction business, which products fit the way you get paid, and what they cost, so you can judge any offer you get elsewhere.
The cash-flow shape of a construction business
Construction pays late, pays in part, and pays less than the invoice. You buy materials and pay labour up front, then wait for a valuation, a payment notice and a payment date. Main contractors often agree long terms. For business-to-business deals, an agreed payment date must usually be within 60 days.
Then two things come off the top.
CIS deductions. Under the Construction Industry Scheme, a contractor takes deductions at the standard rate of 20% if you are registered and can be verified, 30% if not, and nothing if you hold gross payment status. The contractor works it out after taking off VAT and materials you paid for directly. A limited company claims the deductions back through its own payroll scheme, by entering them on its Employer Payment Summary so HMRC offsets them against what the company owes. In the meantime your bank receipts are smaller than your invoices.
Retentions. Many contracts hold back a percentage of each payment until practical completion and the end of the defects period. That money is earned but locked, sometimes for a year or more.
There is one protection worth knowing. A clause making your payment conditional on the payer being paid by someone else ("pay when paid") is ineffective under the Construction Act, unless that third party is insolvent.
Which finance fits, and which doesn't
- Invoice finance fits contractors with approved applications for payment, but construction invoices are harder to fund than most: valuations get disputed, contra-charges appear, and retentions are often excluded. Expect a lower advance rate than a wholesaler would get.
- Asset finance suits plant, vans and tools. The asset secures the deal, so it is usually the cheapest money a contractor can raise for kit.
- Revolving credit facility fits the gap between paying for materials and getting paid, if you can get one.
- Business loans fit a planned purchase, such as a yard or a second crew's set-up costs.
- Merchant cash advances rarely fit. Construction customers don't pay by card, so there are no card takings to collect from, and fixed daily debits against lumpy receipts are a poor match.
What it costs: a worked example
Say the company borrows £100,000 at 18% APR over 24 months, repaid monthly.
- Monthly repayment: £4,992.41.
- Total repaid: £119,817.84.
- Interest: £19,817.84.
Sterling's rule of thumb calls 18% "priced like bank lending". Now run that £4,992.41 against your worst month of receipts, after CIS, with your largest customer paying at 60 days. If it still clears, the loan fits. The repayment calculator on this page lets you change the rate and term.
What funders typically ask a construction company for
- Filed accounts and recent management accounts, with a work-in-progress schedule.
- Bank statements showing receipts against applications for payment.
- An aged debtor list, including retentions and when they fall due.
- Contracts or orders for the main jobs on the books.
- CIS statements, so the funder can see deductions waiting to be recovered.
A personal guarantee from directors is common.
Red flags specific to construction
- Finance sized on invoices, repaid from receipts. If an offer assumes you are paid in full on the invoice date, the repayment schedule is built on money you won't have.
- Retentions counted as cash. Funding that relies on a retention being released on time relies on someone else's snagging list.
- Concentration on one main contractor. If one customer is most of your ledger, their payment run is your cash flow. Funders know this and price for it.
Limited companies only
Many trades run as sole traders, and that's fine. Ask Sterling can only work with limited companies, because introducing sole traders and small partnerships is regulated credit broking. For limited companies, business finance is not regulated by the Financial Conduct Authority, so read each agreement carefully.
Run your own numbers: Loan repayment calculator
Monthly repayment
£4,992.41
- Number of repayments
- 24
- Total repaid
- £119,817.84
- Total interest
- £19,817.84
- Interest per £1 borrowed
- £0.20
- Same deal as a factor rate
- 1.198
Level repayments on an amortising loan. Fees aren't included: add them with the offer checker.
Weighing an offer from someone else?
These work for any offer, from any funder. Nothing is stored or sent anywhere.
Questions owners ask
Why can't Ask Sterling introduce my construction company?
Our current funding partner doesn't take construction or trades businesses at the moment. That's a gap on our side, not a judgement on your company.
Do CIS deductions affect how much I can borrow?
They can. A funder sizing finance on your bank deposits sees receipts after CIS has been taken, so your turnover can look lower than your invoices until deductions are recovered.
Can I raise finance against retentions?
Some invoice finance providers will look at retentions, but many exclude them because release depends on practical completion and the defects period. Ask before you sign.
Is asset finance a good fit for plant?
Usually, yes. The machine secures the finance, so the cost is often lower than unsecured money, and repayments run over a term that matches the asset's working life.
Sources
- GOV.UK — What you must do as a CIS subcontractor: get paid (2026)
- GOV.UK — What you must do as a CIS contractor: make deductions and pay subcontractors (2026)
- GOV.UK — What you must do as a CIS subcontractor: pay tax and claim back deductions (2026)
- legislation.gov.uk — Housing Grants, Construction and Regeneration Act 1996, section 113 (2026)
- GOV.UK — Late commercial payments: interest and debt recovery (2026)