Construction Retention Release Finance Explained
Construction firms routinely wait 12 to 24 months for retention funds to be released, creating serious cash flow gaps. Retention release finance lets contractors and subcontractors borrow against those withheld sums before the defects period ends. This guide explains how the product works, which lenders offer it, and how to apply.
What Is Construction Retention Finance?
Retention release finance is a short-term lending product that allows construction businesses to unlock cash tied up in contractual retentions before the formal release date. Typically, main contractors withhold 3% to 5% of each payment application under JCT or NEC contracts, releasing half at practical completion and the remainder after the defects liability period, which commonly runs six to twelve months.
For subcontractors in particular, this creates a compounding problem. A firm with £2 million of annual turnover may have £80,000 to £100,000 sitting in retention at any one time. A lender advances a proportion of that withheld sum, usually 70% to 85% of the verified retention balance, and the business repays when the retention is released by the employer or main contractor. The facility effectively converts a future receivable into immediate working capital.
Why Retentions Cause Cash Flow Problems
Retentions compress margins at precisely the wrong moment, forcing contractors to fund ongoing labour and material costs from a reduced revenue base. The construction sector already operates on thin net margins, often 2% to 5% for specialist subcontractors, so withheld retentions can represent the entire profit on a contract.
Late payment compounds the issue. According to the Prompt Payment Code statistics published in 2025, construction remains one of the worst-performing sectors for late settlement of subcontractor invoices. When a defects period drags on beyond the contractual deadline, businesses face the choice of pursuing dispute resolution, writing off the debt, or financing the shortfall from internal reserves. Many smaller subcontractors have no reserves to draw on, making external finance the only practical route to maintaining payroll and purchasing materials for the next project.
Which Lenders Offer Retention Finance in the UK?
A small number of specialist lenders and invoice finance providers offer dedicated retention release facilities in the UK, and the terms vary considerably depending on contract type, debtor credit quality, and trading history.
Close Brothers Invoice Finance and Bibby Financial Services both operate construction-specific invoice discounting lines that can accommodate retention balances alongside standard applications. Specialist brokers such as Simply Asset Finance and Reward Finance Group have placed retention facilities for SME contractors. Some challenger banks, including Allica Bank, will consider retention-backed lending for established limited companies with audited accounts and turnover above £500,000, though they typically structure this as a revolving credit facility rather than pure retention finance. For businesses turning over less than £500,000, the most accessible route is usually a specialist invoice finance broker who can access panel lenders with an appetite for construction debtors.
Rates, Fees, and Typical Structures
Retention finance costs more than standard invoice discounting because the receivable is not immediately due and carries defects risk, but rates have remained broadly stable since the Bank of England base rate has held at 3.75% since December 2025.
Typical pricing includes a service charge of 0.8% to 1.5% of the facility value per month, plus a discount charge linked to base rate, commonly base plus 4% to 6% on drawn balances. On a £60,000 retention advance held for nine months, total financing costs would typically fall between £4,500 and £8,100. Some lenders add arrangement fees of £500 to £1,500. Businesses should request a full cost illustration in writing before signing any facility agreement. Where the retention debtor is a well-rated main contractor or public-sector body, lenders may price more keenly because credit risk is lower.
Eligibility Requirements
Most retention finance providers require a limited company structure, at least 12 months of filed accounts, and written evidence of the retention balance from the main contractor or employer. Some will accept a signed final account or contract administrator certificate in lieu of audited accounts for newer businesses.
The quality of the retention debtor matters as much as the borrower's own credit profile. Lenders conduct credit checks on the main contractor or employer holding the funds. Local authority and housing association retentions are generally viewed favourably. Private developer retentions attract more scrutiny, particularly since a number of residential developers entered administration during 2023 and 2024, leaving subcontractors with unrecoverable retention balances. Businesses with CCJs or HMRC arrears may still access retention finance through specialist panels, though pricing will be higher and advance rates lower.
How to Apply for Retention Release Finance
Applying for retention finance is more straightforward than many construction businesses expect, provided the paperwork is in order before approaching a lender or broker.
Gather your most recent two years of filed accounts, your latest management accounts, a schedule of current retention balances with contract names and debtor details, copies of the relevant JCT or NEC contract sections confirming the retention terms, and any practical completion certificates already issued. A specialist construction finance broker can approach multiple lenders simultaneously, which is more efficient than applying direct and receiving a decline that leaves a credit search footprint. The process from initial enquiry to facility offer typically takes five to fifteen working days for straightforward cases. Funds are drawn against verified balances rather than paid in a single lump sum, so the facility grows as further retentions are confirmed.
Alternatives to Retention Finance
Retention finance is not the only way to bridge a construction cash flow gap, and it may not always be the cheapest option for every business.
A revolving credit facility or unsecured business loan from a lender such as iwoca or Funding Circle may suit firms that need general working capital rather than finance tied to a specific retention balance. Where the cash flow problem stems from slow payment on invoices rather than retentions, whole-of-book invoice discounting is usually more cost-effective. If HMRC arrears are part of the picture, a Time to Pay arrangement running alongside a retention facility can reduce monthly outgoings while awaiting retention release. For larger contractors with turnovers above £1 million, Allica Bank and OakNorth both offer bespoke working capital facilities that can be structured around construction payment cycles without the per-retention administration that specialist products require.
| Lender / Provider | Min Turnover | Advance Rate | Monthly Cost (approx) | Best For |
|---|---|---|---|---|
| Close Brothers Invoice Finance | £500k | Up to 85% | 0.8%–1.2% + discount charge | Established contractors, strong debtors |
| Bibby Financial Services | £250k | Up to 80% | 0.9%–1.4% + discount charge | SME subcontractors, mixed debtor quality |
| Allica Bank (revolving credit) | £500k | N/A (facility-based) | Base + 4.5%–6% pa on drawn | Established Ltd cos, £150k+ facility |
| Reward Finance Group | £200k | Up to 75% | 1.2%–1.5% + fees | Thin file, newer businesses |
| Specialist broker panel | £100k | 70%–85% | Varies by lender | CCJs, HMRC arrears, complex cases |
Step-by-step
- Compile a full schedule of current retention balances, including contract name, main contractor or employer, contract value, amount withheld, and expected release date.
- Gather your last two years of filed accounts plus recent management accounts showing current trading position.
- Obtain copies of the relevant contract sections confirming retention terms and any practical completion certificates already issued.
- Approach a specialist construction finance broker rather than applying direct to a single lender, to access multiple providers without multiple credit searches.
- Review the full cost illustration from any lender, including service charge, discount charge, and arrangement fees, before signing a facility agreement.
- Draw funds against verified retention balances as needed and repay the facility when the retention is released by the main contractor or employer.
Example
A specialist groundworks subcontractor based in the Midlands had £74,000 in retentions spread across three main contractors, with release dates between eight and fourteen months away. Payroll pressure was acute. Through a broker, the business secured a retention finance facility advancing 80% of the verified balances, releasing £59,200 within ten working days. Total financing costs over an average nine-month hold were approximately £6,400. The facility was repaid in full as each retention was released on schedule.
Frequently asked questions
Can a sole trader access retention release finance?
Most retention finance lenders require a limited company structure because they take a legal assignment of the retention debt, which is simpler to execute with a company. Some specialist brokers have panel lenders who will consider partnerships or sole traders, but the choice is narrower and rates are typically higher. Converting to a limited company before applying may improve both access and pricing.
What happens if the main contractor becomes insolvent before releasing the retention?
This is the primary credit risk in retention finance. If the main contractor enters administration, the retention becomes an unsecured claim in the insolvency, and recovery is uncertain. Lenders price this risk into their advance rates and conduct credit checks on the debtor before agreeing a facility. Businesses should be aware that the finance provider will pursue recovery independently, but the borrower may still carry some residual liability depending on the facility terms.
How long does it take to receive funds after applying?
For straightforward cases with clean accounts and a well-rated retention debtor, most lenders can issue a facility offer within five to ten working days of receiving a complete application pack. The first drawdown typically follows within two to three working days of the facility being signed. Complex cases involving HMRC arrears, CCJs, or private developer debtors may take longer.
Does taking retention finance affect my business credit score?
A facility agreement will result in a credit search on your business, which is recorded at Companies House and with credit reference agencies. However, a properly managed retention finance facility that is repaid on time can have a neutral or mildly positive effect on your credit profile over time. Using a broker to approach multiple lenders simultaneously usually means a single soft search rather than multiple hard searches.
Is retention finance regulated by the FCA?
Business lending to limited companies is not subject to FCA consumer credit regulation, so most retention finance facilities fall outside FCA oversight. However, lenders who are FCA-authorised may apply their conduct standards voluntarily, and the Lending Standards Board's Standards of Lending Practice for Business Customers covers some providers. Always check whether your lender is registered with Companies House and review the facility agreement carefully before signing.
By Oliver Mackman, Director, Best Business Loans Ltd. Last reviewed 2026-05-22.