R&D Tax Credit Bridging
Research and Development (R&D) tax credit refunds from HMRC can take 3-9 months to process after filing. For SMEs and start-ups that depend on R&D credits as a significant cash flow event, this wait creates a real funding gap.
Advance Finance Against Your HMRC Refund
R&D tax credit bridging advances finance against the confirmed claim, providing working capital now while HMRC processes the refund. The refund itself is the exit strategy.
R&D Tax Credit Bridging - August 2026
| R&D scenario | Advance rate | Bridge rate | Notes |
|---|---|---|---|
| SME R&D credit - cash refund claim (loss-making) | Up to 85%-90% of claimed amount | 0.65%-0.80%/month | R&D specialist lenders - exit is HMRC refund. No property security required by some lenders. |
| RDEC (large company expenditure credit) | Up to 85% of confirmed credit | 0.70%-0.85%/month | RDEC is a credit against CT liability rather than a cash refund. Structure differs. |
| R&D credit plus property security | Up to 90%+ of claim | 0.60%-0.75%/month | Where property is available as additional security, rates and advance rates improve. |
| Disputed or under-review R&D claim | Not available until resolved | N/A | HMRC inquiry into the claim removes the certainty needed for advance finance. |
Indicative rates - August 2026. Rates change daily. Actual rate depends on LTV, security, credit profile, loan size, and exit strategy. Contact our team for a live rate comparison for your specific case. All rates sourced from lender product sheets and publicly available market data.
What determines your rate
What makes an R&D claim fundable
The claim must be submitted and in the HMRC queue - not planned or in preparation. Specialist R&D advance lenders review the claim (often with their own R&D tax specialists) and confirm its eligibility before advancing. The cleaner and more clearly evidenced the claim, the higher the advance rate and the lower the rate.
HMRC processing times
Standard HMRC R&D credit processing times vary. HMRC targets 28-day processing for online SME R&D claims but backlogs and compliance checks frequently extend this. HMRC's compliance review programme (launched from April 2023 to reduce fraudulent R&D claims) means more claims face extended review. R&D advance finance is more valuable when HMRC timing is uncertain.
Property security vs R&D-only security
Some specialist R&D advance lenders do not require property security - the R&D claim itself is the collateral. This makes R&D bridging accessible to asset-light businesses (tech start-ups, software companies). Where property is available, better rates and advance rates are typically available from a wider lender pool.
Exit strategy
The exit is the HMRC refund. The bridge is typically structured so that when HMRC pays the refund, it is directed to the lender to repay the advance plus interest. This is arranged through an assignment of the R&D credit to the lender - a legal mechanism that most specialist R&D lenders use routinely.
Worked cost example
Scenario: Software SME. 2024/25 R&D tax credit claim: £180,000 (loss-making, entitled to cash refund at 10% of qualifying expenditure under revised RDEC rate).
Claim submitted March 2026. Expected HMRC processing: 4-6 months.
R&D advance: £153,000 (85% of £180,000 claim). Rate: 0.70%/month. Term: 6 months.
Total interest: £6,693. Arrangement fee (1%): £1,530.
TOTAL COST: £8,223.
Alternative: wait 6 months. Cost: £180,000 × 6 months × (opportunity cost of capital at 10% p.a.): £9,000.
R&D advance is broadly comparable in cost to the opportunity cost of waiting - with the benefit of immediate working capital for growth.
HMRC pays £180,000: repays £161,223 (advance + cost) and £18,777 returned to business.
Rate context and outlook
R&D tax credit reform has significantly changed the landscape since April 2023. The two previous schemes (SME R&D relief and RDEC) were merged into a single RDEC-style scheme from April 2024 for most companies (R&D Intensive SMEs retain some preferential treatment). The merged scheme changed the credit rates, making careful planning essential. HMRC's compliance programme has also increased scrutiny of claims. R&D advance finance has grown significantly as businesses recognise the funding value of their confirmed claims.
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Frequently asked questions
Can I borrow against an R&D tax credit before it is paid?
Yes - specialist R&D advance lenders can provide finance against a submitted and assessed R&D tax credit claim before HMRC has processed the refund. The credit itself serves as security (through a legal assignment to the lender). The advance is typically 80%-90% of the claimed amount. The lender's R&D specialists review the claim to confirm its eligibility before advancing.
Do I need to own property for R&D advance finance?
Not necessarily - some specialist R&D advance lenders advance without property security, using the R&D claim as the sole collateral. Others improve terms significantly if property is available as additional security. Asset-light tech and software businesses can access R&D advance finance without property.
What is the assignment of R&D credit?
To secure the advance, the lender takes an assignment of the R&D tax credit - meaning HMRC pays the refund directly to the lender rather than to the company. The lender deducts the advance and interest and remits the balance to the company. This is a standard mechanism used by all specialist R&D advance lenders and is legally straightforward.
What happens if HMRC rejects or reduces the R&D claim?
If HMRC rejects the claim or reduces it significantly, the company is still liable for the advance. The lender advances against the claimed amount - the risk of a HMRC adjustment rests with the borrower. This is why R&D advance lenders review the claim quality carefully before advancing, and typically do not advance 100% of the claimed amount (the buffer covers partial reduction risk).
Are R&D advances available for RDEC (large companies)?
RDEC (Research and Development Expenditure Credit) is a credit against the large company's CT liability rather than a cash refund. Advancing against RDEC is more complex than advancing against the SME cash refund. Some specialist lenders work with RDEC - the structure involves the credit being applied against the CT liability and the net saving being advanced. Contact us for large company R&D advance options.
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