Debt financing can extend runway without diluting ownership. This guide explains the main instruments, lender expectations, how to apply, and how debt fits alongside grants and equity.
If your business is planning pilots, tooling or scale-up, debt financing can provide non-dilutive capital to complement grants and equity. Used well, it smooths cash flow, preserves control and helps you reach milestones that unlock the next round at stronger valuations.
What is debt financing?
Debt financing is funding you repay over time, with interest and agreed covenants. It includes term loans, revolving credit, asset backed facilities, venture debt and revenue based finance. For R&D-heavy companies, the right structure can bridge claims-in-arrears on grants, fund trials, and finance equipment or working capital while protecting equity.
Why consider debt now
- Preserve ownership while extending runway.
- Match repayments to expected cash inflows.
- Signal operational discipline to future investors.
Common instruments and when to use them
1) Term loan
Fixed amount, fixed or floating rate, amortising or interest-only with a bullet. Suitable for equipment, fit out or a defined scale-up plan.
2) Revolving credit facility (RCF)
Flexible draw and repay within a limit. Helpful for working capital, bridging grant claim cycles or seasonal revenue.
3) Asset finance and leasing
Secured on equipment or vehicles, often with residual values. Useful when assets hold secondary market value.
4) Invoice finance
Advance against receivables to accelerate cash conversion. Works when you have credible counterparties and predictable billing.
5) Venture debt
Designed for VC-backed growth companies. Typically term loans with warrants, light covenants and milestone-based tranching.
6) Revenue based finance
Repayments as a percentage of monthly revenue until a cap is reached. Useful where revenues are ramping and seasonality is high.
7) Trade and import facilities
Letters of credit, guarantees and supply-chain finance to support manufacturing and distribution.
Lender expectations: how to look credit ready
- Use of funds and milestones. Clear plan linking capital to measurable outcomes such as certification, pilot completion or manufacturing readiness.
- Cash flow visibility. Forecasts that reconcile to the sales pipeline, grant claim timings and cost base.
- Security and structure. Understanding of fixed and floating charges, ranking of security, personal guarantees where relevant, and any intercreditor arrangements.
- Covenants and headroom. Sensible tests such as minimum liquidity or revenue, with buffers under downside scenarios.
- Governance and reporting. Clean management accounts, board minutes, and timely MI packs.
Eligibility at a glance
In one line: Lenders assess affordability, collateral and visibility of cash flows, not just headline growth.
Typical criteria
- Trading history with filed accounts and management information.
- Evidence of traction, contracted revenues or credible purchase orders.
- Sensible leverage versus gross margin and churn.
- For venture debt, backing from recognised investors and a plan to the next equity round.
- For asset finance, equipment with recoverable value and proof of installation or commissioning.
Cost of capital and structure
- Interest rate: Fixed or floating, priced against risk and base rates.
- Fees: Arrangement, commitment and sometimes prepayment fees.
- Security: Debentures, asset charges, or unsecured for venture debt with warrants.
- Tenor: Usually 2–5 years for growth facilities, shorter for working capital lines.
- Repayment profile: Interest-only periods can align with trial phases, followed by amortisation once revenues stabilise.
Tip: Model three cases. Base, downside and severe downside. Debt should be serviceable under base and manageable under downside with remedial actions.
How debt financing fits with grants and equity
- Alongside grants. Use RCF or invoice finance to bridge claim cycles. Keep a clear audit trail to avoid double funding of costs.
- Before equity. A modest facility can extend runway to de-risk milestones, improving pricing at the next round.
- After equity. Venture debt can lengthen cash runway between rounds without further dilution.
- Caution: Do not over-gear early. Maintain liquidity buffers and respect any negative pledge or consent clauses in shareholder agreements.
Application process: step by step
- Define objectives
Quantify the runway extension or project milestone the facility must fund, with dates and deliverables. - Prepare the data room
Management accounts, three-statement model, cohort or unit-economics analysis, customer pipeline, contracts, grant schedules, and cap table. - Facility design
Choose instrument, limit, tenor, covenants and draw schedule that match your cash cycle. Draft an outline term sheet preference. - Market sounding
Speak to two or three lenders suited to your profile. Share a short teaser and your preferred terms to anchor discussions. - Indicative offers and diligence
Provide detailed forecasts, assumptions and sensitivity tests. Expect customer referencing and legal due diligence. - Negotiate terms
Focus on covenants, security, fees, MAC clauses, cure rights and information undertakings. Align covenant test dates with your reporting cadence. - Legal and closing
Review facility agreement, security documents and any intercreditor arrangements. Ensure board and shareholder approvals are in place. - Post-draw monitoring
Implement reporting, covenant tracking and variance analysis. Keep a 13-week cash flow updated weekly.
Common pitfalls and how to avoid them
- Mismatched tenor. Short facilities for long projects create refinancing risk. Match debt to asset or milestone life.
- Optimistic forecasts. Bake in realistic ramp rates and slip risk on pilots or certifications.
- Covenant traps. Avoid tight headroom or poorly defined metrics. Ask for equity cure or temporary waivers for known inflection points.
- Security blind spots. Understand the impact of debentures on future borrowing and on grant agreements.
- Under-reporting. Late MI erodes lender trust. Automate monthly packs and reconcile to bank statements.
CFO checklist
- Facility aligns to milestones and cash conversion cycle.
- Three-case financial model with covenant and liquidity headroom.
- Grant claim calendar integrated into 13-week cash flow.
- Security, IP and change-of-control clauses reviewed.
- Information undertakings mapped to deliverables and owners.
- Sensible early repayment strategy if equity arrives sooner than planned.
Example scenario
A robotics SME preparing a 12-month pilot secured a £1.5 million package: a £750k term loan with six months interest-only, a £500k RCF to bridge Innovate UK claims, and £250k asset finance for tooling. Covenants were limited to minimum liquidity and a quarterly revenue test with 20 percent headroom. The facility extended runway to post-pilot orders, enabling a stronger Series A.
Actionable next steps
- Map your 18-month cash needs and identify the milestone debt will finance.
- Build a lender pack with MI, forecasts, pipeline, customer references and grant schedules.
- Shortlist two instruments that match your cash cycle.
- Request term sheets and compare effective APR, covenant headroom and flexibility.
- Set up monthly MI and a 13-week cash flow before first draw
