Debt Finance Explained: What It Is and How It Works

Thinking about funding your next stage of growth but don’t want to give up ownership? Debt finance could be the right fit.

In simple terms, debt finance is money your business borrows and agrees to pay back, typically with interest. It can be a flexible way to access working capital, buy equipment, or bridge to a larger raise - without diluting your shareholding.

In this guide, we’ll explain what debt finance is, how it differs from equity, the main types available to UK small businesses, the legal documents and approvals you’ll need, key terms to negotiate, and the compliance pitfalls to avoid. By the end, you’ll know how to approach lenders with confidence and set up your business to be protected from day one.

What Is Debt Finance (And How Is It Different From Equity)?

Debt finance is money you borrow under a legal agreement and repay over time. You pay interest (and sometimes fees) for the privilege of using that capital. Crucially, the lender does not get ownership of your business - they get a contractual right to repayment and, in many cases, security over your assets if you default.

Equity finance, by contrast, involves selling a slice of your company to investors. There’s no obligation to repay, but you dilute your ownership and often grant investors control rights.

Here’s how founders typically weigh the trade-offs:

• Control: Debt keeps control with founders; equity adds new shareholders and governance dynamics.
• Cost: Debt has cash cost (interest/fees); equity has ownership cost (dilution).
• Risk: Debt increases repayment pressure and default risk; equity reduces cash pressure but shares future upside.
• Speed: Smaller debt facilities can be quicker than equity rounds; larger secured facilities still require diligence and documentation.

If you’re still deciding how to structure a raise, it’s useful to understand the middle-ground instruments as well - for example, choosing between loans vs loan notes or considering a convertible note if you want debt that can convert to equity later.

What Types Of Debt Finance Can A Small Business Use?

There isn’t one “best” type - the right option depends on your cash flow, assets and goals. Common UK options include:

1) Term Loans

A lump sum you repay over a fixed period (e.g. 24–60 months) with interest. Useful for one-off investments like refurbishment or a vehicle. The lender may require security (more on that below) and financial covenants such as a debt service coverage ratio.

2) Overdrafts And Revolving Credit

A flexible facility that lets you draw up to a limit and only pay interest on what you use. Handy for working capital swings - for instance, stocking up before peak season or smoothing lumpy receivables.

3) Asset Finance (Hire Purchase, Leasing)

Funding tied to a particular asset (machinery, vehicles, equipment). The asset often acts as collateral. Repayments are aligned with the asset’s useful life, which helps cash flow planning.

4) Invoice Finance (Factoring, Discounting)

You receive an advance on unpaid invoices, then repay when customers pay. Can be a good fit for B2B businesses with reliable debtors but long payment terms. Be sure your customer contracts permit assignment or disclose factoring where required.

5) Trade Credit And Supplier Terms

Extended payment terms from suppliers are a form of short-term, unsecured debt. They’re often the cheapest “finance” if you can negotiate them - but missed payments can strain relationships and supply.

6) Promissory Notes And Loan Notes

Streamlined debt instruments used in early-stage or investor-led scenarios. A promissory note is a simple promise to pay; a loan note can support more complex terms (interest accrual, conversion mechanics, security, ranking). Both must be carefully drafted to avoid tax and enforceability issues.

7) Convertible Debt

Debt that can convert into shares on agreed triggers (e.g. a qualifying equity round). A convertible note can be quicker than a priced equity round and delay valuation discussions, while still giving investors downside protection as creditors until conversion.

What Legal Documents And Approvals Do You Need?

Raising debt is more than shaking hands with a lender. You’ll be signing binding documents and, for companies, you may also need board (and sometimes shareholder) approvals. Getting these right reduces the risk of disputes, unexpected liabilities and delays.

Core Debt Documents

• Loan Agreement or Facility Agreement: Sets out the amount, purpose, interest, repayment schedule, covenants, representations, fees and events of default. If you’re starting from a template, proceed with caution - it’s safer to work from a tailored Loan Agreement that actually fits your deal.
• Promissory Note or Loan Note Instrument: Used for simpler or investor-led debt; still a binding promise to repay with agreed terms. See the differences in loans vs loan notes.
• Term Sheet: A short, non-binding summary of key commercial terms agreed before drafting long-form documents. A clear Term Sheet helps avoid surprises in the legals.

Security And Support Documents

• Security Agreement/Debenture: Grants security over assets (fixed charges on specific assets and/or floating charge over circulating assets). For SMEs, this often takes the form of a General Security Agreement.
• Personal or Parent Guarantee: A director or parent company promises to pay if the borrower doesn’t. If asked for one, ensure the wording in any Deed of Guarantee and Indemnity matches what you’ve agreed commercially and doesn’t overreach.
• Share Charge/Specific Asset Charge: Security over shares or a specific key asset (for example, your main vehicle fleet or key equipment).
• Intercreditor/Subordination Terms: If you have multiple lenders, these set priority and payment waterfalls to avoid conflicts.

Company Approvals And Filings

• Board Approval: Directors should formally approve borrowing, granting security and signing documents. This ties into directors’ duties under the Companies Act 2006 (to promote the success of the company and exercise reasonable care and skill).
• Shareholder Approval: Needed in certain scenarios (e.g. if your Articles require it, or you’re granting security that affects shareholder rights). Check your constitution and any Shareholders Agreement.
• Companies House Charge Registration: Most charges must be registered at Companies House within the statutory deadline (currently 21 days) using the correct form. Failure can invalidate the security against a liquidator/administrator.

Tip: Build these approvals into your deal timeline. Lenders usually won’t advance funds until security is perfected (which can include these filings).

What Are The Key Terms To Watch (And Negotiate)?

Even “standard” debt terms vary widely. The headline interest rate is only one piece - the real risk profile lives in covenants, security and default mechanics. Pay close attention to:

Interest, Fees And Repayment

• Interest Type: Fixed vs variable (and the reference rate). If variable, consider interest rate caps or prepayment rights if rates rise.
• Fees: Arrangement, commitment, monitoring, early repayment, and non-utilisation fees can add up.
• Repayment Profile: Amortising vs bullet repayment; seasonal or step-down schedules that match your cash cycles.
• Prepayment: Ability to repay early without penalties; whether any “make whole” applies.

Covenants And Information Undertakings

• Financial Covenants: Leverage, interest cover, or minimum cash tests. Stress-test these against realistic downside scenarios.
• Operating Restrictions: Limits on additional debt, acquisitions, dividends, or asset sales (negative pledge). Ensure these don’t handcuff ordinary trading.
• Reporting: Management accounts, budgets, KPIs and compliance certificates - understand timing and effort required.

Security And Guarantees

• Security Scope: Fixed charges (specific assets) and floating charges (circulating assets like stock and receivables). Clarify what’s “permitted security”.
• Guarantees: Directors’ guarantees are common with banks and alt-lenders for early-stage businesses. Consider caps, duration limits and release conditions in any Deed of Guarantee and Indemnity.
• Priority: If you already have a lender or equipment finance, confirm who ranks first and whether a deed of priority is needed.

Events Of Default

Events of default are the triggers that let a lender accelerate the loan, enforce security, or charge default interest. Review the list carefully and narrow it to genuine risk events. Common items include non-payment, covenant breaches, cross-default to other facilities, insolvency events and material adverse change.

It’s worth reading a practical overview of events of default so you can spot terms that are unusually broad or ambiguous.

Representations, Warranties And Undertakings

You’ll be asked to confirm facts about your company, accounts, tax position, permits and compliance. If any representations are forward-looking or ongoing, make sure you can actually meet them and qualify them where appropriate (for example, by materiality or knowledge).

What UK Laws Should You Keep In Mind?

You don’t need to be a lawyer to raise debt - but you do need to be legally compliant. Here are the big-ticket items to keep on your radar:

Company And Director Duties

• Companies Act 2006: Directors must act in the company’s best interests and exercise reasonable care and skill. That includes choosing a finance structure the business can service and negotiating fair terms.
• Insolvency Act 1986: If your company is approaching insolvency, directors must avoid wrongful trading and prioritise creditor interests. If debt will push you into distress, stop and get advice.

Financial Promotions And Regulatory Perimeter

Under the Financial Services and Markets Act 2000, making or approving financial promotions (invitations or inducements to engage in investment activity) is regulated. Most business-to-business borrowing is outside the consumer credit regime, but be cautious when communicating offers broadly or involving retail investors. Lenders and platforms typically manage this risk - still, seek legal input before you advertise a debt instrument yourself.

Consumer Credit Act Considerations

The Consumer Credit Act 1974 may apply to certain loans to sole traders or small partnerships below specified thresholds, triggering additional formality and rights. If you’re borrowing as a sole trader or partnership, confirm whether the facility is regulated and ensure the lender is set up to lend compliantly.

Security Registration

Most company charges must be registered at Companies House within the deadline or they may be void against a liquidator/administrator. Your lender’s counsel usually manages filings, but you retain responsibility for accuracy and timing - build it into your completion checklist.

Contracting And Enforceability

Get the fundamentals right: authority to sign, correct parties, clear governing law, and properly executed documents. If you are granting security over assets, ensure consents are in place (for example, landlord, lessor or counterparty consents where your rights are restricted).

How To Raise Debt Finance: A Step-By-Step Approach

Step 1: Map Your Funding Need

Be clear on the use of funds (inventory, equipment, marketing, runway) and how the facility will be repaid. Lenders will want to see credible forecasts and sensitivity analysis. If you’re still exploring options, a short Term Sheet can be a useful way to cement headline terms before investing time in long-form documents.

Step 2: Choose The Right Instrument

Match the tool to the task. Asset-heavy purchase? Consider asset finance. Working capital gaps? A revolving line or invoice finance may suit. If you’re bridging to an equity round, a convertible note could align incentives while keeping speed.

Step 3: Compare Offers Beyond The Rate

Don’t anchor on APR alone. Compare fees, covenants, security, draw mechanics, information rights and default terms. Look at the total cost of capital over your likely holding period and the operational friction of ongoing reporting.

Step 4: Negotiate And Document

Agree heads of terms, then move to legals. Use a fit-for-purpose Loan Agreement (or loan note) and clarify security in a General Security Agreement if required. Keep an eye on events of default, any negative pledge, and prepayment rights.

Step 5: Approvals, Conditions And Completion

Get board approvals, collect KYC, deliver conditions precedent (insurance, consents, bank account confirmations), and plan filings (Companies House charges). Align timelines - funds won’t flow until conditions are satisfied.

Step 6: Post-Completion Hygiene

Diary covenant dates, reporting deadlines and interest resets. Keep your lender informed early if performance drifts - you’ll have more options before a breach happens. If your capital structure evolves, consider whether to refinance, repay, or even negotiate a debt-for-equity swap.

Practical Tips To Stay Protected

• Match Tenor To Cash Flows: Short-term facilities for short-term needs; longer tenors for long-lived assets.
• Stress-Test Covenants: Build headroom for seasonality and conservative cases. If a covenant is tight, seek a cure right or waiver mechanism.
• Limit Personal Exposure: If a guarantee is unavoidable, push for caps, time limits and release triggers tied to performance or LTV.
• Keep Security Proportionate: Ring-fence specific assets where possible; avoid sweeping “all-assets” security unless pricing and size justify it.
• Know Your Defaults: Narrow triggers, add notice and remedy periods for fixable issues, and clarify materiality thresholds.
• Coordinate With Existing Creditors: Put in place priority or intercreditor arrangements to avoid accidental cross-defaults.
• Document Everything Properly: Avoid copy-paste contracts - have them tailored to your deal and your operations.

If this feels like a lot, don’t stress - an experienced lawyer can help you choose the right instrument, negotiate fair terms and get the documents signed correctly so you can focus on running the business.

Key Takeaways

• Debt finance lets you access capital without giving up ownership, but it introduces repayment obligations, covenants and default risk - choose a format that your cash flows can genuinely support.
• Small businesses commonly use term loans, revolving credit, asset and invoice finance, as well as instruments like promissory notes, loan notes and convertible notes for bridge funding.
• Get your legal foundations right: a clear Term Sheet, a tailored Loan Agreement or note instrument, appropriate security via a General Security Agreement, and any necessary board/shareholder approvals and Companies House filings.
• Negotiate the details that matter - not just the rate: covenants, information rights, security scope, guarantees, and events of default will drive your real-world flexibility.
• Stay compliant with UK law: directors’ duties under the Companies Act 2006, insolvency considerations, possible Consumer Credit Act issues for sole traders/partnerships, and timely registration of charges.
• Protect yourself personally: if a guarantee is requested, ensure the Deed of Guarantee and Indemnity reflects what you’ve agreed and includes sensible limits.

If you’d like help structuring or documenting debt finance for your business, you can reach us at 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat.