How to Fund UK Business Growth Without Giving Up Equity
Julian Dobbin
CEO · Mar 19, 2026 · 8 min read
Many UK business owners see raising external equity as the default route to growth funding. But giving up equity dilutes ownership, creates governance obligations, and can limit strategic flexibility. For most SMEs, debt-based growth finance through commercial lenders is both available and more appropriate than equity at most stages of growth.
Why debt often beats equity for established UK SMEs
Equity investors take a permanent stake in the business in exchange for their investment. If the business grows successfully, the value of their stake grows too, potentially far exceeding the original investment. Debt, by contrast, costs a fixed amount (interest and fees) and then is repaid, with no further obligation. For businesses with strong and predictable cash flows that can service debt comfortably, the equity-versus-debt calculation almost always favours debt.
A business growing from 1 million to 3 million pounds turnover over 5 years that funded the growth through 200,000 pounds of debt at 12 percent APR will pay approximately 64,000 pounds in total interest. A business that funded the same growth by giving away 20 percent equity to an investor and then grew to a 2 million pound exit valuation would have given up 400,000 pounds of value. The debt option is cheaper by a significant margin if the growth plan is delivered.
The debt instruments available for growth funding
Unsecured growth loans from 25,000 to 500,000 pounds are available from fintech and challenger lenders for established businesses. Revenue-based finance, where repayments are a percentage of monthly revenue, is increasingly available for businesses with subscription or recurring revenue. Asset finance funds growth through equipment investment without drawing on working capital. Invoice finance scales working capital automatically with revenue growth.
For businesses with commercial property, a secured growth loan using property equity provides the largest amounts at the lowest rates, enabling significant growth investment at a cost that most growing businesses can comfortably service from improved trading.
"Giving up equity is permanent. Paying interest on a loan is temporary. For a UK business with proven cash flow and a clear growth plan, the debt option should be exhausted before equity is considered."
- Julian Dobbin, CEO, Spark Finance
Using debt effectively for growth investment
Debt-funded growth works best when the return on the growth investment clearly exceeds the cost of the debt. Hiring a sales person at 50,000 pounds per year who generates 250,000 pounds of new revenue at a 30 percent gross margin generates 75,000 pounds of additional gross profit. If this hire is funded through a 60,000 pound business loan at 15 percent APR over 2 years (total cost approximately 10,000 pounds in interest), the net benefit over 2 years is approximately 140,000 pounds of additional gross profit minus 10,000 pounds of interest cost.
Apply this logic to any specific growth investment: calculate the expected return, calculate the cost of the debt, and assess whether the net benefit is sufficient and achieved within a reasonable time. Investments with clear, calculable returns (equipment that generates a specific output, a sales hire with a quantifiable target, a marketing campaign with measurable ROI) are the strongest cases for debt funding.
When equity is the right choice
Equity is more appropriate than debt when: the growth plan is high-risk and the cash flows are uncertain (debt requires repayment regardless of whether the bet pays off), when the business needs scale capital beyond what debt markets can provide (pre-revenue businesses, early-stage technology, pharmaceutical), or when strategic investors bring capability (market access, technical expertise, management bandwidth) that justifies the equity cost.
The decision is not always either or. Many growing businesses combine debt for working capital and asset investment with equity for high-risk strategic initiatives. The right structure depends on the specific use of funds and the risk profile of each investment.
The bottom line
Spark Finance helps UK business owners access growth finance through debt rather than equity, across products from unsecured loans to secured property finance. Apply at apply.sparkfinance.co.uk to explore your debt-based growth funding options.
Check your eligibility
