Working Capital Finance for UK Small Businesses: What the Options Actually Are

Cash flow is not the same as profit. A business can be profitable on paper and unable to pay its suppliers because the money it is owed has not arrived yet. Working capital finance exists to bridge this gap: the space between outgoing costs and incoming revenue.

Understanding what the available options are, how they are structured, and what they actually cost prevents the common mistake of using the wrong product for the wrong purpose.

What working capital finance is and is not

Working capital finance is short-to-medium-term borrowing designed to smooth the timing mismatch between spending and receiving. A business buys stock in January, sells it in February, but does not collect payment until March. Working capital finance bridges January to March.

It is not the same as growth funding. A business that needs to invest in a new kitchen, expand to a second premises, or develop a product is looking at a different category of finance: longer-term lending, equity investment, or asset finance specific to the capital investment.

Using working capital finance for long-term purposes is expensive and creates a pattern of rolling over short-term debt. Using long-term finance for working capital creates unnecessary complexity and cost. Matching the financing structure to the purpose is the starting point for any finance decision.

Invoice finance

Invoice finance is the most direct solution for businesses with a specific timing problem: they issue invoices to other businesses and wait 30, 60, or 90 days for payment.

The mechanism is straightforward. The finance provider advances up to 90% of the face value of an invoice when it is issued. The business receives cash immediately. When the customer pays the invoice, the provider takes back the advance plus a fee. The remaining percentage of the invoice value, minus the fee, is released to the business.

Two main variants exist. Invoice discounting keeps the credit control function with the business: the business still chases payment, and customers may not know the invoice has been financed. Invoice factoring transfers credit control to the finance provider: the provider chases payment directly, and customers are aware of the arrangement.

Invoice finance is most suitable for businesses with regular B2B invoiced revenue, established customer relationships, and invoices above a minimum value threshold. It is not suitable for consumer-facing businesses that take payment at the point of sale, or for businesses where invoices are disputed frequently.

Business funding repaid from card sales

Often referred to as a merchant cash advance, this type of business funding provides a lump sum advance repaid as a fixed percentage of daily card takings. It is not a loan in the traditional sense: there is no fixed monthly repayment. Repayment rises when the business has a good month and falls when it has a quiet one.

The total repayment is determined by a factor rate, not an interest rate. A factor rate of 1.25 on a £20,000 advance means the total repayment is £25,000. The factor rate is fixed at the point of agreement. The time it takes to repay depends entirely on the volume of card sales.

This structure suits businesses with variable revenue and significant card payment volume: restaurants, bars, coffee shops, salons, and retail shops. The cost expressed as an APR equivalent is typically higher than a bank loan, but the accessibility and the revenue-linked repayment structure make it appropriate for businesses that cannot access conventional lending.

Key considerations: understand the factor rate and the total repayment in pounds before signing. Ask what percentage of daily card takings the repayment will represent. Calculate whether the remaining daily cash flow is sufficient to cover your operating costs. Some providers take a high daily percentage that leaves the business cash-constrained during normal trading.

Revolving credit facilities

A revolving credit facility is a pre-agreed borrowing limit that can be drawn down, repaid, and redrawn repeatedly during the facility term. Interest is charged only on the amount drawn at any given time. When the balance is repaid, the full limit is available again.

This structure suits businesses with variable short-term cash flow needs that are predictable in aggregate but not in specific timing. A trade supplier that needs to fund stock purchases monthly but collects payment within 60 days has a regular, repeating cash flow gap. A revolving facility can be drawn at the start of each stock cycle and repaid when customer payments arrive.

The cost is the interest rate on the drawn balance plus any facility fee (a charge for having the limit available regardless of whether it is drawn). Compare the all-in cost including facility fees, not just the interest rate.

A revolving credit facility is distinct from a business overdraft in one important way: overdrafts are technically repayable on demand, meaning the bank can reduce or remove the limit at any time. A revolving facility has agreed terms for its duration. For businesses that depend on the facility for regular working capital, this distinction matters.

Business overdrafts

A business overdraft is the most familiar form of working capital borrowing: a negative balance limit agreed with your bank that can be used when the account goes below zero. Interest applies on the overdrawn balance.

Overdrafts are suitable for very short-term, irregular cash flow gaps: a delayed customer payment this week that resolves next week, or a quarterly tax payment that temporarily empties the account. They are not suitable as a primary working capital facility because they are repayable on demand and limits can be reduced without notice.

Many businesses find their overdraft limits insufficient for meaningful working capital support. Banks have become more cautious about extending overdraft facilities to small businesses, particularly those without property assets. For businesses that need reliable, larger-scale working capital, a structured facility is more appropriate than relying on an overdraft.

Asset finance

Asset finance is not strictly working capital finance but is relevant for businesses whose cash flow gap arises from equipment costs. Rather than paying for machinery, vehicles, kitchen equipment, or technology upfront, asset finance spreads the cost over the useful life of the asset.

The two main forms are hire-purchase (the business owns the asset at the end of the term) and leasing (the finance company retains ownership and the business pays for use). Both free up working capital by preventing a large upfront payment.

Asset finance is secured against the asset itself rather than business assets generally, which makes it accessible to businesses that do not own property. The cost depends on the asset type, term length, and the provider's assessment of the asset's residual value.

Comparing the true cost

Working capital products use different cost expressions. APR for loans and overdrafts. Factor rates for business funding. A combination of discount rates and fees for invoice finance. These cannot be directly compared without converting to a common basis.

The clearest comparison method is to ask each provider: what is the total cost of this facility in pounds over the likely term? This removes the comparison problem. A business funding advance costing £5,000 on a £20,000 facility and a loan charging £4,000 in interest can be compared directly on that basis, regardless of how the headline rate is expressed.

Additional costs to factor in: arrangement fees, early repayment fees if you may want to clear the facility early, and any account maintenance charges. These are not always prominent in headline proposals but affect the total cost.