Business Overdraft Alternatives That Cost UK Businesses Less
Charlotte Ellis
Head of Marketing · Aug 28, 2026 · 6 min read
The UK business bank overdraft is one of the most expensive and least secure ways for a business to access short-term working capital. Typically priced at 4-8% above base rate and legally repayable on demand, an overdraft that a business has relied upon for years can be withdrawn at short notice. Despite this, many UK SMEs use their overdraft as their primary working capital tool simply because it is familiar and convenient. The alternatives available today are in almost every case cheaper, more stable, and more flexible.
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The true cost of a UK business overdraft
An overdraft at 7% above base rate (currently around 12-13% APR in 2026) costs significantly more than most alternative working capital products. For a business consistently drawing £100,000 of overdraft, the annual interest cost is £12,000-£13,000. An equivalent invoice finance facility on a similar debtor book might cost £8,000-£9,000 annually. The saving is real and consistent year after year.
The hidden cost of an overdraft is its instability. Unlike a term loan or revolving credit facility with a contractual term, an overdraft is technically repayable on demand. Banks have historically been reluctant to call overdrafts from healthy businesses, but they have done so - and the ability to do so represents a genuine business risk that should be factored into the true cost assessment.
Revolving credit facilities
A revolving credit facility (RCF) provides the same flexibility as an overdraft - draw, repay, draw again - but with a contractual term that the lender cannot shorten without agreement. For UK businesses with £1M+ turnover, an RCF typically provides a cheaper, more secure alternative to an overdraft with comparable flexibility.
RCFs are available from high street banks, challenger banks, and specialist lenders. They typically come with financial covenants, unlike overdrafts, but the terms can be negotiated to provide appropriate headroom. The transition from overdraft to RCF is straightforward: the RCF draws down and repays the overdraft on day one, with the business then using the RCF for day-to-day working capital management.
"UK businesses that replace their overdraft with purpose-built working capital products consistently save money and improve their financial stability."
- Charlotte Ellis, Head of Marketing
Invoice finance as an overdraft replacement
For businesses with a material debtor book, invoice finance is often the most efficient replacement for an overdraft. Rather than being limited to a fixed overdraft amount, an invoice finance facility grows with your business: as you raise more invoices, more capital is available. The facility is self-liquidating as customers pay, meaning it does not accumulate in the way a term loan might.
The discipline that invoice finance requires - submitting invoices to the facility and maintaining debtor records - is often seen as a disadvantage but is in practice a management benefit. Businesses on invoice finance tend to have better visibility of their debtor book and more proactive credit control than those managing entirely through an overdraft.
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Frequently Asked Questions
Can I replace my overdraft with invoice finance even if my overdraft is secured on my property?
Yes, but you will need the bank to release their charge on the property as part of the transition. This requires coordination between the outgoing and incoming facilities but is routinely managed by brokers.
Is a revolving credit facility harder to get than an overdraft?
It requires more documentation - typically management accounts and filed accounts - but the application process is manageable. The benefit is a contractual term that provides far greater security of tenure.
What happens to my overdraft if my bank decides to withdraw it?
You would typically be given 30-90 days' notice to repay. This is why having an alternative working capital facility in place before you need it is important - transitioning under time pressure is significantly harder.
The bottom line
The business overdraft is a legacy product that survives on familiarity rather than merit. For most UK businesses, a purpose-built working capital solution - whether a revolving credit facility, invoice finance, or a combination - will provide more capital at lower cost with greater security of tenure. Spark Finance helps UK businesses review their existing working capital facilities and identify the most cost-efficient alternatives.
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