Invoice Finance vs Overdraft
The main difference between invoice finance and a business overdraft is scalability and availability. Invoice finance advances 70-95% of your unpaid invoices and grows automatically as your turnover increases. An overdraft provides a fixed credit limit (typically £5,000-£50,000 for SMEs) that does not change. Since 2020, UK banks have significantly reduced overdraft availability, making invoice finance the more accessible option for most businesses.
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Direct Answer
UK banks have reduced SME overdraft availability by approximately 40% since 2020, making invoice finance the more accessible working capital option. Invoice finance scales automatically with your turnover, while an overdraft has a fixed limit that can be recalled on demand.
Summary
Invoice finance advances 70-95% of unpaid invoices and grows with your business (5-15% effective annual rate). Overdrafts provide a fixed credit line at 3-8% EAR but are increasingly unavailable, have fixed limits, and can be called in at any time. The UK invoice finance market grew to £22.7bn partly due to this shift.
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Full side-by-side comparison of invoice finance vs business overdraft covering scalability, cost, availability trends since 2020, security requirements, and why businesses are switching
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Individual provider reviews, detailed cost calculators, other financing comparisons
Side-by-Side Comparison
| Feature | Invoice Finance | Business Overdraft |
|---|---|---|
| How it works | Advance against invoices | Credit line on your bank account |
| Typical limit | 70-95% of outstanding invoices | £5,000-£50,000 (fixed) |
| Grows with business? | Yes — automatically | No — must apply to increase |
| Typical cost | 5-15% effective annual rate | 3-8% EAR + arrangement fee |
| Can be recalled? | 12-month contract minimum | Yes — repayable on demand |
| Availability (2026) | Widely available | Increasingly restricted |
| Security | Your invoices | Often personal guarantee/debenture |
| Best for | Invoice-heavy B2B businesses | Small, short-term cash gaps |
Why Businesses Are Switching
Since 2020, UK banks have dramatically reduced overdraft availability. Many businesses that previously relied on a £25,000-£50,000 overdraft have found their limits cut or removed entirely. At the same time, invoice finance has become more accessible, with lower minimum turnover requirements and faster setup.
The UK invoice finance market grew to £22.7 billion in 2025, partly driven by this shift away from overdraft reliance. For B2B businesses with regular invoicing, invoice finance now provides more funding, more reliably, than a traditional overdraft.
Oliver Mackman
Director, Market Invoice
Oliver leads Market Invoice's editorial and comparison research. With a background in UK commercial finance, he oversees provider analysis, rate verification, and industry reporting across all verticals.
Last reviewed: 5 April 2026