A cash advance can feel like the fastest way out of a tight spot. But “fast” and “cheap” are different questions, and the only way to tell what a cash advance will really cost you is to understand APR properly – not the marketing version, the regulatory one. This guide explains what APR actually measures, why short-term borrowing costs can look alarming even when the pound-and-pence cost is modest, and what UK law actually caps.
What APR is actually measuring
Annual Percentage Rate (APR) expresses the total cost of borrowing – interest plus most mandatory fees – as if it ran for a full year, so that different credit products can be compared on a like-for-like basis. That annualising is exactly why short-term products post headline APRs that look extreme: a relatively small pound charge over a short term can still produce a very high annualised APR once it’s stretched out to a 365-day comparison.
This doesn’t mean the percentage is fake or manipulated – it’s a standardised calculation every regulated lender has to use. It does mean that for short-term credit, the APR alone tells you less than it would for a mortgage or a car loan. What actually matters for a cash advance is the total amount you’ll repay in pounds, over the actual term you’re borrowing for.
Representative APR: why the rate you’re quoted may not be your rate
Under the Financial Conduct Authority’s (FCA) rules on financial promotions, a lender advertising a headline APR must use a “representative APR” – the rate at or below which the firm reasonably expects at least 51% of successful applicants to actually be offered. In other words, the advertised rate is a majority threshold, not a personal quote – it’s set so most successful applicants would be offered that rate or better, not a straight average or midpoint. Your own rate depends on your credit history, income and the lender’s own risk assessment, and it can be higher or lower than the number in the advert.
This is a legal requirement, not a courtesy: the FCA Handbook sets it out in detail (CONC 3.5), and the definition of “representative APR” itself is written into the Handbook glossary. If a lender’s advertised rate seems too good relative to what you’re actually offered once you apply, that gap is the representative-APR mechanism at work, not necessarily a bait-and-switch – but it’s still worth comparing the actual offer you receive, not just the advert that brought you there.
What UK law actually caps on short-term credit
Since January 2015, the FCA has enforced a price cap specifically on high-cost short-term credit (the regulatory category that includes traditional payday-style lending). It has three parts:
- Daily cost cap: interest and fees together cannot exceed 0.8% of the amount borrowed per day.
- Default fee cap: if you miss a payment, fixed default fees cannot exceed £15.
- Total cost cap: whatever happens, you can never be required to repay more than 100% of the amount you borrowed in interest and fees combined – in plain terms, you will never pay back more than double what you borrowed, however long it takes.
To make that concrete: at the absolute maximum the law allows, borrowing £200 for 30 days could carry up to £48 in interest and fees (0.8% x 30 days = 24% of £200), taking the total repayable up to £248. That’s the ceiling, not a typical rate – representative APRs and actual charges vary considerably between FCA-authorised lenders, and many sit well under the legal maximum. But knowing where the ceiling is means you can immediately spot a quote that shouldn’t be legal.
Cash advances aren’t all the same product
“Cash advance” covers more than one type of borrowing, and they’re regulated differently:
- High-cost short-term credit (the payday-loan-style product) is subject to the FCA price cap described above.
- Credit card cash advances – withdrawing cash against your card – are ordinary consumer credit, not high-cost short-term credit, so the 0.8%-a-day cap doesn’t apply to them. Card issuers typically charge an upfront cash advance fee (commonly a percentage of the amount withdrawn, or a flat fee, whichever is higher) and interest starts accruing immediately, with no interest-free grace period the way a normal purchase might have.
- Line-of-credit and overdraft-style products have their own separate cost structures again, usually a daily or monthly rate rather than a single price-capped fee.
Because the rules differ, “what’s the APR” isn’t the only question – you also need to know which category of product you’re looking at, since that determines which protections apply.
A short checklist before you compare offers
- Look at the total amount repayable, not just the headline rate or the monthly figure.
- Confirm whether the product is high-cost short-term credit (price-capped) or a different type of credit (not price-capped in the same way).
- For high-cost short-term credit, check that any default fee is £15 or less, and that you’ll never be asked to repay more than double what you borrowed – if a quote breaches either, it isn’t a lawfully compliant FCA product.
- Check the lender’s Financial Services Register status before applying (covered in detail in our guide to spotting predatory lenders).
Once you understand what you’re actually being asked to repay, it’s much easier to compare products properly – our compare options page lists FCA-regulated short-term credit providers side by side so you can see representative APRs and terms together.
Sources: FCA – Price cap on high-cost short-term credit; FCA Handbook CONC 3.5 – Financial promotions about credit agreements not secured on land; FCA Handbook Glossary – representative APR.