Two short-term loans can advertise the same representative APR and still cost very different amounts to repay. The headline rate is only one input, and on a few-week product, it tells you the least. This matters whether you are assessing short-term credit for yourself, for a small business, or as part of a wider study of consumer finance.
The skill is the same in each case: knowing which number to compare and which charges never appear in the advertised figure. This article explains how short-term credit is priced and how to compare two offers on a like-for-like basis.
Why Does APR Behave Strangely on Short-Term Credit?
Annual Percentage Rate expresses the cost of credit as a yearly figure. That works well for a mortgage or a car loan, where the borrowing genuinely lasts years and APR lets you compare products of different lengths on one scale. Apply the same method to a 30-day loan, and the arithmetic produces very large numbers. A small fee relative to the loan can look enormous when annualized, even if the loan lasts only weeks.
This is why short-term credit routinely advertises APRs in the hundreds or thousands. Two consequences follow. First, a very high APR on a short-term product does not by itself prove the loan is poor value, because the figure is an annualized projection rather than what you will pay. APR is less useful for comparing short-term loans because small differences in loan duration can distort annualized costs.
The FCA requires lenders to display a representative APR, and that requirement serves a real purpose. However, lenders define a representative APR as the rate they offer to at least 51% of accepted applicants, so your offered rate may differ from the advertised rate.
Comparing Short-Term Credit: The Total Amount Repayable
If APR distorts, what should you use instead? For short-term credit, the single most useful figure is the total amount repayable: the sum you will hand back across the whole agreement, including interest and every compulsory charge.
Consider two offers on the same 400 pounds borrowed:
| Loan Details | Lender A | Lender B |
| Amount Borrowed | 400 | 400 |
| Term | 30 days | 60 days |
| Interest Charged | 60 | 88 |
| Compulsory Fees | 0 | 12 |
| Total Repayable | 460 | 500 |
| Cost Per 100 Borrowed | 15.00 | 25.00 |
Lender B costs 40 pounds more in absolute terms, but the comparison is not that simple because the borrower holds the money twice as long. The useful question is what each costs per pound borrowed per day, and on that basis the two are much closer than the totals suggest. This is the discipline worth building: convert every offer to a total repayable figure, then express it against both the amount borrowed and the time you hold it. Comparison services that list the best payday loans alongside their total repayable amounts make this easier than working through individual lender pages.
However, always check the figures against the lender’s pre-contract information before you sign. Under the FCA price cap, short-term high-cost credit in the UK cannot charge more than 0.8% per day in interest and fees; default charges are capped at £ 15, and total charges can never exceed the amount borrowed. A 400-pound loan can therefore never require more than 800 pounds in repayment, no matter what happens.
Short-Term Credit Charges That Sit Outside the Headline Rate
The advertised cost assumes everything goes to plan. Most of the difference between a manageable loan and an expensive one comes from clauses that apply when things go wrong.
- Default and Late Payment Charges: Capped at 15 pounds for high-cost short-term credit, but interest continues to accrue on the outstanding balance alongside the fee.
- Rollover and Refinancing: Extending the term converts a one-off cost into a recurring one. UK rules limit a lender to two rollovers on the same agreement, which is a meaningful protection, but two rollovers still roughly triple the period over which interest accrues.
- Continuous Payment Authority: Most short-term lenders collect by CPA, which lets them charge your card without asking each time. Lenders are limited to two unsuccessful attempts before they must contact you, and you can cancel the authority with your bank. Many borrowers do not know either.
- Early Settlement: You have a statutory right to repay early and receive an interest rebate. The rebate varies by agreement, and some make early settlement less valuable than borrowers expect.
- Broker Fees: If you apply through an intermediary rather than a lender, check whether a separate fee applies and whether it is refundable if no loan is offered.
None of these appear in a representative APR. All of them appear in the pre-contract credit information, which lenders must provide before you commit.
How to Compare Two Short-Term Credit Offers Properly?
A method you can apply to any two short-term credit products:
- Write down the Total Repayable for Each: Not the interest, not the rate, the full sum leaving your account.
- Divide by the Amount Borrowed: This gives cost per pound, which strips out differences in loan size.
- Divide again by the Number of Days: Now you have cost per pound per day, which is the only basis on which products of different lengths compare fairly.
- Add the Realistic Failure Cost: Take the default fee plus one rollover and recalculate. If one lender looks competitive until something goes wrong, you have learned something the headline figures would not have told you.
- Check the Lender is Authorized: Search the FCA Register to verify the lender’s authorization. Unauthorized lenders can avoid the price cap, rollover limit, and formal complaints process, so a cheap-looking offer from them may not be a bargain.
Steps one to three take a few minutes. Most borrowers skip step four, and it is usually where the real difference between two offers shows up.
Final Thoughts
The cost of short-term credit is knowable, but not from the number lenders lead with. Lenders design APR for long-term borrowing, but it can produce misleading comparisons for loans that last only a few weeks. The total amount repayable, expressed per pound and per day, tells you what you need, and the clauses governing default, rollover, and early settlement tell you what the loan costs when circumstances change.
For anyone studying consumer finance, this illustrates a wider principle: regulated disclosure is not the same as a meaningful comparison. The figure a lender must publish and the figure that answers your question are often different, and knowing which is which is most of the skill. MoneyHelper offers free borrowing guidance, while StepChange and Citizens Advice provide free debt advice.
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