APR or flat fee: putting two small loan offers on the same footing
Field notes · Updated November 6, 2026
Two offers for the same amount can be priced in two different languages: one shows an annual percentage rate (APR), the other shows a flat fee per hundred borrowed. The way to compare them is to translate both into the same two numbers: the total you will repay, and the APR. Federal truth-in-lending rules require a lender to disclose the APR and the finance charge before you sign, so both numbers should be on every offer you receive. If one is missing, the offer is not finished.
Why a lower fee can cost more than a higher APR
A flat fee hides the time. Paying 15 per hundred borrowed sounds smaller than an APR in the hundreds, but if the loan is due in two weeks, that 15 percent charge is being paid for 14 days of borrowing. Stretched across a year, the same price repeats about 26 times, which is how a two-week fee turns into an APR near 390 percent. An installment loan with a higher-sounding APR but a longer term may have a lower cost per week, or a higher total cost over the whole term. Neither headline number tells you which; the arithmetic does.
Put both offers through the same four lines
- Amount financed. What actually lands in your account, after any fee taken off the top.
- Finance charge. Every dollar of interest and fees over the life of the loan. On a flat-fee loan this is the fee. On an installment loan it is the sum of the interest portions of every payment plus any origination fee.
- Total of payments. Amount financed plus finance charge. This is what the loan costs you in the end.
- APR. The finance charge expressed as a yearly rate on the amount financed, taking the term into account. This is the only number that lets a two-week loan and a six-month loan be read on the same scale.
Write the four lines for each offer side by side. The offer with the lower total of payments costs less in cash; the offer with the lower APR costs less per unit of time. When you can repay quickly, the first matters more. When repayment will take the full term, the second usually wins.
A worked comparison
| Line | Offer A: flat fee, 14 days | Offer B: installment, 6 months |
|---|---|---|
| Amount financed | 500 | 500 |
| Finance charge | 75 (15 per hundred) | About 230 in interest at a 150% APR |
| Total of payments | 575, due in one payment | About 730, in six payments of about 122 |
| APR | About 390% | 150% |
Offer A costs less in total if, and only if, you can pay 575 in two weeks without rolling it over. If you would need to extend it twice, its finance charge climbs past Offer B's while the balance never shrinks. Offer B costs more over six months but each payment is smaller and the balance falls every month. The question to ask yourself is honest and specific: which of these can I actually pay on the dates shown? Your debt-to-income ratio with the new payment included is a good way to answer it.
Things to read before the signature line
- Due dates against your pay dates. A payment due two days before your deposit lands is a late fee waiting to happen. Ask whether the lender can align them.
- Rollover and renewal terms. If a loan can be extended, the extension fee is the number that decides the real cost. Some states restrict rollovers; the offer should say what applies to you.
- Prepayment. Paying an installment loan off early should reduce the interest you pay. Check for any prepayment penalty.
- Late and returned-payment fees. Listed separately from the finance charge. Read them anyway.
- The Military Lending Act cap. Active-duty service members and their dependents are generally protected by a 36 percent cap on the Military APR for most consumer credit. If that applies to you, the offer must reflect it.
How this works on AssessLending
AssessLending is a loan connection service, not a lender. One request for $100 – $5,000 is carried to a network of lenders and lending partners, and each one that chooses to make an offer sets its own rate, fees and dates. Nothing obliges you to accept any offer, and nothing is owed for looking: checking your options won't affect your credit score, and a fuller check only happens if you go ahead with a specific lender. Put every offer through the four lines above before you say yes. If a lender said no instead, our guide on reading an adverse action notice explains what to do next.
The figures in the table are illustrations to show the arithmetic, not quotes. Representative APRs on short-term loans vary widely by lender, state and term and can exceed 200 percent; your offer will state its own.
Short answers
Is a flat fee the same as interest?
For comparison purposes, yes: it is a finance charge and it must be expressed as an APR on the disclosure. The label does not change the cost.
Why is the APR on a two-week loan so high?
Because APR annualizes the charge. A modest fee for a very short term becomes a large yearly rate when it is scaled to twelve months.
Which number should I look at first?
Total of payments, then the due dates. Then the APR to compare offers of different lengths.