Two finance advertisements can display similar percentages and still lead to very different costs. Before deciding which is cheaper, find out what each percentage measures. A flat-rate calculation uses the original principal throughout the term; a reducing-balance calculation applies the rate to the amount still outstanding.
What APR adds to the comparison
SAMA’s APR rules provide a standardized comparison measure based on payment timing and the cost of obtaining finance, including applicable mandatory charges. Early-settlement charges and late-payment penalties are treated separately under the rules. Ask the provider for the disclosed APR rather than trying to convert an advertisement by multiplying its rate by two.
Worked example: a flat-rate quotation
Suppose an illustrative offer finances SAR 60,000 for three years at a 4% annual flat rate, with no other costs in this simplified example.
| Item | Calculation | Result |
|---|---|---|
| Flat finance charge | 60,000 × 4% × 3 | SAR 7,200 |
| Total installments | 60,000 + 7,200 | SAR 67,200 |
| 36 equal payments | 67,200 ÷ 36 | SAR 1,866.67 approximately |
This is not a 4% APR quotation. You repay principal throughout the three years, while the flat charge was calculated on the full original amount. The effective annual comparison rate also depends on the precise cash flows and any fees; the example deliberately does not claim a regulatory APR.
Make an offer comparison sheet
Record the cash you actually receive, any upfront deduction, the number and size of payments, final lump sums and the total payable. Use identical borrowing amounts and terms. A five-year quote may have a smaller monthly payment than a three-year quote while costing more overall.
Ask whether the rate is fixed or can change, and obtain the payment schedule. For financing connected to an asset, compare the cash purchase price too: a finance offer can look attractive while starting from a higher sale price.
Use calculators with the right inputs
Our personal finance calculator helps explore payment scenarios. Do not paste a flat rate into a reducing-balance formula and assume the answer reproduces the bank’s offer. Compare the tool’s assumptions with the provider’s actual schedule, including fees and any unusual payment pattern.
For the structure behind an Islamic product, read the Tawarruq and Murabaha guide. The product’s contractual structure and its comparative cost are related questions, but one does not answer the other.
Check affordability separately
Even the lower-cost offer can be unsuitable if its payments leave no room for rent, family costs or unexpected bills. Try a scenario with lower income or a higher essential expense. Keep the comparison of prices separate from the decision about how much debt your budget can carry.
Frequently Asked Questions
Is the lowest monthly payment the cheapest finance? Not necessarily. Compare the term, total amount payable and any final payment.
Can I double a flat rate to find APR? That shortcut is not a reliable substitute for the disclosed APR and actual payment schedule.
Does APR tell me whether I will be approved? No. Pricing disclosure and eligibility assessment are different issues.