Two rates describing different parts of borrowing cost
Two offers may advertise similar nominal rates while one costs more because of origination or other required charges. The nominal rate describes the interest or profit rate applied to the balance under the contract. APR aims to standardize the annualized cost comparison by including applicable fees and costs.
What is the nominal rate?
It is the percentage used to calculate finance charges on the balance over a stated period. In a conventional amortizing-loan model, the annual rate is converted to a periodic rate and applied to the remaining balance. On its own, this figure does not reflect origination fees, commissions, required insurance, or other charges.
What is APR?
The Saudi Central Bank's rules define APR as the discount rate at which the present value of payments and installments due from the borrower equals the present value of financing amounts made available to the borrower. They describe total finance cost as potentially including term cost, fees, commissions, administrative services, insurance, and charges required to obtain finance, with exclusions such as avoidable breach-related costs.
In practical terms, APR asks not only “what is the interest rate?” but “what is the annualized cost after including covered cash flows and fees?” Application varies by product and jurisdiction, so use a licensed provider's disclosure for contractual comparisons.
A worked example of fees changing APR
Assume two offers for 50,000 over 36 months with fixed monthly payments:
| Item | Offer A | Offer B |
|---|---|---|
| Nominal rate | 5% | 4.5% |
| Assumed upfront fee | Zero | 1,500 |
| Approximate monthly payment | 1,498.54 | 1,487.35 |
| Amount available after fee deduction | 50,000 | 48,500 |
| Approximate nominal annual APR from cash flows | 5% | About 6.54% |
Offer B has the lower nominal rate and payment, but this simplified example calculates payments on 50,000 while only 48,500 is made available after fees. Solving the monthly cash-flow rate and multiplying by 12 gives APR of about 6.54%. Contractual timing, rounding, and covered items can differ; use the official disclosure.
When should APR be used?
- When comparing similar finance products with the same general structure, amount, and term.
- When upfront fees or required charges differ.
- When one offer has a lower payment but higher fees.
Do not compare one offer's APR with another's nominal rate, and do not let APR replace total paid or the monthly installment. For variable-rate products, APR does not predict the maximum future cost; it is calculated using stated assumptions.
Common mistakes
- Assuming APR is just another label for the nominal rate.
- Comparing different products or terms without reading the assumptions.
- Ignoring total paid, balloon payments, and early-settlement terms.
- Adding avoidable fees or excluding required charges without a basis.
- Expecting APR to include every possible cost, such as late-payment charges that may be excluded.
Frequently asked questions
Is APR always higher than the nominal rate?
It is often higher when covered fees exist, but the relationship depends on cash flows, terms, and the calculation method. With no additional covered costs, the two may be close.
Does the lowest APR make an offer best for everyone?
Not necessarily. Review the payment, total paid, term, liquidity needs, early-settlement rules, and risks rather than one number.
Is APR an effective annually compounded rate?
It may be disclosed as a nominal annual rate derived from a periodic rate under applicable rules, which can differ from an effective annual rate. Read the definition and methodology used.
Sources and references
- Saudi Central Bank — Rules Governing Calculation of APR: definition, total cost, and comparability. Accessed 2026-11-06.
- CFPB — Loan interest rate versus APR: additional explanation of rates and fees.
- The example is hypothetical. Its monthly cash-flow rate was solved numerically and multiplied by 12; it is not a substitute for a contractual calculation.