How does a loan’s interest rate work?
The interest rate is one of the most important, yet least understood, parts of a loan. This guide explains simply how it works, what makes it vary, and what the APR shown on every loan offer actually means.
What is a loan interest rate?
The interest rate is the price you pay for borrowing money. On top of repaying the capital you borrowed, you pay an extra amount each month, calculated as a percentage of that capital: the interest. The higher the rate, the higher the total cost of the loan.
Fixed rate or variable rate: what is the difference?
A fixed rate stays the same for the entire term of the loan, so your monthly payments are predictable from the first day to the last. A variable rate moves with a reference index, meaning your payments can rise or fall over time. A fixed rate is generally preferred for its certainty, while a variable rate can be worthwhile over shorter terms.
What is the APR?
The APR (Annual Percentage Rate) is the most reliable indicator for comparing two loan offers. Unlike the nominal rate, it includes all mandatory costs linked to the loan: interest, arrangement fees, loan insurance where applicable, and guarantee costs. This is the figure to always check first, rather than the headline rate in an advert.
What factors influence the rate you are offered?
- Your borrower profile: income, job stability, current debt-to-income ratio
- The loan term: the longer it is, the higher the rate generally is
- The type of loan: a secured or purpose-tied loan (auto, home improvement) often benefits from a better rate than a general-purpose loan
- The amount borrowed and your own contribution, particularly for a mortgage
- The overall economic context at the time of your application
How can you get the best possible rate?
The best way to secure a favourable rate is to present a solid application: stable income, a well-managed debt-to-income ratio, a clean payment history. Comparing several offers before committing, and choosing a repayment term that matches your real capacity, also helps optimise the total cost of your loan.
Frequently asked questions
Is the rate shown in an advert the rate I will actually pay?
Not always. The rate featured in marketing is often an ‘from’ rate, reserved for the strongest profiles. The rate actually offered to you depends on your personal application.
Why is the APR higher than the nominal rate?
Because it includes all the mandatory costs of the loan (arrangement fees, insurance, guarantee), while the nominal rate only reflects the lender’s charge on the capital.
Can I renegotiate my rate after signing the contract?
In some cases, particularly for a mortgage, refinancing with another lender can secure a better rate if market conditions have changed.
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