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Flat rate or reducing balance? What a loan really costs

Two loans can both quote 10% and cost very different amounts. Here is why.

By the OrzyneX team, October 2026

When you borrow, the interest rate is often the first number you see. But two loans that both say “10%” can cost very different amounts. The difference is whether the rate is flat or on a reducing balance.

Flat rate

Interest is charged on the full amount for the whole loan, even as you pay it back.

Example: borrow AED 10,000 for 12 months at a 10% flat rate. The interest is AED 1,000, so you repay AED 11,000, about AED 916.67 a month.

Reducing balance

Interest is charged only on what you still owe. As you repay, the interest falls.

Same loan, reducing balance: AED 10,000 for 12 months at 10% costs about AED 879.16 a month, or about AED 10,550 in total. The interest is about AED 550.

Same “10%”, nearly double the interest. A 10% flat rate over one year costs about the same as an 18% reducing-balance rate.

Questions to ask before you sign

Look at the total, not only the monthly payment

A low monthly payment can hide a long loan or high fees. The total you repay is the number that tells you what the loan really costs.

Finangl’s loan and EMI calculators show the total cost of borrowing as well as the monthly payment, so you can compare before you commit.

This article explains general ideas and is not financial advice. Check the terms of any loan with the lender, and speak to a qualified adviser if you are unsure.

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