Guides Loans & Financing

Understanding APR vs Interest Rate

8 min read Educational Guide Updated March 07, 2026
Guide note: Written by the FundJos Editorial Team and reviewed for calculator consistency on March 07, 2026. This guide is for general educational purposes only and is not legal, tax, insurance, investment, or financial advice.

Interest Rate vs APR

The interest rate is the cost of borrowing the principal amount - the base rate lenders charge. APR (Annual Percentage Rate) includes the interest rate PLUS fees and closing costs, giving you the true annual cost of borrowing.

Example

Loan A: 6% interest, $5,000 fees on $100,000 = 6.55% APR. Loan B: 6.5% interest, $2,000 fees on $100,000 = 6.73% APR. Loan A is cheaper despite higher stated rate. APR reveals the true cost.

Key Takeaways

Use APR to compare loans accurately. The lowest APR means the lowest total cost of borrowing.