Two borrowing examples can display attractive percentages while measuring different things. An interest rate beside one offer and an annual percentage rate beside another are not a like-for-like comparison.
The CFPB’s explanation of loan interest and APR, in the US auto-loan context, explains that APR includes interest and additional loan charges. The interest rate alone does not capture that broader measure.
Make the comparison table before choosing
Write separate lines for amount financed, term, interest rate, APR, payment schedule and stated fees. Record any conditions that determine whether an advertised offer applies. A lower monthly payment may reflect a longer term rather than a lower overall cost.
For a reading exercise, imagine one book example supplies a 6% interest rate but omits APR, while another supplies a 7% APR. You cannot conclude from those two numbers alone that the first has the lower comparable borrowing cost. The missing disclosure is the next question to ask.
Do not calculate total interest by multiplying APR by the initial balance and the number of years; repayment timing makes ordinary instalment-loan calculations more involved.
This article explains how to read labels, not which loan suits a reader. For a real comparison, obtain the current full terms and seek qualified help if the costs or obligations remain unclear.
Editorial illustration from this site’s image library; not documentary evidence of the example or object discussed.