Effective APR (sometimes called effective annual rate, or EAR) is the true annual cost of borrowing accounting for compounding. It answers the question: “if I borrow $X today and pay it back in equal monthly installments, what is the actual yearly cost?”
Effective APR vs nominal APR
Nominal APR is the stated yearly rate. Effective APR adjusts for compounding frequency. For monthly-compounding equipment loans:
Effective APR = (1 + nominal APR / 12)^12 – 1
A loan with 12% nominal APR has an effective APR of about 12.68%.
Why this matters for comparing offers
Most lenders quote nominal APR. If two lenders quote the same APR but compound differently (e.g., one monthly, one daily), the actual cost differs. Effective APR strips out the compounding ambiguity.
In practice
Standard equipment loans amortize monthly. Compounding is monthly. The effective APR is typically 0.3 to 0.7 percentage points higher than the nominal APR. The calculators on this site show monthly payments; the difference between nominal and effective APR rarely changes a decision.
Watch out for daily-compounding products
Some merchant cash advances and revenue-based financing products compound daily, making the effective APR much higher than the headline rate. Always ask: “what is the all-in cost as an annual percentage rate?”
