Annual Percentage Rate (APR)
Quick Definition
The yearly cost of borrowing money, expressed as a percentage, including interest and fees — the standard rate disclosed on loans and credit cards.
Key Takeaways
- APR includes interest AND fees — the true cost of borrowing expressed annually
- Mandated disclosure under U.S. Truth in Lending Act for standardized comparison
- APR does NOT account for compounding — that's what APY measures
- For savings, APY matters; for borrowing, APR matters
- Payday loans often exceed 300% APR — always check this number before borrowing
What Is Annual Percentage Rate (APR)?
Annual Percentage Rate (APR) is the annualized cost of borrowing money, expressed as a percentage. It includes the nominal interest rate plus most fees and costs associated with the loan, making it the standardized figure used for comparing borrowing costs across different lenders and products. In the U.S., lenders are legally required to disclose APR under the Truth in Lending Act (TILA).
APR vs. Interest Rate:
| Interest Rate | APR | |
|---|---|---|
| What it includes | Interest only | Interest + fees |
| More useful for | Monthly payment calculation | Comparing loan cost |
| Always higher? | No | Yes (or equal, if no fees) |
APR Formula: APR ≈ (Fees + Total Interest / Principal) / n × 365
Where n = number of days in the loan term
Types of APR:
- Fixed APR: Stays the same throughout the loan term
- Variable APR: Fluctuates based on a benchmark rate (like Prime Rate + margin)
- Purchase APR: The rate applied to credit card purchases
- Cash Advance APR: Usually higher than purchase APR
- Penalty APR: Applied after missed payments (often 29.99%)
- Promotional APR: Temporary low rate (e.g., 0% for 12 months)
APR vs. APY: APR does not account for compounding within the year. APY (Annual Percentage Yield) does. For savings accounts, APY is more relevant (tells you what you actually earn). For loans, APR is more relevant (tells you what you actually pay). A loan with 12% APR compounded monthly has an APY of approximately 12.68%.
Real-World APR Examples (typical ranges):
- 30-year mortgage: 6.5%–7.5%
- Auto loan: 5%–10%
- Personal loan: 8%–30%
- Credit card: 18%–29%
- Payday loan: 300%–400% APR (!!)
Understanding APR is fundamental to avoiding high-cost debt and comparing financing options.
Formula
Formula
APR = [(Fees + Interest / Principal) / n] × 365Annual Percentage Rate (APR) Example
- 1You take a $10,000 personal loan with 10% stated interest rate but $200 in origination fees over 2 years. The APR (including fees) might be 11.2% — higher than the stated rate
- 2A credit card advertises 0% APR for 15 months — after that, the regular APR of 24.99% applies to any remaining balance
Related Terms
Annual Percentage Yield (APY)
The real annual return on savings or investment, accounting for compound interest — always higher than the stated APR when compounding occurs.
Compound Interest
Interest calculated on both the initial principal and accumulated interest from previous periods, creating exponential growth over time.
Simple Interest
Interest calculated only on the original principal amount, without compounding on previously earned interest — resulting in linear rather than exponential growth.
Interest Rate
The cost of borrowing money or the return earned on savings/lending, expressed as a percentage of the principal over a specific time period.
Credit Score
A numerical rating (typically 300-850) that represents a person's creditworthiness based on their credit history.
Dividend
A distribution of a company's profits to shareholders, typically paid quarterly in cash or additional shares.
Expand Your Financial Vocabulary
Explore 130+ financial terms with definitions, examples, and formulas
Browse General Investing Terms