Some jurisdictions impose strict usury limits, limiting the nominal annual percentage rate (APR) that any lender, including payday lenders, can charge; some outlaw payday lending entirely; and some have very few restrictions on payday lenders. Due to the extremely short-term nature of payday loans, the difference between APR and effective annual rate (EAR) can be substantial, because EAR takes compounding into account. For a $15 charge on a $100 2-week payday loan, the APR is 26 × 15% = 390% but the EAR is (1.1526 − 1) × 100% = 3,685%. Careful reporting of whether EAR or APR is quoted is necessary to make meaningful comparisons.
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