{"schemaVersion":"1.0","index":"balance-carrier-cost","description":"Annual interest cost of carrying a representative balance on a typical credit card vs. best available alternatives.","avgApr":21.5,"bestOngoingApr":12,"introApr":0,"introMonths":15,"representativeBalance":5000,"annualCostAvg":1075,"annualCostOngoing":600,"annualCostIntro":0,"gapVsIntro":1075,"gapVsOngoing":475,"balanceTiers":[{"balance":2000,"annualCostAvg":430,"annualCostOngoing":240,"annualCostIntro":0},{"balance":5000,"annualCostAvg":1075,"annualCostOngoing":600,"annualCostIntro":0},{"balance":10000,"annualCostAvg":2150,"annualCostOngoing":1200,"annualCostIntro":0},{"balance":20000,"annualCostAvg":4300,"annualCostOngoing":2400,"annualCostIntro":0}],"sources":{"avgApr":"FRED G.19 TERMCBCCINTNS — Federal Reserve Consumer Credit (Q1 2026)","representativeBalance":"Federal Reserve Survey of Consumer Finances — median revolving balance among revolvers"},"updatedPeriod":"Q2 2026","methodology":"https://www.switchwize.com/cards/carrier-cost"}