Finance Charge Calculator
Calculate finance charges for a credit card style balance. Enter APR, previous balance, purchases and payments to see interest owed and new balance.
Finance Charge Calculator
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Olga Chernova is an equity research analyst and final year Economics and Finance student at the American University in Bulgaria, with hands on experience in valuation and financial modeling. She has passed CFA Level I and contributed to a 2nd place team in the 2025-2026 CFA Institute Research Challenge in Bulgaria. At Eon Tools, she reviews finance tools.