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True Cost of Credit Calculation with AI

The true cost of credit is the total amount you pay for a loan or credit card balance — principal plus all interest, fees, and the opportunity cost of the cash flow committed to repayment — rather than just the interest rate stated on the account. AI can calculate the true cost of specific debt scenarios and compare them against alternatives. This concept covers true cost calculation as the honest metric for evaluating credit decisions.

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Why It Matters

The true cost of credit is the total amount you actually pay for a purchase when interest, fees, and the time value of money are factored in — revealing that a $1,200 couch financed at 24% APR over two years costs significantly more than the sticker price.

Credit card minimums and 'zero-interest' promotions routinely obscure how expensive borrowing really is; AI can instantly calculate the full repayment cost of any credit decision and compare it against saving up first, empowering smarter borrowing choices.

How to apply it

Give Claude a purchase amount, interest rate, and your intended monthly payment, then prompt: 'Calculate the true total cost of this purchase including all interest paid, show how long it takes to pay off, and compare what I'd save if I instead set aside that same monthly amount until I could pay cash.'

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