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Channel: How do credit card payments work? What ensures the retailer charges the right amount? - Personal Finance & Money Stack Exchange
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Answer by stoj for How do credit card payments work? What ensures the...

When you give your credit card number and authorize a merchant to charge your credit card, the merchant then gives the information to their merchant processor which in turns bills the bank that issued...

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Answer by Matthew Read for How do credit card payments work? What ensures the...

Your credit card limit is nothing more than a simple number. When you purchase something, the merchant receives a number (i.e. the amount of the transaction) from your card company (e.g. Visa) in their...

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How do credit card payments work? What ensures the retailer charges the right...

If I buy book from an online shopping site via my credit card, how can the retailer get money from my credit card? What is in place to ensure the retailer gets the exact amount of money I should pay,...

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