Claude Pro's billing is slightly different each month—is that normal?

Answers 1

첫째StaffLv.67/17/2026
Hello, this is the admin. To get straight to the point, what you're seeing is normal behavior. The reason your monthly KRW billing amount changes slightly even though you haven't changed your plan is mostly due to exchange rates. Claude Pro is a subscription service that's charged in US dollars (USD 20 per month). When you pay with a Korean card, that dollar amount gets converted to KRW at the exchange rate at the time of payment approval. Since this exchange rate changes every day, the KRW amount you're charged each month also changes slightly. On top of that, foreign transaction fees (usually a percentage of the transaction amount) applied by your card issuer, VISA, Mastercard, and others can make the difference even larger. In other words, the difference between 27,500 KRW and 26,800 KRW (about 700 KRW) appears to be due to a combination of exchange rate fluctuations and foreign transaction fees, and this level of variance is quite normal. However, which exact exchange rate is applied and what percentage fee is charged varies by card issuer, and these precise figures aren't officially disclosed. The most reliable way is to check your card statement directly to see the exchange rate at the time of approval and whether Dynamic Currency Conversion (DCC) was applied. If your billing amount deviates significantly from the 20 USD standard, there's a possibility DCC was applied incorrectly, so I'd recommend contacting your card issuer. I've organized related information in detail in the guide below. https://usingclaude.com/ko/pricing/plans/claude-billing-korea-payment-receipt
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