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Credit card companies can change variable APRs at any time, as they are determined by adding a fixed margin to a benchmark interest rate that can fluctuate based on market conditions. There is no set schedule or frequency for these changes, although they are typically more likely to occur in response to changes in the economy or market conditions. Read More: https://akhilamtech.blogspot.com/2023/04/how-often-do-credit-card-companies.html