How to Calculate a Credit Card Surcharge on a Selling Price
- 1). Determine the total final price charged on your credit card. Say, for instance, the amount is $5.00.
- 2). Determine the selling price for the product you purchased and deduct it from the total amount charged. For instance, if the selling price is $3.00, the remaining amount is $2.00.
- 3). Deduct the sales tax fee for the product (if it is a taxable item) based on the tax rate for the state where you purchased the item. If the sales tax rate is 7 percent, the sales tax fee in this example is $0.21 ($3 times .07). The total amount of the credit card surcharge is $2.00 less $0.21 or $1.79.
- 4). Divide the credit card surcharge by the selling price if you want to determine the surcharge as a percentage of the selling price. In this case, it is $1.79 divided by $3 or 60 percent.
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