What is a balance transfer fee?
Most credit cards that offer a 0% introductory APR on balance transfers charge a one-time fee when you move debt over from another card. This fee is typically a percentage of the amount transferred (commonly 3% to 5%), but issuers often apply a flat minimum (such as $5 or $10) so that even small transfers carry a charge. This calculator shows exactly how much that upfront fee will be and what your new balance will look like.
How to use it
Enter the amount you plan to transfer, the percentage fee charged by the new card, and the flat minimum fee (check the card's terms). The calculator multiplies the amount by the percentage, compares it to the minimum, and charges whichever is larger. It then adds the fee to your transfer amount to show the total balance you will owe on the new card.
The formula explained
The percentage fee is \( \text{amount} \times (\text{fee\_pct} \div 100) \). The fee actually charged is \( \max(\text{flat\_min},\ \text{percentage fee}) \), because the issuer applies whichever is greater. Finally, \( \text{Total} = \text{amount} + \text{Fee} \) is the balance that begins accruing during your introductory period.
$$\text{Fee} = \max\!\left( \text{Minimum Fee},\ \text{Amount} \times \frac{\text{Fee Rate (\%)}}{100} \right)$$
$$\text{Total} = \text{Amount} + \text{Fee}$$
Worked example
Suppose you transfer $5,000 with a 3% fee and a $5 minimum. The percentage fee is $$\$5{,}000 \times 0.03 = \$150$$ Since $150 is greater than the $5 minimum, the fee charged is $150. Your total transferred balance becomes $$\$5{,}000 + \$150 = \$5{,}150$$
FAQ
When does the minimum fee matter? Only on small transfers. For example, transferring $100 at 3% gives a $3 percentage fee, so a $5 minimum would apply instead.
Is the fee worth paying? If the interest you would save during the 0% intro period exceeds the fee, a balance transfer usually pays off. Compare the fee against your current interest charges.
Does the fee earn interest? Yes — the fee is added to your balance, so it can accrue interest once any promotional period ends.
