Balance transfer arbitrage means borrowing at 0% to park the cash in high-yield savings. The 3% to 5% transfer fee and income tax take most of the interest, and anything owed when the 0% ends gets the card’s regular rate, often over 20%. Pass on it and save your 0% offers for high-interest card debt.
The offers that make it tempting arrive in your mailbox or your card account. Some issuers will turn a 0% balance transfer into a check or a direct deposit to your bank account, and online the trade gets sold as free money.
Run the numbers before you take one. Move $10,000 with a 3% fee and you owe $300 the day it lands. Park it at 4% for 15 months and it earns about $500, which puts you roughly $200 ahead.
Then taxes take their share. Savings interest counts as taxable income, so in the 22% bracket that $500 shrinks to about $390. After the fee, you clear under $100 for carrying a $10,300 balance for 15 months. With a 5% fee, the same trade loses about $110.
That thin margin also has to survive three risks, and any one of them can wipe it out:
- The card still bills a minimum payment every month, and a payment 60 days late lets the issuer end the 0% rate on the whole balance.
- Borrowing $10,000 against the card raises how much of your credit limit you’re using, and amounts owed make up 30% of a FICO score. That’s bad timing before you apply for a mortgage or car loan.
- Anything you haven’t repaid when the promotion ends starts accruing interest at the card’s regular rate, often over 20%. At 22%, a $2,000 leftover costs about $37 a month and erases the after-tax gain in under three months.
Point your next 0% offer at card balances charging 20%-plus instead. Stopping that interest beats anything a savings account can pay, and this balance transfer payoff plan shows how to clear the debt before the promotion ends.
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