Balance transfer calculator

Thinking about moving your credit-card balances to a 0% intro APR card? This calculator compares keeping your current cards against one balance transfer — at the same monthly payment — and counts the parts people forget: the transfer fee, the length of the 0% window, and the revert APR on anything left when it ends. So you can see whether a transfer really saves money, and whether you can clear it in time. Everything runs in your browser; we never see or store your numbers.

How the comparison works

A balance transfer is just a way of carrying the same debt at a different rate. It saves money only when the interest you avoid during the 0% intro window is worth more than the transfer fee (typically 3–5% of the balance, added to what you owe). The whole game is timing: if you clear the balance before the window closes, you pay essentially just the fee; if you don't, the leftover balance reverts to the card's regular APR — often as high as the cards you came from.

This tool computes your current blended rate (the balance-weighted average APR across the cards you'd transfer), then runs both paths at the same monthly payment so the comparison is fair: a lower minimum always looks "cheaper" month to month, but stretches the debt. It checks whether you finish inside the 0% window — and if not, it applies the revert APR to whatever is left, so the result reflects what a transfer would really cost.

When a transfer helps — and when it doesn't

A balance transfer tends to help when you have good-to-excellent credit, a balance you can realistically pay off (or nearly off) before the intro period ends, and a fee smaller than the interest you'd otherwise pay — and when you stop charging on the cleared cards. It tends not to help when the balance is too large to clear in the window (so most of it reverts to a high APR), when the fee is large relative to a short window, or when your current rate is already low.

If the tool shows a transfer saving little or nothing, don't force it. A fixed-rate consolidation loan can be more predictable because it has no revert cliff, a nonprofit debt management plan can often reduce interest without a new account, and for unsecured balances you truly can't repay, debt settlement may be an option — though it is not guaranteed, can lower your credit score, and a forgiven balance over $600 may be reported on a 1099-C as taxable income. We explain each route plainly before you choose.

Frequently asked questions

Does a balance transfer reduce what I owe?

No. A balance transfer moves your existing balances to a new card — usually at 0% for an intro window — but you still owe the full principal, plus a transfer fee (commonly 3–5%) added to the balance. It saves money only when you pay enough of it down during the 0% window that the avoided interest beats the fee. If a big balance is left when the intro period ends, it starts accruing at the card's regular APR, which is why this calculator checks whether you can actually clear it in time.

When is a balance transfer worth it?

When you have good-to-excellent credit (needed to qualify), the balance is small enough that you can realistically pay most or all of it off before the 0% window closes, and the transfer fee is lower than the interest you'd otherwise pay. It works best as a payoff accelerator, not a way to lower a payment you can't afford — and only if you stop charging on the cards you clear.

What if I can't pay it off before the 0% period ends?

Then much of the benefit disappears: the leftover balance reverts to the card's regular APR (often as high as the cards you transferred from), and you've still paid the transfer fee on top. If you can't clear it in the window, a fixed-rate consolidation loan can be more predictable because it has no revert cliff. For unsecured balances you genuinely can't repay on any schedule, a nonprofit debt management plan or debt settlement may be worth comparing — settlement is not guaranteed, can hurt your credit, and a forgiven balance over $600 can be taxable.

Will applying for a balance transfer card hurt my credit?

Applying triggers a hard inquiry, which can dip your score a few points temporarily. Opening a new card also lowers your average account age but can lower your overall credit utilization, which often helps. The bigger risk is behavioral: if you treat the freed-up limit on the old cards as new spending room, you can end up deeper in debt than when you started.