Is a Balance Transfer Worth It? Calculator
A 0% balance transfer can save you hundreds — or backfire if you don't do the math first. Enter your balance and offer details to find out if the transfer fee is worth it and whether you'll pay it off in time.
Frequently Asked Questions
Is a balance transfer worth it?
A balance transfer is worth it if: your transfer fee (typically 3%) is less than the interest you'll save during the promo period, you can pay off most or all of the balance before the 0% period ends, and you won't run up new debt on the old card.
What happens if I don't pay off the balance before the promo period ends?
After the 0% promo period, the remaining balance starts accruing interest at the card's regular APR, which is typically 18–28%. The key is to know your monthly payment target to pay off the full transferred balance before the promo ends.
How much is a typical balance transfer fee?
Most balance transfer cards charge 3–5% of the transferred amount. On a $5,000 balance, that's $150–$250. Some cards offer 0% transfer fees, but these usually come with shorter promo periods. The fee is worth paying if your interest savings exceed it.
Does a balance transfer affect my credit score?
Yes, in a few ways: you'll take a small hit from the hard inquiry (5–10 points temporarily), but opening the new card increases your total available credit, which can reduce your utilization ratio and help your score over time.
What credit score do I need for a balance transfer card?
Most 0% balance transfer offers require good to excellent credit — typically a 680+ score. The best offers (longest 0% periods, lowest fees) usually require 720+. If your score is below 670, you may not qualify for the best promotional rates.
The real math on balance transfer savings
The transfer fee is not the cost of a balance transfer — it is the price of admission. The real question is whether that fee is less than the interest you would otherwise pay. On $6,000 of credit card debt at 21% APR, you are paying about $105 per month in interest alone. A 3% transfer fee on $6,000 is $180. If you get a 15-month 0% promo period, you avoid approximately $1,100 in interest for a $180 fee — a $920 net gain. The calculator handles this math automatically, but the key input is being honest about your monthly payment. If you cannot pay down the full balance within the promo window, the savings drop fast.
What happens when the promo period ends
The 0% promotional rate is not permanent, and most cards are not forgiving when it expires. Any remaining balance immediately starts accruing interest at the card's standard APR, which on most balance transfer products runs 19–28%. This is where people get caught: they transfer $8,000, pay the minimum for 18 months, reduce the balance to $5,500, and then suddenly owe interest on $5,500 at 24.99% APR. The original math assumed payoff. Now they are in the same situation they started in, with less time to fix it. The safeguard is simple: divide the full transferred balance by the number of promo months and set that as your fixed monthly payment from day one.
How credit score determines what offers you can actually get
Balance transfer cards with 0% promo periods of 18–21 months are reserved for borrowers with good-to-excellent credit — typically 700+. Scores between 670 and 699 can sometimes qualify but often get shorter promo periods (12–15 months) or higher transfer fees. Below 670, most 0% offers are off the table. If your score is in that range, a personal loan at a fixed rate may be more realistic and still saves money compared to keeping high-APR card debt. Before applying for any balance transfer card, check whether a soft-pull pre-qualification is available so you can see likely approval odds without a hard inquiry affecting your score.
When a balance transfer is not the right tool
Balance transfers work best for one thing: a discrete amount of debt you are confident you can eliminate within the promo period. They become the wrong tool when your balance is too large to realistically pay off in 15–21 months, when you have multiple accounts that a single transfer limit will not cover, or when you are not confident you will leave the old cards unused after the transfer. In those cases, a debt consolidation loan with a fixed rate and fixed term gives you more predictability and forces the full payoff on a clear schedule. The choice is not which option sounds better — it is which one you will actually complete.