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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.
Sources & Methodology
- Federal Reserve G.19 Consumer Credit, average APR on credit card accounts at all reporting commercial banks
- CFPB, how balance transfers work including typical fee ranges and promotional period terms
- Federal Reserve FRED, historical credit card APR series used to calculate interest savings comparisons
By Sean Baldwin · Last reviewed July 2026
The Verdict
Worth it if: you can realistically pay off the transferred balance within the promo period, the transfer fee (typically 3%) costs less than the interest you'd otherwise pay, and you won't keep charging the old card.
Not worth it if: you can't pay off the balance before the 0% period ends, the transfer fee is 5% or higher, or the math shows negative net savings once the fee is factored in.
Break-even threshold: interest savings need to exceed the transfer fee, on a typical $6,000 balance at 21% APR with a 15-month 0% promo, that's roughly $900+ in savings against an $180 fee.
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.
Related Calculators
How We Calculate Your Score
The Worth It Score starts at 50 and adjusts based on whether you can pay off your balance within the promo period, your total interest savings, the transfer fee, and the promo period length. Paying off in full during the promo period is the single biggest positive signal.
- · Base score: 50
- · Paid off within promo period: adds 30 points
- · Total savings: high savings add up to 15 points; negative savings (transfer costs more than you save) subtract 25 points
- · Transfer fee: 3% or less adds 8 points; 5% or more subtracts 5 points
- · Promo period: 18+ months adds 8 points
Score assumes you stop using the original card after the transfer. Continued spending on the transferred card eliminates the benefit and makes balance transfers counterproductive.
Cite this calculator: Worth It Calculators, "Is a Balance Transfer Card Worth It? See If You Will Actually Save (2026)," worthitcalculators.com/balance-transfer/ (updated July 2026).