Balance Transfer Calculator
Calculate if a 0% balance transfer saves money versus keeping your current card.
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Balance transfers in 2026: when the math works
The average credit card APR sits near 21.5% according to the Federal Reserve G.19 consumer credit data, and many retail and subprime cards charge 27% to 29%. Against that backdrop, a 0% intro APR balance transfer card is one of the few legitimate ways to cut interest cost to almost nothing for 12 to 21 months. The catch is the transfer fee, usually 3% to 5% of the amount moved, charged upfront and added to your new balance.
The break-even logic is simple. A 3% fee on $8,000 costs $240. If your current card charges 24% APR, you pay roughly $160 in interest in the FIRST month alone. The fee usually pays for itself within 6 to 8 weeks. The transfer only backfires when you move a small balance you could pay off within 2 months anyway, or when you fail to clear the balance before the promo ends and the deferred 20%+ APR kicks in on the remainder.
How this calculator does the math
Months to pay off a balance at a fixed monthly payment uses the standard amortization formula:
months = -ln(1 - B*r / P) / ln(1 + r) where B = balance, P = monthly payment, r = APR / 12 (monthly rate)
Worked example: $8,000 at 24% APR vs a 15-month 0% transfer
KEEP CURRENT CARD (24% APR, $400/mo) Payoff time: 26 months Total interest: ~$2,320 TRANSFER (3% fee, 15-mo 0%, then 20% APR) Fee added: $240 (new balance $8,240) Paid in promo: $6,000 (15 x $400) Left at 20%: $2,240 -> ~6 more months Post-promo interest: ~$112 Total cost: $352 vs $2,320 SAVINGS: ~$1,970 and debt-free 5 months sooner
What good offers look like right now
The strongest widely available offers in early 2026 run 18 to 21 months at 0% with a 3% fee (sometimes 5% for the longest promos). A 720+ FICO score gets you most of them; 670 to 719 still qualifies for 12 to 15 month offers. If your score is below 670, compare a credit union debt consolidation loan instead, since federal credit unions cap rates at 18% and the fixed term forces a payoff date.
When a balance transfer is the wrong move
Skip the transfer if you can pay the balance off within about 2 months (the fee exceeds the interest saved), if the promo card has a transfer fee AND a balance transfer APR above 0%, or if you have not fixed the spending that created the balance. Data from multiple issuer studies shows a large share of transferers carry MORE total debt 18 months later because they kept charging on the old card. Close it or freeze it.
Figures based on Federal Reserve G.19 consumer credit data and issuer offer terms as of early 2026. Estimates are educational, not financial advice. Offer terms vary by issuer and credit profile.
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Frequently Asked Questions
How does a 0% balance transfer work?
A balance transfer moves debt from one or more high-interest cards to a new card with a 0% introductory APR for 12-21 months. You typically pay a transfer fee of 3-5% upfront. During the promo period, all payments reduce principal (no interest). At the end of the promo, any remaining balance accrues interest at the card normal APR (usually 19-29%). The strategy only works if you pay off the balance before the promo expires.
What credit score do I need for a balance transfer card?
Most balance transfer cards with 0% promo periods require good to excellent credit: 670+ for approval, 720+ for the best offers (longest promo periods, lowest fees). Check for pre-qualification with soft pulls before applying to avoid hard inquiry score impacts. Cards like Chase Slate Edge, Citi Simplicity, and Wells Fargo Reflect consistently offer competitive balance transfer terms.
What mistakes should I avoid with balance transfers?
Key mistakes: continuing to use the old card and accumulating new debt, missing a payment (often voids the 0% promo immediately), not paying off the full balance before promo ends (remaining balance suddenly accrues high APR), not accounting for the transfer fee in your savings calculation, and applying for multiple cards simultaneously (hurts credit score). Create a payoff plan before transferring.