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Interest Saved
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⚠️ Disclaimer: This calculator provides estimates for educational purposes. Actual savings depend on your payment behavior, any new purchases, and the specific terms of the balance transfer offer. Always read the cardholder agreement.
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Sources & Methodology
Balance transfer formula verified against Bankrate and NerdWallet balance transfer calculator methodology.
Bankrate — Balance Transfer Calculator
bankrate.com — Interest savings calculation methodology and balance transfer fee guidance.
Consumer Financial Protection Bureau — Balance Transfers
consumerfinance.gov — CFPB explanation of balance transfer terms, fees, and promotional APR periods.
Interest without transfer (current card): Standard amortization at current APR over promo period months.
Transfer fee: Balance × Fee percentage.
Interest saved: Current card interest over promo period − transfer fee.
Monthly payment needed: (Balance + Transfer Fee) ÷ Promo Months.
Transfer fee: Balance × Fee percentage.
Interest saved: Current card interest over promo period − transfer fee.
Monthly payment needed: (Balance + Transfer Fee) ÷ Promo Months.
Last reviewed: April 2026
How Does a Balance Transfer Save Money?
A balance transfer moves high-interest credit card debt to a new card with a 0% introductory APR. During the promo period you pay zero interest — every dollar of your payment reduces principal. On a $6,000 balance at 22.99% APR, you pay approximately $112/month in interest alone. With a 0% transfer, that $112/month all goes to debt reduction instead.
Balance Transfer Formula
Net Savings = Interest on Current Card − Transfer Fee
Example: $6,000 balance at 22.99% APR, 18-month 0% offer, 3% transfer fee.
Interest on current card over 18 months (paying minimums): ~$1,847
Transfer fee: $6,000 × 3% = $180
Net savings: $1,847 − $180 = $1,667 saved
Monthly payment to pay off during promo: ($6,000 + $180) ÷ 18 = $343/month
Interest on current card over 18 months (paying minimums): ~$1,847
Transfer fee: $6,000 × 3% = $180
Net savings: $1,847 − $180 = $1,667 saved
Monthly payment to pay off during promo: ($6,000 + $180) ÷ 18 = $343/month
Balance Transfer Break-Even Analysis
| Balance | APR | Promo Period | 3% Fee | Net Savings |
|---|---|---|---|---|
| $3,000 | 20% | 12 months | $90 | $410 |
| $6,000 | 23% | 18 months | $180 | $1,667 |
| $10,000 | 25% | 21 months | $300 | $3,527 |
| $15,000 | 24% | 18 months | $450 | $4,106 |
When Is a Balance Transfer Worth It?
A balance transfer makes sense when the interest you save exceeds the transfer fee AND you can pay off the balance before the promo period ends. If you only make minimum payments, you risk carrying a balance into the post-promo APR (often 18-30%), which erases the savings. Commit to a fixed monthly payment that pays the balance in full before the promo expires.
What Credit Score Do You Need?
Most 0% balance transfer cards require a credit score of 700 or higher. The best offers with 18-21 month promo periods typically require 720+. If your score is below 700, look for cards with shorter promo periods (12 months) or lower transfer fees as they have more flexible approval criteria.
💡 Pro Tip: The moment you transfer, set up autopay for the monthly amount needed to pay off the full balance by the last month of the promo period. Use our calculator result for the exact monthly payment. Mark the promo end date in your calendar as a hard deadline.
Frequently Asked Questions
A balance transfer moves existing credit card debt to a new card, typically one with a 0% introductory APR. You pay a one-time transfer fee (usually 3-5% of the balance) but pay no interest during the promo period.
Savings = Interest on current card over promo period minus transfer fee. For a $6,000 balance at 22.99% over 18 months, you pay about $1,847 in interest. With a 3% transfer fee of $180, net savings is approximately $1,667.
Most balance transfer cards charge 3% to 5% of the transferred amount. Some cards offer 0% transfer fees during limited windows. A 3% fee on $5,000 is $150 — typically worth it if your current APR is above 15%.
Most 0% balance transfer offers range from 12 to 21 months. The longest offers (21 months) are available on select cards for applicants with excellent credit (720+). Typical offers are 15 to 18 months.
Any remaining balance begins accruing interest at the card's standard APR, which is typically 18% to 30%. If you only make minimum payments, you could end up with significant debt at the full rate. Always have a payoff plan.
Yes, in two ways. Applying for a new card causes a hard inquiry (minus 5-10 points temporarily). However, the new card increases your available credit, which can lower your credit utilization ratio and improve your score over time.
Not usually. The 0% APR typically applies only to transferred balances, not new purchases. New purchases may accrue interest at the standard rate. Read the cardholder agreement carefully before using the card for anything other than the balance transfer.
Most competitive 0% balance transfer cards require a credit score of 700 or higher. The best offers (18-21 months) typically require 720+. Cards with 12-month promos may approve scores as low as 670.
It depends on your balance and repayment timeline. Balance transfers (0% APR) beat personal loan rates if you can pay off within the promo period. For large balances that need more than 21 months, a personal loan at 10-15% APR may total less than a balance transfer at 25%+ after the promo ends.
Yes, you can transfer balances from multiple cards to a single balance transfer card, up to the card's credit limit. Transfer all balances at once to maximize your promo period. Most cards allow transfers from multiple issuers in a single application.
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