Balance Transfer Calculator

A balance transfer moves high-APR credit card debt to a new card with a 0% promotional rate, typically for 12–21 months. The fee is usually 3–5% of the transferred balance. This calculator shows whether the interest savings outweigh the fee — and by exactly how much — based on your specific balance, rate, and monthly payment.

Transfer saves you $1,124.13 after the fee

⚠ Balance not fully paid off before promo ends — go-to rate (25.99% est.) applies to remainder

Without Transfer

Total Interest$1,342.97
Total Paid$7,342.97
Months to Pay Off21
Paid OffMarch 2028

With Transfer

Transfer Fee$180.00
Interest (After Promo)$38.84
Total Interest$38.84
Months to Pay Off18
Paid OffDecember 2027

Savings Breakdown

Gross Interest Savings$1,304.13
Transfer Fee− $180.00
Net Savings$1,124.13

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How a Balance Transfer Works

  1. Apply for a new card with a 0% intro APR offer.
  2. Transfer your existing balance (the new card pays off the old one).
  3. Pay a one-time transfer fee (typically 3% of the balance).
  4. Pay down the balance during the 0% promo period.
  5. Any remaining balance begins accruing interest at the go-to rate when the promo ends.

Is a Balance Transfer Worth It?

A balance transfer is worth it when the interest savings during the promo period exceed the transfer fee. For a $6,000 balance at 22.99% APR with a 3% fee ($180): you pay $1,380 in annual interest at the current rate. A 15-month 0% transfer saves approximately $1,100 in interest during that period. Net savings: $1,100 − $180 = $920.

When Balance Transfers Make Sense

  • Large balance on a high-APR card.
  • You can pay down a significant portion during the promo period.
  • Transfer fee is 3% or less.
  • You have a plan to pay it off before the promo ends.

When to Skip a Balance Transfer

  • Small balance that you can pay off in 3–4 months at current APR (fee may exceed savings).
  • You will not change spending behavior (running up the old card negates savings).
  • The go-to rate on the new card is higher than your current rate.
  • You are close to paying off the balance anyway.

Real-World Example

Emily has $6,000 at 22.99% APR and pays $350/month. Without transfer: pays off in 20 months, $1,840 in interest.

With 0% balance transfer at 3% fee ($180), 15-month promo: $0 in promo interest, balance after promo = $6,180 − (15 × $350) = $930. Then $930 at the estimated go-to rate for ~3 more months: about $40 interest. Total cost with transfer: $180 fee + $40 = $220.

Net savings: $1,840 − $220 = $1,620.

Frequently Asked Questions

How is a balance transfer fee calculated?

The fee is a percentage of the amount transferred, typically 3–5%. On a $6,000 transfer with a 3% fee, you pay $180. This fee is usually added to your new card balance. Some cards offer 0% transfer fees for limited-time promotions — check your offer terms.

What happens if I don't pay off the balance before the promo ends?

Any remaining balance begins accruing interest at the go-to rate, which is typically 18–29% APR. The interest is calculated only on the remaining balance from that point forward — not retroactively on the full original balance (unless the card has 'deferred interest,' which some store cards do).

Does a balance transfer hurt my credit score?

Applying for a new card causes a small temporary drop (typically 5–10 points) from the hard inquiry. But if the transfer lowers your credit utilization on the old card and you make on-time payments, your score usually recovers within 3–6 months.

Can I transfer balances from multiple cards?

Yes, up to the new card's credit limit. Many people transfer balances from two or three high-APR cards to a single 0% promo card. Run each transfer through this calculator to check net savings and ensure total fees are justified.

What credit score do I need to qualify for a 0% balance transfer card?

Most 0% balance transfer cards require a good to excellent credit score — typically 670+ FICO for basic offers and 720+ for the best 21-month 0% offers. Check pre-qualification offers that use soft pulls to assess eligibility without affecting your score.

Is a 5% transfer fee ever worth it?

Sometimes. On a $10,000 balance at 26% APR, a 5% fee ($500) on an 18-month 0% card saves approximately $3,000 in interest during the promo period, yielding $2,500 in net savings. Run the numbers with your specific balance and payment amount.

Should I close my old card after the transfer?

Generally no. Closing the old card reduces your total available credit, which can increase your overall credit utilization ratio and hurt your score. Keep it open but stop using it. If it has an annual fee, contact the issuer to downgrade to a no-fee version.

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