Balance Transfer Calculator

A 0% balance transfer is one of the few legitimate free lunches in consumer finance — but it's a lunch with a cover charge (the transfer fee) and a curfew (the promo expiration). This calculator prices all three moving parts against simply staying on your current card, so the verdict is a dollar figure, not a hunch.

How a Balance Transfer Actually Works

A new card pays off your old card's balance; you now owe the new issuer, typically at 0% APR for 12–21 months. Two costs come with it:

• The transfer fee: 3–5% of the amount moved, added to your new balance on day one. On $6,000 at 3%, that's $180 you owe before saving a cent.
• The post-promo APR: once the promo expires, remaining balance accrues at a normal (often 25%+) rate. The promo is a window, not a forgiveness.

When Transfers Win — and When They Don't

The pattern: transfers save the most when the balance is large, the current APR is high, and — critically — you can pay enough to clear most of the balance inside the promo. The tool shows the exact monthly payment that gets you to zero before the promo ends.

The Traps That Eat the Savings

• New purchases on the transfer card often accrue interest immediately at the full rate (payments usually apply to the promo balance first, by law the highest-APR balance — read the offer). Keep the card for the transferred balance only.
• Missing a payment can void the promo APR entirely under many agreements — automate at least the minimum.
• The fee is charged upfront, so serial transferring without paying principal down just stacks fees.
• Closing the old card can raise your credit utilization; leaving it open (and unused) is usually better for your score — see the Credit Score Estimator.

How to Use the Balance Transfer Calculator

1. Enter your current balance, APR and the monthly payment you can genuinely sustain.
2. Enter the offer's promo APR, promo length, transfer fee and the APR after the promo.
3. Read the verdict: net savings, both paths' costs, and the payment needed to finish inside the promo window.
4. If savings are thin, test a different offer — a $0-fee/shorter-promo card sometimes beats a 5%-fee/21-month one.

Frequently Asked Questions

Do balance transfers hurt my credit score?

Slightly and briefly: a hard inquiry plus a new account trims a few points. Utilization often improves (more total limit, same debt), which can offset it within months. Serial applications are what hurt.

What's a typical balance transfer fee?

3% is standard; 4–5% appears on longer promos. No-fee offers exist, usually with shorter 0% windows — this calculator compares them directly.

Can I transfer between cards from the same bank?

Almost never — issuers exclude their own cards. Transfers must generally go to a different bank's card.

Is the transfer fee negotiable?

Rarely on the fee itself, but offers vary widely between issuers and even between mailings — shopping the offer is the negotiation.

What happens if I can't pay it off before the promo ends?

The remaining balance simply accrues at the post-promo APR from then on (deferred-interest retail cards are the exception — avoid those). The calculator models this, and shows the payment that avoids it.

Does the promo APR apply to new purchases?

Often not — many offers give 0% only on the transferred amount. Best practice: don't spend on the transfer card at all until it's cleared.

Is my information private?

Yes — everything computes locally in your browser; no balance or card detail leaves your device.

Run the numbers before the marketing runs you: a transfer is a tool for people committed to killing the balance, not a way to make debt comfortable. Pair it with the Debt Payoff Calculator to fold the new card into your full payoff plan.