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Balance Transfer Break-Even Calculator

A balance-transfer fee is real money paid today for interest you would have paid anyway. This engine runs the actual month-by-month math against your current card and shows the exact month the fee pays for itself.

Quick answer: Compare fixed-payment card paths using the entered transfer fee, promo term, and separate post-promo APR. Enter Credit card balance, Current card APR, Monthly payment you can commit, and Balance-transfer fee to personalize the estimate. It returns Recommended, Total cash saved, and Break-even point so you can compare the impact before choosing a next step. Use it to compare payment, APR, total cost, credit impact, and lender or card tradeoffs.

SWReviewed by SwitchWize Research Desk · Last reviewed July 16, 2026

Your numbers

Current option
Alternatives
Promo structure

Check the offer's fine print. "0% APR" and "no interest if paid in full" are not the same promise.

Bottom line

Transferring the balance is the cheaper path here. The transfer fee breaks even in month 3, saving $719 versus staying put.

Breaks even

Month 3

$719

saved by transferring

Break-even timeline

Before the break-even month, you're still recouping the transfer fee. After it, every month is money kept.

BehindAhead
Month 1Month 11
Interest paid if you stay Transfer fee ($388) Fee not yet recouped Net savings banked
RecommendedGood

Transfer the balance

Lower total cost between the two paths, given your inputs.

Total cash savedGood

$719

Interest avoided by transferring, net of the upfront fee and any trailing interest.

Break-even pointGood

Month 3

fee: $388

The month your current card's accumulated interest would have exceeded the transfer fee.

Cost of staying put

$1,107

11 mo to pay off

Total interest at your current APR until the balance hits zero.

Cost of transferring

$388

fee only

Upfront fee plus any interest owed after the 0% promo ends.

Ranked options

  1. 1

    Transfer the balance

    $388 fee upfront, paid off inside the 0% promo. Total cost $388.

    Confidence: MediumEffort: MediumRisk: Medium
  2. 2

    Keep your current card

    $1,107 in interest over 11 mo at 22.49% APR.

    Confidence: MediumEffort: LowRisk: Low

Watch-out

  • • Estimates assume no new charges, no late payments, and the same monthly payment in both paths. Verify transfer eligibility, credit limit, promo length, fee, go-to APR, and how payments are allocated before transferring.

Assumptions used

Balance: $9,700
Current card APR: 22.49%
Balance-transfer fee: 4.00% ($388)
0% promo period: 12 months
Post-promo / deferred APR: 29.99%
Monthly payment: $1,000
Promo structure: True 0% intro APR

Estimates based on your assumptions above — roughly indicative, not financial, tax, or legal advice.

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Why this matters

The upfront fee on a balance transfer feels like a cost. The interest on your current card feels like nothing, because it is billed quietly in the background instead of charged all at once. That gap in how the two costs are experienced, not the math, is why people hesitate on transfers that are clearly a good deal. This tool puts both costs on the same footing: a break-even month and a total dollar comparison.

Frequently asked questions

How is the break-even month calculated?
The calculator amortizes your current balance at its real APR, month by month, and tracks cumulative interest paid. The break-even month is the first month that cumulative interest equals or exceeds the balance-transfer fee. Every month after that is interest you avoid paying, net of the fee.
What is the difference between "true 0% APR" and "deferred interest"?
A true 0% intro APR charges interest only on whatever balance is left after the promo ends. A deferred-interest offer, common on retail and store cards, retroactively charges interest on the entire original balance back to day one if even one dollar is left unpaid when the promo expires. The Consumer Financial Protection Bureau has documented this structure as a common source of surprise charges. Read the offer terms carefully; "no interest if paid in full" is a deferred-interest signal, not a true 0% APR.
What if my payment cannot cover the interest on my current card?
The calculator flags this directly: if your monthly payment does not exceed your current card's monthly interest charge, the balance will not shrink at all, and a transfer becomes far more attractive since it stops that leak immediately.
What happens if I do not pay off the transferred balance before the promo ends?
Whatever is left starts accruing interest at your card's regular go-to APR (or, on a deferred-interest offer, retroactively at the full original balance). The calculator models both outcomes and includes the trailing interest in the total cost of transferring.

This tool produces estimates based on the assumptions you enter. It is not financial, tax, or legal advice. Actual rates, fees, and outcomes depend on your lender, account terms, and approval.