Credit Utilization Calculator: How It Works
Balance ÷ limit, per card and combined: the calculator that shows what scoring models actually see.
The comparison that decides a transfer: fee on day one versus interest avoided over the promo period — and the break-even point between them.
A balance transfer savings calculator performs the decision math a marketing page will not: it compares the certain cost — a 3%–5% transfer fee paid immediately — against the uncertain benefit — interest avoided if the balance clears inside the promotional window.
The calculation hinges on discipline, not the offer. A 0% period saves only the interest that would have accrued during months you actually use; a balance that outlives the promotion reverts to standard APR and may erase the entire benefit.
Assumes no new purchases, a fixed monthly payment, and 0% APR during the intro window.
Compare interest paid on your current card versus a hypothetical 0% intro transfer.
Inputs: current balance, current APR, the transfer fee percentage, the promo length in months, and your planned monthly payment. The tool computes interest that would accrue staying put versus the fee plus any residual balance interest on the new card — the difference is net savings.
The break-even check matters most: divide the transfer fee by the monthly interest you currently pay. If the fee equals two months of interest and the promo runs 18 months, the transfer wins decisively. If the balance is small or nearly repaid, the fee may exceed any possible savings.
CFPB's Regulation Z enforcement requires promotional disclosures to state the fee, duration, and go-to APR — the exact inputs this calculator consumes. FTC guidance adds that consumers should compare the total cost of a transfer against their current trajectory, precisely what the break-even calculation formalizes.
Funditia's calculator is an educational model; actual offers, fees, and approval amounts are issuer decisions and vary by applicant.
Educational references: Consumer Financial Protection Bureau (consumerfinance.gov) and Federal Trade Commission (consumer.ftc.gov). Funditia is an independent educational publication and is not a credit card issuer, lender, or credit repair organization.
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