Does the 0% transfer actually save money?

Balance transfer credit cards offer 0% APR for 12-24 months on transferred balances in exchange for a 2-4% upfront fee. The math depends on how quickly you pay down the balance during the promo period. This calculator shows whether a specific transfer actually saves money.

For a 5,000 balance at 22% APR transferring to 0% for 21 months with 3% fee and 250 monthly payments: transfer fee is 150. Staying puts 1,925 in interest over 21 months; transferring puts 150 (fee only) - saving 1,775. Paying aggressively during the promo is key - otherwise the balance hits regular APR after month 21 and the savings erode.

The tool requires monthly payment capable of clearing most or all of the balance during promo period. If payment is too low to make meaningful progress, the transfer just delays the problem. Rule of thumb: aim to clear 60-80% of the balance during the 0% period.

Quick example

With current balance of 5,000 and current apr of 22% (plus transfer promo rate of 0% and transfer fee of 3%), the result is 1,775.00. Change any figure and watch the output shift — it's often more useful to see the pattern than to memorise the formula.

Which inputs matter most

You enter Current Balance, Current APR, Transfer Promo Rate, Transfer Fee, and Promo Period. Not every input has equal weight. Flip one at a time toward extreme values to feel which ones move the needle most for your situation.

What's happening under the hood

Transfer fee = balance × fee %. Staying cost = balance × current rate × months/12. Transfer cost = (balance + fee) × transfer rate × months/12 + fee. Savings = staying - transfer. The formula is listed in full below. If the number looks off, you can retrace the calculation by hand — that's the point of showing the working.

Using this to stay on track

The most common failure mode isn't the plan itself — it's letting the balance creep back up while you're paying it down. Set a rule: no new debt added to the same account until the balance is zero. The calculator is only useful if the number it shows doesn't keep resetting.

What this doesn't capture

Real payoff journeys include missed payments, fee changes, balance transfers, and promotional rates that reset. The calculation assumes a steady plan; reality is rarely that clean. Use the figure as the best-case plan against which actual progress gets measured.