# Balance Transfer Savings Calculator

> Balance transfer calculator: compare interest saved moving credit card debt to a 0% APR card, transfer fees included. Free, editable rates, no signup.

- **Canonical URL:** https://boringtoolskit.com/balance-transfer-savings-calculator/
- **Category:** Finance & Investing
- **Evidence level:** authored-methodology
- **Reviewed:** July 26, 2026
- **Last verified:** 2026-10-12
- **Privacy:** Inputs and results stay in this browser unless the page clearly labels an external request.

## How it works

Savings = current-card interest during the promo window - (transfer fee + transfer interest); both sides amortize at their own APRs.

## Worked example

An $8,000 balance moved from 24% APR to an 18-month 0% promo with a 3% fee: $240 fee, $1,719.81 of avoided interest, about $1,479.81 net savings.

## Common questions

### What does the balance transfer calculator do?

The balance transfer calculator estimates how much interest you can save by transferring a credit card balance to a card with a lower or 0% introductory APR. You enter your current balance, current APR, new card APR, and promotional period length, and the tool instantly shows your potential savings and payoff timeline.

### Is my data safe and private when using the balance transfer calculator?

Yes. This is a fully no-signup, browser-based tool. All calculations are performed locally on your device using JavaScript, and no personal data, balance amounts, or inputs are ever collected, stored, or transmitted to any server.

### How accurate are the results from the balance transfer calculator?

The balance transfer calculator provides a solid estimate based on the inputs you provide, such as balance, APR rates, and promotional period. Actual savings may vary due to factors like balance transfer fees, changes in interest rates, late payments, or new purchases, so treat the results as a helpful planning guide rather than a guarantee.

## Sources

- [Calculation methodology](/methodology/)
- [Quality evidence and verification standard](/quality-evidence/)

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*Local planning estimate. Verify current terms, rates, and policies before acting.*