Credit Card Balance Transfer Calculator
Test whether a promotional balance transfer can reduce interest before the balance is paid off.
Verify this calculatorMaintained
See what the result uses—and what it cannot know.
Sumvoro calculates deterministically from the visible inputs. It does not invent lender terms, local rules, market values, medical facts, or professional judgments.
- 1 · InputsCheck every entered value against the latest statement, quote, measurement, or official source.
- 2 · Formula
Transfer cost includes the transfer fee, promotional interest, and post-promotion interest until payoff. - 3 · SensitivityUse Insights to run a lower and higher case. If the conclusion changes easily, collect better information or leave more margin.
- 4 · ScopeThis tool is maintained and covered by automated calculation tests. Provider timing, rounding, and omitted facts can still change a real-world result.
- Formula release
- 2026.10-r4
- Release date
- October 10, 2026
- Review status
- Maintained
- Source review
- September 12, 2026
Optional readingLearn how this calculator works
How the credit card balance transfer calculator works
Compare keeping a credit-card balance with moving it to a promotional transfer offer.
Transfer cost includes the transfer fee, promotional interest, and post-promotion interest until payoff.
Read our calculation methodology and limitations.
Example
Compare the current card APR with a transfer fee, promotional period, and post-promotion APR.
What affects the result
- Promotional rates can end after late payments.
- New purchases may follow different interest rules.
- A payment too small to amortize can leave a balance.
Frequently asked questions
What should I enter?
Use current statement or offer values where available. Each input includes a description of the expected amount, rate, or time period.
Is this financial advice?
No. It is a deterministic planning estimate. Verify important decisions with official documents and an appropriately qualified professional.