Editorial Policy

How calculators are built

Every calculator is individually coded — we do not embed third-party widgets. Each one starts from the standard published formula (e.g., the amortized loan payment formula, IRS tax brackets, FICA rates), is implemented as a pure deterministic function, and is verified against worked examples from authoritative sources and against established calculators before launch.

Accuracy standards

All inputs are range-clamped so impossible values (negative balances, 1,000% rates) cannot produce misleading output. Each calculator page documents its formula, a worked example with real numbers, its assumptions, and its limitations — what the model simplifies or leaves out is stated, not hidden.

Update cadence

Figures tied to law or published data — federal tax brackets, standard deductions, FICA wage caps, contribution limits, state tax rates — are reviewed at least annually and after major legislative changes. Each page shows its last-updated date below the title.

Corrections

If you find an error, email us via the contact page with the calculator name, your inputs, and the result you expected. Confirmed calculation errors are prioritized over all other work; we typically publish a fix within one week and note material corrections on the affected page.

Advertising independence

KalkWise is funded by display advertising (Google AdSense). Advertisers have no influence over calculator logic, results, rankings, or editorial content. We do not accept sponsored results, paid placements in calculators, or compensation to recommend products.

What we do not do

We do not provide personalized advice, sell financial products, collect your inputs (all calculations run locally in your browser), or generate pages without original, verified content. Every page is written and reviewed for usefulness to a real person with a real question.