Editorial Standards

A useful explanation should let you understand and challenge the result.

Sourcing and assumptions

For external rates and rules, prefer the responsible provider’s documentation and record the relevant source date. Distinguish those facts from user-entered assumptions and hypothetical examples. A platform-wide example is not an account-specific quote.

Original explanations

Tools and examples are written around a decision, with relevant trade-offs and exclusions. We do not copy competitor explanations, invent testimonials, or present automatic text as expert review.

Review dates

Review dates describe the work actually performed. A navigation update does not reverify a fee schedule. Existing source dates remain visible until the underlying facts are checked again. New decision-tool examples are reproducible with the Load example control.

Corrections

Use the contact page to send a page URL, non-sensitive sample inputs, expected result and a source when applicable. We aim to reproduce the issue before changing a formula or explanation. No named reviewers or unverified credentials are implied.

Commercial independence

Affiliate links are disclosed and secondary to the calculation. A commission does not change a calculator’s formula or output. Read the affiliate disclosure.

Last reviewed: 19 October 2026 · Contact or corrections