Editorial & Accuracy Policy

Stivenza publishes tax and pay information that people rely on for real financial decisions. Here's exactly how we keep it accurate, current, and trustworthy.

Maintained by Colson, Founder, ColsonSuperApps LLC · Last updated June 1, 2026

Authoritative sources only

Every tax figure is taken from primary, current-year sources — the IRS (federal brackets, standard deduction, FICA), the Social Security Administration (wage base), and each US state's Department of Revenue. International figures come from GOV.UK, the ATO (Australia), and the CRA/Revenu Québec (Canada). We never invent or estimate a tax number from memory. Full citations are on the methodology page.

Tested before it ships

Our calculation engine is a separate, dependency-free library with an automated test suite: every state plus federal/FICA is checked against pinned reference values from authoritative sources, and a failing test blocks the release. We verify the math is right before anyone sees a page.

What we deliberately don't model

To avoid false precision, some items are intentionally excluded and disclosed on-page: local and city income taxes, income-dependent deduction phase-outs, tax credits, and itemized deductions. Figures are withholding-style estimates for a typical filer.

Kept current

Tax data is versioned by year (2026 is current) and refreshed when authorities publish new figures.
Automated monitors watch key IRS/SSA source pages and alert us to changes.
Every page shows a visible "last updated" date.

Corrections

If you spot an error, email colsonsuperapps@gmail.com. We investigate every report and correct confirmed errors promptly — accuracy is more important to us than being fast.

Use of AI

We may use AI tools to assist drafting and engineering, but all tax figures and calculations come from the sourced, human-verified data above — never generated by a language model. Content is reviewed by a person before publishing.

Independence & disclosure

Stivenza is supported by ads and affiliate partnerships. Affiliate links are clearly disclosed and never influence our calculations or which figures we show. The free tools always work fully, ad or no ad.

Not professional advice

Everything here is educational and an estimate — not tax, legal, or financial advice. For decisions specific to your situation, consult a qualified professional.