Editorial policy

Solveberry reviews formulas, source definitions, examples, effective dates and page copy before publication and when material rules change.

Formula control

Material formula, rate, threshold or unit-definition changes require regression tests and review before release. A displayed result should be reproducible from the formula, rule or standard stated on the page.

Content standard

Every indexed tool must solve a distinct user job and include useful supporting information rather than near-duplicate filler. Solveberry avoids mass-producing separate pages for reverse directions, misspellings, every exact numerical input, or state-name variants that do not materially change the calculation.

Source hierarchy

Primary sources are preferred whenever an authoritative source exists. Measurement tools use standards bodies and official definitions where applicable. U.S.-specific tax, payroll, wage, retirement, travel and federal-calendar tools prioritize the relevant government agency, including the IRS, SSA, DOL, OPM and GSA. State-specific calculations should use the official state agency or statute source when a state rule changes the answer.

Effective dates and tax years

Rules that change by tax year, fiscal year or effective date are versioned explicitly. A 2026 calculator is scoped to 2026 unless the page clearly says otherwise. Mid-year changes are modeled using their effective dates instead of silently applying a later rate to an earlier period.

Verification process

Before release, calculation logic is checked with representative regression cases and deployment QA. Important source values are compared with the cited primary authority. SEO and structured-data changes are also checked so markup describes what is genuinely present on the page and does not invent reviews, ratings, credentials or affiliations.

High-impact financial and legal-adjacent tools

Tax, retirement, payroll and benefits calculators are deliberately narrow in scope. The page should state material exclusions, such as state tax, special filing rules, inherited-account rules or other conditions not modeled. Solveberry does not present these tools as personalized legal, tax, accounting, financial or benefits advice.

Corrections and source changes

If a formula, threshold, definition, example, source or accessibility issue is identified, the affected page can be corrected in a later release. Material corrections should preserve a clear, testable calculation method and update the visible review date. Source changes that alter the answer are treated as product changes rather than hidden copy refreshes.

Review dates

Tool pages display a genuine last-reviewed date when their calculation method or supporting content has been reviewed for a release. Solveberry does not invent expert credentials or fake named reviewers.

U.S. utility policy

The dedicated U.S. Sources & Update Methodology explains the source hierarchy, update triggers, effective-date handling and scope conventions used across the U.S. collection.