Version logWhat changed, and why.
Material rate, formula, source, and interface changes are recorded here so readers can judge freshness instead of guessing.
Embeds, citation assets, and auditable interactions
- Added four free iframe calculators: federal income, 1099, self-employment, and sales tax.
- Added downloadable bracket, SE-tax flow, quarterly-payment, and official state-agency tables.
- Added local-only input saving, result copy/print actions, event-level analytics, and formula flow diagrams.
- Reviewed IRS 2025/2026 brackets, Publication 505, Topic 554, SSA wage-base material, and state-agency directory links.
Priority topic clusters
- Published 12 distinct guides around federal income, 1099/self-employment, and sales-tax decisions.
- Added worked examples, common-error checks, and stronger primary-source trails to four priority tools.
Public calculator library
- Released the initial 12 calculators with visible formulas, assumptions, and privacy-first browser calculations.