September 29, 2026 — Netpaysum launches
- What changed: First release with calculators for the United States (federal and 12 states), the United Kingdom, Australia and Canada, plus hours and pay conversion tools.
- Pages affected: all calculators
- Source: IRS Publication 15-T (2026) and Publication 15 (2026); state revenue departments (2026); HMRC rates and thresholds 2026 to 2027; ATO tax tables 2026–27; CRA T4127 (2026); Revenu Québec TP-1015.F-V (2026).
- Type: New calculator
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