Data change history

When an official rate or threshold changes, the update lands here with its source. Transparency about change is part of being a reference you can trust.

June 2026

• 11 June 2026: US state sales tax dataset extended to all 50 states and DC, each rate verified against its state revenue authority.
• 8 June 2026: US Sales Tax Calculator published with state base rates verified against official state revenue authorities.

Automated checks watch each official source on a schedule; verified changes are applied, logged here, and reflected in each page's last-verified date. See the methodology.