Tax Update Changelog

We update our calculation engine whenever federal or state tax rules change. Here's the history so you always know which tax year and rates power your results.

January 2026

v2026.1

Updated federal income tax brackets to official IRS 2026 figures (10%–37%).
Set 2026 standard deduction: $16,100 single, $32,200 married filing jointly, $24,150 head of household.
Updated Social Security wage base to $184,500 for 2026.
Applied 2026 state income tax rate changes (e.g., Ohio flat 2.75%, Georgia 4.99%, North Carolina 3.99%).

October 2025

v2026.0-beta

Incorporated IRS 2026 inflation adjustments released October 2025.
Added Additional Medicare Tax (0.9%) handling above filing-status thresholds.

Current calculation version: 2026.1 · Last updated January 2026.