Changelog

When we updated tax, Medicare, and marketplace figures, and what changed.

October 30, 2026 (verified)

• Confirmed all Medicare IRMAA tiers and Part B/Part D amounts against the CMS 2026 fact sheet; the top tier now starts at exactly $500,000 (single) and $750,000 (joint).

October 30, 2026 (latest)

• Added the Social Security taxable benefits calculator based on IRS Publication 915.

October 30, 2026 (later)

• Added the capital gains tax bracket calculator with 2026 long-term rates from IRS Rev. Proc. 2025-32.

October 30, 2026

• Launched the Medicare IRMAA, Roth conversion, and early-retirement subsidy calculators.
• Loaded 2026 federal tax brackets, 2026 Medicare Part B/Part D premiums and IRMAA tiers, and 2027 marketplace subsidy percentages with 2026 poverty guidelines.
• Added Alaska and Hawaii poverty lines, a Medicare IRMAA check in the Roth calculator, and example inputs.

Sources are listed on How it works. Found a mistake? contact@incomecliff.com.