Data Sources
Our calculators and trackers are grounded in primary publications from U.S. government agencies.
July 2026 Consumer Price Index
Official July 2026 CPI-W: 327.104.
Published 2026-08-12 · Last checked August 30, 2026Supports: cpi-w-2026-july, cola-2027-flat-estimateLatest Cost-of-Living Adjustment
Official CPI-W formula, 2025 Q3 base average of 317.265, and 2.8% COLA effective for December 2025.
Published 2025-10-24 · Last checked August 30, 2026Supports: cola-base-average-2025-q3, cola-2026-official, cola-2027-flat-estimate2026 Medicare Parts A & B Premiums
Official 2026 standard Part B premium: $202.90.
Published 2025-11-14 · Last checked August 30, 2026Supports: medicare-part-b-20262026 Medicare Trustees Report
Intermediate estimate for the 2027 standard Part B premium: $209.50.
Published 2026-06-09 · Last checked August 30, 2026Supports: medicare-part-b-2027-estimate, medicare-hold-harmlessHow the Hold-Harmless Provision Protects Your Benefits
SSA explanation of eligibility conditions and common exceptions for Part B hold-harmless protection.
Published 2020-11-30 · Last checked August 30, 2026Supports: medicare-hold-harmlessPOMS HI 01001.004: Variable Part B Premium
SSA operating policy for hold-harmless eligibility and the variable Part B premium calculation.
Published 2023-02-02 · Last checked August 30, 2026Supports: medicare-hold-harmlessSchedule of Social Security Payments
Official 2026 and 2027 Social Security and SSI payment calendars.
Publication date not stated · Last checked August 30, 2026Supports: payment-calendar-2026-20272026 Consumer Price Index Release Schedule
September 2026 CPI is scheduled for release October 14, 2026 at 8:30 a.m. Eastern.
Published 2026-02-18 · Last checked August 30, 2026Supports: cola-2027-final-cpi-releaseSource hierarchy
We prioritize agency releases, official tables, statutory formulas, Federal Register notices, and official payment calendars. Secondary reports may help identify a question, but they do not replace the primary source for a published number.
Freshness
The visible “last updated” date tells you when the site's core dataset was last reviewed. Individual sources separately show their publication date, when stated by the agency, and the date we checked them. A future or conditional value is always labeled estimate or scenario.