Social Security COLA 2027 Estimate Calculator
The 2027 Social Security COLA is determined by CPI-W third-quarter 2026 versus Q3 2025. Recent COLAs: 2026 = 2.5%, 2025 = 2.5%, 2024 = 3.2%, 2023 = 8.7%. SSA announces the final 2027 COLA in mid-October 2026; benefits adjust January 2027.
How the 2027 COLA Is Computed
SSA averages CPI-W index for July, August, September 2026, compares against same period 2025. Difference ÷ 2025 average = COLA, rounded to nearest 0.1%. If negative or zero, no COLA applied (benefits never reduced).
Recent COLAs
2026: 2.5% (announced Oct 2025). 2025: 2.5%. 2024: 3.2%. 2023: 8.7% (highest since 1981). 2022: 5.9%. 2021: 1.3%. 10-year average: 3.0%.
Part B Premium Offset
Medicare Part B premium typically rises 5-12% annually. If COLA $50/month and Part B rises $15/month, your net raise is $35/month. Hold-harmless rule protects most beneficiaries from net decrease.
Source and Disclaimer
Sourced from ssa.gov COLA history. 2027 estimate uses TIPS-implied CPI projection. Final figure announced ssa.gov second Thursday October 2026.
Source: ssa.gov/cola. Last updated: May 2026.