Updated September 18, 2026
See what the 2027 COLA could mean for your check.
Estimate your monthly increase, annual gain, and take-home amount after Medicare Part B. Your entries stay in your browser.
01
Enter your numbers
Use the gross amount before deductions.
Estimated monthly take-home
Projected
$1,956.09
after the Part B premium you entered
Calculation
$2,085.98 × 1.035 − $202.90
2027 payment calendar
Find the date your check should arrive.
Choose the situation that applies to you. For most people who started benefits after April 1997, the payment date is based on the worker's day of birth.
Your 2027 schedule
Third Wednesday schedule
COLA in 30 seconds
Why your benefit changes each year.
It protects buying power
COLA raises Social Security and SSI benefits when measured prices rise, helping benefits keep pace with inflation.
Three months set the rate
SSA compares the average CPI-W for July, August, and September with the prior comparison period.
Your net change matters
The COLA raises your gross benefit. Medicare premiums and other deductions affect what reaches your account.
The three-month formula
Follow the data that sets the COLA.
SSA compares the average CPI-W for July, August, and September with the same quarter from the last year a COLA was determined. The final percentage is announced after all three months are available.
Read the official SSA explanation
Q3 CPI-W progress
2 of 3 months available
67%
- JulyPublished
- AugustPublished
- SeptemberPending
Primary sources