For 2017, the COLA will be 0.3 percent. Instead of seeing their Social Security benefits rise by this amount, most people who are held harmless will instead see that increase applied to higher Part B premiums.
The average amount of that increase will raise Part B premiums by an average of about 4 percent, from $104.90 to about $109.00 a month. Exact increases will be tied to a person’s actual Social Security benefits, so Part B premiums will be larger than $109 for high-income beneficiaries and lower for those with below-average benefits.
For people who had to pay $121.80 a month this year but are now held harmless for 2017, their premiums will also rise by an average of about 4 percent. Again, specific changes will be tied to their actual Social Security payments.
For people who are not held harmless in 2017, the standard monthly Part B premium will rise from $121.80 to $134.00.
Reference:
Get What's Yours