[wdfifteen]

^^
FYI, this does not include the Part D MAGI premium. I don't know anyone who doesn't have Part D.


Medicare has a screwy way of determining what your premium is and collecting payments.

They look at your tax return from two years before to determine what your premium is, then apply it to the previous year. ie:
To determine the premium for 2018 they look at tax returns for 2016. During the year 2018 they charge whatever they charged in 2017. At the end of the 2018 they look at tax returns for 2016 and decide what you SHOULD have paid, if it's more than you paid, they bill you the difference in one lump sum. If it's less than you paid, they lower your premium for the following year (2019 in this example).

My income is variable, some years I pay the minimum and then get hit with a big bill in January, other years I pay less than the minimum (because I overpaid the previous year).

You can appeal their decision if your income drastically changed, but you have to stay on top of it.