[UPDATE, 10/24/13: Per "Freelancer" comment below, there are multiple definitions of MAGI in the tax code, and in the initial post I used the wrong one. Erroneous info marked below. If you got here by search and are simply looking for info about how to calculate MAGI in the ACA, go to Freelancer's
post or to this
summary sheet of what income to include/exclude]
[UPDATE 2, 12/23/13: Now that actual plans, prices and subsidies can be viewed, I have a series of posts exploring various income/subsidy scenarios. Last in series
here. ]
Covered California, the state entity enthusiastically
administering the state's health care exchanges, offers not only
posted price estimates for the different plans offered in the exchanges,
sorted by age and income, but also a personal
cost calculator,
in which you punch in the number of people in your household, their ages, and
your family income to get an estimate of both the cost of a mid-level silver
plan and your subsidy.
One fact worth mulling is that the income on which
the subsidy is based is the Modified Adjusted Gross Income (MAGI) based
on IRS filings. That's a reminder that the premium subsidy is another tax cut (offset in large part by increased taxes on the wealthy, employers, medical device makers and others). The ACA's premium support is one more
benefit credited negatively, by lowering the tax bill, the social
service mechanism of choice for a tax-averse polity. Bowing to
preferred conservative methods, we've added another subaqueous pillar to
the
Submerged State.
The "m" in
MAGI is important, however, as it
modifies
the adjusted gross income (AGI) we're all familiar with on our tax forms by adding important deductions back into the
total --
e.g., student loan interest, tuition, IRA contributions, and the
deduction for half the self-employment tax. The "m" in some measure avoids piling subsidy
on subsidy, or augmenting one incentive with another.
The
use of MAGI rather than AGI is bad news for the self employed, who I
assume make up a large proportion of those who make enough money
to qualify for premium subsidies but who lack access to
employer-provided health insurance. But it could be worse.