Replies

This is where ther 20K comes from- but the actual premium is $2600 if you read the whole paragraph.
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Example 2. Family. (i) In 2016 Taxpayers M and N are married and file a joint
return. M and N have two children, P and Q. M, N, P, and Q are ineligible to enroll in
minimum essential coverage other than coverage in the individual market for a month in
2016. The annual premium for M, N, P, and Q’s applicable plan is $20,000. The
adjusted annual premium for M, N, P, and Q’s applicable benchmark plan (within the
meaning of §1.36B-3(f)) is $25,000. M and N’s household income is $80,000, which is
347 percent of the Federal poverty line for a family size of 4 for the taxable year.
(ii) Under paragraph (e)(4)(ii)(C) of this section, the credit allowable under section
36B is determined pursuant to section 36B. With household income at 347 percent of
the Federal poverty line, the applicable percentage is 9.5. Because each month in 2016
is a coverage month (within the meaning of §1.36B-3(c)), the maximum credit allowable
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under section 36B is the excess of the premium for the applicable benchmark plan over
the product of the household income and the applicable percentage ($17,400).
Therefore, under paragraph (e)(4)(ii)(A) of this section, the required contribution for M,
N, P, and Q is $2,600. Under paragraph (f)(2) of this section, M, N, P, and Q have
affordable coverage for 2016 because their required contribution ($2,600) does not
exceed 8 percent of their household income ($6,400).

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http://www.irs.gov/PUP/newsroom/REG-148500-12%20FR.pdf