Note that: this is for my own use. Please do not read.
Individual $3,300, Family $6,550 (source)
Is the money paid out of it deductible
Can I itemize medical expenses that I paid for out of my HSA account? The answer is no. (source) Although this is not an official answer, it makes sense.
Federal Income Tax Brackets (2014)
Federal Income Tax Brackets (2015)
$17,500 per person in 2013 and 2014, $18,000 in 2015
Estimated for 2014: $6,200 individual, $12,200 family (source)
2015: $12,260 for family source
Full amount is $5500, for married filling jointly, with a modified AGI of <=$96,000. This amount is per person. For AGI $116,000 or more, no deduction.
It can be borrowed out for 60 days. There does not seem to be a limit on the amount.
AGI: Line 38 of 1040, is before standard/itemized deductions.
Contributions can be made to a prior year until Apr.15
401k contributions are exempt from AMT calculations. (source)