January 31, 2018 @ 12:00 am - February 1, 2018 @ 12:00 am Individuals: File your tax return if you did not pay your last installment of estimated tax by Jan 16th (see Form 1040-ES)
January 31, 2018 @ 12:00 am - February 1, 2018 @ 12:00 am Applicable Large Employers provide Forms 1095-C to full time employees; For all other providers of Minimum Essential Coverage, provide Forms 1095-B to responsible individuals.
January 26, 2018 @ 12:00 am - January 27, 2018 @ 12:00 am Deposit payroll tax for payments on Jan 20-23 if the semiweekly deposit rule applies.