January 11 - Report Tips to Employer -
If you are an employee who works for tips and received more than $20 in tips during December, you are required to report them to your employer on IRS Form 4070 no later than January 11.
January 15 - Individual Estimated Tax Payment Due - It’s time to make your fourth quarter estimated tax installment payment for the 2015 tax year.
January 15 - Farmers & Fishermen Estimated Tax Payment Due - If you are a farmer or fisherman whose gross income for 2014 or 2015 is two-thirds from farming or fishing, it is time to pay your estimated tax for 2015 using Form 1040-ES. You have until April 18, 2016 to file your 2015 income tax return (Form 1040). If you do not pay your estimated tax by January 15, you must file your 2015 return and pay any tax due by March 1, 2016 to avoid an estimated tax penalty.