January 15 – Final 2015 individual estimated tax payment is due, unless your 2015 tax return is filed and taxes are paid in full by February 1, 2016.
January 15 – Due date for calendar-year trusts and estates to pay final installment of 2015 estimated tax.
February 1 – Employers must furnish employees with W-2 statements for 2015. Payers must furnish 1099 information statements for 2015 to payees. (Deadline for Form 1099-B and consolidated statements is February 16.)
February 1 – Employers must generally file 2015 federal unemployment tax returns and pay any tax due.