17 – The fourth installment of 2016 individual estimated tax is due.

31 – Due date for employers to furnish W-2 statements to employees, and also file Forms W-2 with the Social Security Administration (both paper and electronic forms).

31 – Provide 1099 information statements to recipients.

31 – Employers must file 2016 federal unemployment and payroll tax returns and pay any tax due.

28 – Payers must file information returns such as 1095s and most 1099s (except certain Forms 1099-MISC due January 31) with the IRS (March 31 if filing electronically).

2 – Applicable large employers (generally employers with 50 or more full-time employees in the previous year) must furnish Forms 1095-C to employees.