• Deadline for businesses to provide 2016 W-2 and 1099 forms to taxpayers.
• Deadline for businesses to submit 2016 W-2 forms to the Social Security Administration.
• Deadline for businesses to submit 2016 forms 1099-MISC forms to the IRS if they are reporting nonemployee compensation.
• Due date for fourth-quarter 2016 Form 941, Employer's Quarterly Federal Tax Return.
• Due date for fourth-quarter 2016 state and local employer withholding returns and unemployment compensation returns.
• Due date for fourth-quarter 2016 individual local estimated tax payments in many Pennsylvania municipalities.