December Tax Dates
Get a copy of Form 509
with all important calendar dates and information.
Individual - Dec 10
Employees who work for tips
. If you received $20 or more in tips during January, report them to your employer. You can use Form 4070.
Business - Dec 17
. Deposit the fourth installment of estimated income tax for 2018. A worksheet, Form 1120-W, is available to help you estimate your tax for the year.