Due Dates

Calendar

Deadlines

Year
August 2021
10
Tuesday

Employers

Employers - File Form 941 for the second quarter. This due date applies only if you deposited the tax for the quarter in full and on time.

Employees Who Work For Tips

Employees who work for tips - If you received $20 or more in tips during July, report them to your employer. You can use Form 4070 Employee's Report of Tips to Employer.

15
Sunday

Employers

Employers - Nonpayroll Withholding. If the monthly deposit rule applies, deposit the tax for payments in July.

Employers

Employers - Social Security, Medicare, and withheld income tax. If the monthly deposit rule applies, deposit the tax for payments in July.

September 2021
10
Friday

Employees Who Work For Tips

Employees who work for tips - If you received $20 or more in tips during August, report them to your employer. You can use Form 4070 Employee's Report of Tips to Employer.

15
Wednesday

Individuals

Individuals - Make a payment of your current year estimated tax if you are not paying your income tax for the year through withholding (or will not pay in enough tax that way). Use Form 1040-ES. This is the third installment date for estimated tax in the current year.

Partnerships

Partnerships - File Form 1065. This due date applies only if you were given an additional 6-month extension. Provide each partner with a copy of Schedule K-1 (Form 1065) or a substitute K-1.

Electing Large Partnerships

Electing large partnerships - File Form 1065-B. This due date applies only if you were given an additional 6-month extension. See March 15 for the due date for furnishing the Schedules K-1 to the partners.

S Corporations

S Corporations - File Form 1120S and pay any tax due. This due date applies only if you timely requested an automatic 6-month extension. Otherwise, see March 15. Provide each shareholder with a copy of Schedule K-1 (Form 1120S) or a substitute Schedule K-1.

Corporations

Corporations - Deposit the third installment of your estimated income tax. A worksheet, Form 1120-W, is available to help you make an estimate of your tax for the year.