greencheckSeptember 7 — Federal Holiday (Labor Day)

 

greencheckSeptember 10 — Employees who work for tips. If you received $20 or more in tips during August, report them to your employer.
greencheck September 10 — Communications and air transportation taxes under the alternative method.  Deposit the tax included in amounts billed or tickets sold during the first 15 days of August.
greencheckSeptember 14 — Regular method taxes
Deposit the tax included in amounts billed or tickets sold during the last 16 days of August.

 

greencheckSeptember 15 — Individuals
Make a payment of your 2015 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.

 

greencheckSeptember 15 — Corporations
File a 2014 calendar year income tax return (Form 1120) and pay any tax, interest, and penalties due. This due date applies only if you timely requested an automatic 6- month extension.

 

greencheckSeptember 15 — S Corporations
File a 2014 calendar year income tax return (Form 1120S) and pay any tax due. This due date applies only if you timely requested an automatic 6-month extension.

 

greencheckSeptember 15 — Partnerships
File a 2014 calendar year return (Form 1065). This due date applies only if you were given an additional 5-month extension.

 

greencheckSeptember 15 — Corporations
Deposit the third installment of estimated income tax for 2015.

 

greencheckSeptember 15 — Social security, Medicare, and withheld income tax
If the monthly deposit rule applies, deposit the tax for payments in August.

 

greencheckSeptember 15 — Nonpayroll withholding
If the monthly deposit rule applies, deposit the tax for payments in August.

 

greencheckSeptember 25 — Communications and air transportation taxes under the alternative method.
Deposit the tax included in amounts billed or tickets sold during the last 16 days of August.

 

greencheckSeptember 29 — Regular method taxes
Deposit the tax for the first 15 days of September.

 

greencheckSeptember 29 — Regular method taxes (special September deposit rule)
Deposit the tax for the period beginning September 16 and ending September 26.

 

greencheckSeptember 29 — Communications and air transportation taxes under the alternative method (special September deposit rule). Deposit the tax included in amounts billed or tickets sold during the period beginning September 1 and ending September 11.

 

greencheckSeptember 30 — Wagering tax
File Form 730 and pay the tax on wagers accepted during August.

 

greencheckSeptember 30 — Heavy highway vehicle use tax
File Form 2290 and pay the tax for vehicles first used in August.