| January | February | March | April | May | June | July | August | September | October | November | December |
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| Sun | Monday | Tuesday | Wednesday | Thursday | Friday | Sat |
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| 1 Deposit payroll tax for payments on Aug 25–27 if the semiweekly deposit rule applies. |
2 | 3 |
4 | |||
| 5 | 6 Labor Day |
7 | 8 | 9 Deposit payroll tax for payments on Sep 1–3 if the semiweekly deposit rule applies. |
10 Employers: Employees are required to report to you tips of $20 or more earned during August. Deposit payroll tax for payments on Sep 4–7 if the semiweekly deposit rule applies |
11 |
| 12 | 13 |
14 | 15 |16 9/15 - Individuals: Pay the third installment of your estimated tax for 2010. Partnerships: File 2009 Form 1065 if you timely requested a 5-month extension. Corporations: File calendar year 2009 Form 1120 or 1120S if you timely requested a 6-month extension. Deposit third installment of 2010 estimated tax. Employers: Deposit payroll tax for payments on Sep 8–10 if the semiweekly deposit rules apply. Deposit payroll tax for Aug if the monthly deposit rule applies. |
17 Deposit payroll tax for payments on Sep 11–14 if the semiweekly deposit rule applies. |
18 | |
| 19 | 20 | 21 | 22 Deposit payroll tax for payments on Sep 15-17 if the semiweekly deposit rule applies |
23 | 24 Deposit payroll tax for payments on Sep 18-21 if the semiweekly deposit rule applies. |
25 |
| 26 | 27 | 28 | 29 Deposit payroll tax for payments on Sep 22-24 if the semiweekly deposit rule applies. |
30 File Form 730 and pay tax on wagers accepted during Aug. File Form 2290 and pay the tax for vehicles first used during Aug. |
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