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| Tue | 3 | File Form 730 and pay tax on wagers accepted during July. |
| Tue | 3 | File Form 2290 and pay the tax for vehicles first used during July. |
| Thu | 5 | Deposit payroll tax for payments on Aug 28-30 if the semiweekly deposit rule applies. |
| Fri | 6 | Deposit payroll tax for payments on Aug 31 – Sep 3 if the semiweekly deposit rule applies. |
| Tue | 10 | Employers: Employees are required to report to you tips of $20 ore more earned during August. |
| Wed | 11 | Deposit payroll tax for payments on Sep 4-6 if the semiweekly deposit rule applies. |
| Fri | 13 | Deposit payroll tax for payments on Sep 7-10 if the semiweekly deposit rule applies. |
| Mon | 16 | Individuals: Pay the third installment of your 2013 estimated tax. |
| Mon | 16 | Partnerships: File Form 1065 if you timely requested a 5-month extension. |
| Mon | 16 | Corporations: File calendar year Form 1120 or 1120S if you timely requested a 6-month extension. |
| Mon | 16 | Corporations: Deposit the third installment of your 2013 estimated tax. |
| Mon | 16 | Deposit payroll tax for Aug if the monthly deposit rule applies. |
| Wed | 18 | Deposit payroll tax for payments on Sep 11-13 if the semiweekly deposit rule applies. |
| Fri | 20 | Deposit payroll tax for payments on Sep 14-17 if the semiweekly deposit rule applies. |
| Wed | 25 | Deposit payroll tax for payments on Sep 18-20 if the semiweekly deposit rule applies. |
| Fri | 27 | Deposit payroll tax for payments on Sep 21-24 if the semiweekly deposit rule applies. |
| Mon | 30 | File Form 730 and pay tax on wagers accepted during August. |
| Mon | 30 | File Form 2290 and pay the tax for vehicles first used during August. |
