Tax Law and News September 2018 Tax and Compliance Deadlines Read the Article Open Share Drawer Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Click to share on LinkedIn (Opens in new window) LinkedIn Written by Intuit Accountants Team Published Aug 31, 2018 2 min read Happy September. This is your monthly summary of important tax and compliance deadlines for your review. In September, it’s recommended that you: Schedule appointments with individual clients for year-end tax planning sessions. Remind individual clients of automatic six-month extensions of Oct. 15 filing deadline for 2018 returns. File returns for calendar-year corporations and partnerships that obtained automatic extensions. Key Compliance Dates: Thursday, Sept. 6 – Semiweekly depositors deposit FICA and withheld income tax on wages paid on Aug. 29-31. Friday, Sept. 7 – Semiweekly depositors deposit FICA and withheld income tax on wages paid on Sept. 1-4. Monday, Sept. 10 – Tipped employees who received $20 or more in tips during August report them to the employer on Form 4070. Wednesday, Sept. 12 – Semiweekly depositors deposit FICA and withheld income tax on wages paid on Sept. 5-7. Friday, Sept. 14 – Semiweekly depositors deposit FICA and withheld income tax on wages paid on Sept. 8-11. Monday, Sept. 17 Monthly depositors deposit FICA and withheld income tax for August. Individuals and calendar-year corporations pay third installment of 2017 estimated tax. Calendar-year corporations file 2017 income tax return (Form 1120 for C corporations; 1120S for S corporations) if automatic extension was obtained. Partnerships file 2017 Form 1065 if automatic extension was obtained. Wednesday, Sept. 19 – Semiweekly depositors deposit FICA and withheld income tax on wages paid on Sept. 12-14. Friday, Sept. 21 – Semiweekly depositors deposit FICA and withheld income tax on wages paid on Sept. 15-18. Wednesday, Sept. 26 – Semiweekly depositors deposit FICA and withheld income tax on wages paid on Sept. 19-21. Friday, Sept. 28 – Semiweekly depositors deposit FICA and withheld income tax on wages paid on Sept. 22-25. Intuit® ProConnect™ Resources: The September 2018 calendar with filing deadlines and reminders for you and your clients Key Tax Facts for 2017 and Key Tax Facts for 2018 New Tax Developments for 2017 and Beyond and 5 Key Tax Changes for Your Clients in 2018 As always, visit Intuit ProConnect for more information and training resources. Previous Post Accounting for Cannabis: Grow your Niche Within the Accounting Industry Next Post The $123 Billion Cost of Employment Tax Violations Written by Intuit Accountants Team The Intuit® Accountants team provides ProConnect™ Tax, Lacerte® Tax, ProSeries® Tax, and add-on software and services to enable workflow for its customers. Visit us online or follow us on X, Instagram, Facebook, and LinkedIn. More from Intuit Accountants Team Comments are closed. Browse Related Articles Practice Management Setting up a results-only workplace Webinars What’s New in ProConnect Tax: June 19 Webinars Guide to Tax Planning Tools in ProSeries: July 8 Webinars How to Know and Own Your Value: June 26 Webinars Intuit Select Pro Staffing: June 17 Webinars Firm Technology & Automation: June 25 Client Relationships Google review templates for tax pros Workflow tools ProConnect™ Tax AI-powered Client Briefing Workflow tools Early onboarding is a must for new tax software Tax Law and News June 2025 tax and compliance deadlines