July 15

• Employers should deposit Social Security, Medicare and withheld income taxes for June if the monthly deposit rule applies. They should also deposit non-payroll withheld income tax for June if the monthly deposit rule applies.

July 31

• Report income tax withholding and FICA taxes for second quarter 2024 (Form 941) and pay any tax due. (See the exception below, under “August 12.”)

• File a 2023 calendar-year retirement plan report (Form 5500 or Form 5500-EZ) or request an extension.

August 12

• Report income tax withholding and FICA taxes for second quarter 2024 (Form 941), if you deposited on time and in full all the associated taxes due.

September 16

• If a calendar-year C corporation, pay the third installment of 2024 estimated income taxes.

• If a calendar-year S corporation or partnership that filed an automatic six-month extension:

• • File a 2023 income tax return (Form 1120-S, Form 1065 or Form 1065-B) and pay any tax, interest and penalties due.
  • Make contributions for 2023 to certain employer-sponsored retirement plans.

• Employers should deposit Social Security, Medicare and withheld income taxes for August if the monthly deposit rule applies. They should also deposit non-payroll withheld income tax for August if the monthly deposit rule applies.

(This is Blog Post #1599)