Tankel Rosenberg & Co., PC

Certified Public Accountants

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Events Calendar

The interactive calendar highlights federal and state tax due dates, special firm events and other important dates that may be of interest to you. The calendar is updated regularly, so check back often to keep track of filing requirements, deadlines, and other events that will help you stay current and up-to-date.

The calendar below shows important tax due dates and other events. Events have been categorized as Individual, Business and State tax due dates, as well as general Firm events. Hover over an event to view its details.

Business

Individual

Firm

State

October 2025

2024

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

2026

Sunday

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

28 September

Employment (WEEKLY)

Individual Income (1041)

Individual Income (141AZ)

Sales & Use (CDTFA-401-A)

Individual Income (CT-1041)

Sales & Use (OS-114)

Corporate Income/Franchise (F-1120ES)

Employment (L-1V)

Employment (Electronic Deposit)

Sales & Use (ST-9)

Sales & Use (Electronic Filing)

Individual Income (M2)

Individual Income (IT-205)

Individual Income (PA-41)

Individual Income (RI-1041)

Individual Income (FIT-161)

Employment (Semi-weekly Employment Deposit)

Employment (Weekly Employment Deposit)

Pass-Through Income (F-1065)

Employment (Semi-weekly Employment Deposit)

Employment (Semi-monthly Employment Deposit)

Employment (Semi-weekly Employment Deposit)

Employment (WEEKLY)

Employment (Semi-weekly Employment Deposit)

Employment (Weekly Employment Deposit)

Employment (Semi-weekly Employment Deposit)

Individual Income (Statement)

Employment (Semi-weekly Employment Deposit)

Employment (WEEKLY)

Individual Income (1040)

Individual Income (5471)

Employment (Monthly Employment Deposit)

Corporate Income/Franchise (5471)

Corporate Income/Franchise (1120)

Employment (5500)

Individual Income (140)

Individual Income (140PY)

Individual Income (140NR)

Employment (A1-WP)

Pass-Through Income (140NR)

Individual Income (541)

Individual Income (540)

Individual Income (540NR)

Employment (DE 88/DE 88ALL)

Pass-Through Income (540NR)

Pass-Through Income (568)

Pass-Through Income (565)

Individual Income (CT-1040)

Individual Income (CT-1040NR/PY)

Employment (Electronic Deposit)

Employment (HW-14)

Employment (VP-1)

Employment (L-1)

Individual Income (1)

Individual Income (2)

Individual Income (1-NR/PY)

Corporate Income/Franchise (355)

Pass-Through Income (MA NRCR)

Individual Income (1041ME)

Individual Income (1040ME)

Employment (Semi-weekly Employment Deposit)

Sales & Use (Sales/Use I-File)

Pass-Through Income (1040C-ME)

Individual Income (M1)

Individual Income (M2)

Employment (Withholding Deposit Payment)

Pass-Through Income (BT-Summary)

Pass-Through Income (NH-1065)

Pass-Through Income (BET)

Individual Income (IT-201)

Individual Income (IT-203)

Pass-Through Income (IT-203-S)

Pass-Through Income (IT-203-GR)

Corporate Income/Franchise (CT-3)

Individual Income (PA-40)

Employment (PA-501)

Employment (Semi-weekly Employment Deposit)

Pass-Through Income (PA-40ES (P/S))

Pass-Through Income (PA-40 NRC)

Individual Income (RI-1040)

Individual Income (RI-1040NR)

Corporate Income/Franchise (RI-1120C)

Pass-Through Income (RI-1065)

Individual Income (IN-111)

Pass-Through Income (BI-471)

Employment (Semi-weekly Employment Deposit)

Employment (Weekly Employment Deposit)

Employment (Semi-weekly Employment Deposit)

Sales & Use (TPT-EZ)

Sales & Use (TPT-2)

Sales & Use (DR-15)

Individual Income (N-40)

Individual Income (N-11)

Individual Income (N-15)

Sales & Use (G-45)

Corporate Income/Franchise (N-30)

Pass-Through Income (N-35)

Pass-Through Income (N-20)

Pass-Through Income (N-66)

Corporate Income/Franchise (F-1)

Pass-Through Income (N-15)

Sales & Use (R-1029)

Sales & Use (MN E-Services)

Sales & Use (ST-809)

Sales & Use (PA-3)

Employment (Semi-monthly Employment Deposit)

Employment (WEEKLY)

Sales & Use (RI-STR)

Employment (Semi-weekly Employment Deposit)

Employment (Weekly Employment Deposit)

Employment (Semi-weekly Employment Deposit)

Employment (WEEKLY)

Employment (WHT-436)

Sales & Use (SUT-451)

Employment (WHT-436)

Employment (Semi-weekly Employment Deposit)

Employment (Weekly Employment Deposit)

Employment (Semi-weekly Employment Deposit)

Sales & Use (ST-9)

Sales & Use (ST-9Q)

Sales & Use (Electronic Filing)

Employment (941)

Employment (FUTA)

Employment (Semi-weekly Employment Deposit)

Employment (A1-QRT)

Employment (UC-018)

Employment (Semi-weekly Employment Deposit)

Employment (DE 9)

Employment (DE 88/DE 88ALL)

Employment (Semi-weekly Employment Deposit)

Employment (DE 9C)

Sales & Use (CDTFA-401-A)

Employment (CT-941)

Employment (UC-5A/UC-2)

Sales & Use (OS-114)

Employment (RT-6)

Employment (UC-B6)

Employment (Semi-weekly Employment Deposit)

Employment (L-1)

Employment (LWC-ES4)

Employment (Electronic Deposit)

Employment (M-941)

Employment (EFILE)

Pass-Through Income (MassTaxConnect)

Pass-Through Income (901ES-ME)

Employment (941ME)

Employment (ME UC-1)

Employment (Semi-weekly Employment Deposit)

Employment (Wage Detail Report)

Employment (Withholding Deposit Payment)

Employment (DES 200)

Employment (NYS-45)

Employment (W-3)

Employment (Semi-weekly Employment Deposit)

Employment (UCMANAGEMENTSYSTEM)

Employment (TX-17)

Employment (RI-941)

Sales & Use (RI-STR)

Employment (C-101)

Employment (Semi-weekly Employment Deposit)

1 November