George W. Colburn, CPA
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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
Previous Month Next Month October 2023
2022 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2024
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
24 September
25
Sales & Use (SUT-451)
Employment (WHT-430)
26
27
Employment (Semi-weekly Employment Deposit)
Employment (Semi-weekly Employment Deposit)
Employment (Semi-weekly Employment Deposit)
28
29
Employment (Semi-weekly Employment Deposit)
Employment (Semi-weekly Employment Deposit)
Employment (Semi-weekly Employment Deposit)
30
1
2
Individual Income (1041)
Individual Income (1041)
Individual Income (1041)
Individual Income (FIT-161)
Individual Income (FIT-161)
Individual Income (FIT-161)
3
4
Employment (Semi-weekly Employment Deposit)
Employment (Semi-weekly Employment Deposit)
Employment (Semi-weekly Employment Deposit)
5
6
Employment (Semi-weekly Employment Deposit)
Employment (Semi-weekly Employment Deposit)
Employment (Semi-weekly Employment Deposit)
7
8
9
10
Individual Income (4070)
11
Employment (Semi-weekly Employment Deposit)
12
Employment (Semi-weekly Employment Deposit)
Employment (Semi-weekly Employment Deposit)
13
Employment (Semi-weekly Employment Deposit)
Employment (Semi-weekly Employment Deposit)
Employment (Semi-weekly Employment Deposit)
14
15
16
Individual Income (1040)
Individual Income (5471)
Employment (Monthly Employment Deposit)
Corporate Income/Franchise (5471)
Corporate Income/Franchise (1120)
Employment (5500)
Pass-Through Income (BT-Summary)
Pass-Through Income (NH-1065)
Pass-Through Income (BET)
Corporate Income/Franchise (355)
Pass-Through Income (MA NRCR)
Pass-Through Income (BI-471)
Pass-Through Income (BI-471)
Pass-Through Income (BI-471)
Pass-Through Income (BI-471)
Sales & Use (Sales/Use I-File)
Sales & Use (Sales/Use I-File)
Corporate Income/Franchise (1120ME)
Pass-Through Income (1040ME)
Individual Income (IN-111)
Individual Income (1)
Individual Income (2)
Individual Income (1-NR/PY)
Individual Income (1041ME)
Individual Income (1040ME)
17
18
Employment (Semi-weekly Employment Deposit)
Employment (Semi-weekly Employment Deposit)
Employment (Semi-weekly Employment Deposit)
19
20
Employment (Semi-weekly Employment Deposit)
Sales & Use (ST-9)
Sales & Use (ST-9Q)
Sales & Use (ST-MAB-4)
Employment (Semi-weekly Employment Deposit)
Employment (Semi-weekly Employment Deposit)
21
22
23
24
25
Employment (Semi-weekly Employment Deposit)
Employment (Semi-weekly Employment Deposit)
Employment (WHT-436)
Sales & Use (SUT-451)
Sales & Use (SUT-451)
Employment (WHT-436)
Employment (WHT-436)
Employment (Semi-weekly Employment Deposit)
26
27
Employment (Semi-weekly Employment Deposit)
Employment (Semi-weekly Employment Deposit)
Employment (Semi-weekly Employment Deposit)
28
29
30
31
Employment (941)
Employment (FUTA)
Employment (DES 200)
Employment (M-941)
Employment (M-941)
Employment (M-941)
Employment (EFILE)
Pass-Through Income (MassTaxConnect)
Pass-Through Income (MassTaxConnect)
Pass-Through Income (MassTaxConnect)
Employment (C-101)
Pass-Through Income (901ES-ME)
Employment (941ME)
Employment (ME UC-1)
1 November
Employment (Semi-weekly Employment Deposit)
Employment (Semi-weekly Employment Deposit)
Employment (Semi-weekly Employment Deposit)
2
3
Employment (Semi-weekly Employment Deposit)
Employment (Semi-weekly Employment Deposit)
Employment (Semi-weekly Employment Deposit)
4
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