Tax | Important Dates Calendar

26 upcoming events

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Upcoming events

Time shown in+00:00 UTC

02 Feb

Form W-2 must be furnished to employees

Monday 2 February (All day)

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02 Feb

Form 1099-NEC must be furnished to recipients & IRS

Monday 2 February (All day)

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02 Feb

Form 940 (Federal Unemployment Tax) is due

Monday 2 February (All day)

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02 Mar

Form 1099-MISC must be furnished to recipients & IRS for paper filing

Monday 2 March (All day)

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16 Mar

Form 1065 due for calendar-year partnerships

Monday 16 March (All day)

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16 Mar

Form 1120-S due for calendar-year S corporations

Monday 16 March (All day)

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16 Mar

Deadline to elect S corporation for 2025 calendar year

Monday 16 March (All day)

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15 Apr

Form 1040 due for individual taxpayers

Wednesday 15 April (All day)

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15 Apr

Form 1041 due for estates & trusts

Wednesday 15 April (All day)

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15 Apr

Form 1120 due for calendar-year C corporations

Wednesday 15 April (All day)

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15 Apr

FIRST 2025 Estimated Tax Payment Due

Wednesday 15 April (All day)

Information about Estimated Taxes: https://www.irs.gov/businesses/small-businesses-self-employed/estimated-taxes

Direct Pay: https://directpay.irs.gov/directpay/payment?execution=e1s1

Login to IRS.gov to pay: https://www.irs.gov/payments/online-account-for-individuals

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30 Apr

Form 941 for Q1 is due (Federal Payroll Reporting Form)

Thursday 30 April (All day)

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15 May

Form 990 due for calendar year tax-exempt orgs, political orgs, and non-exempt charitable trusts

Friday 15 May (All day)

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15 May

Form 990-PF due for calendar year private foundations & nonexempt charitable trusts

Friday 15 May (All day)

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15 Jun

Second 2025 Estimated Tax Payment Due

Monday 15 June (All day)

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31 Jul

Form 941 for Q2 is due (Federal Payroll Reporting Form)

Friday 31 July (All day)

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15 Sep

Third 2025 Estimated Tax Payment Due

Tuesday 15 September (All day)

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15 Sep

Extended Form 1065 due for calendar-year partnerships

Tuesday 15 September (All day)

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15 Sep

Extended Form 1120-S due for calendar-year S corporations

Tuesday 15 September (All day)

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30 Sep

Extended Form 1041 due for estates & trusts

Wednesday 30 September (All day)

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15 Oct

Extended Form 1040 due for individual taxpayers

Thursday 15 October (All day)

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15 Oct

Extended Form 1120 due for calendar-year C corporations

Thursday 15 October (All day)

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31 Oct

Form 941 for Q3 is due (Federal Payroll Reporting Form)

Saturday 31 October (All day)

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18 Dec

W-9s | 4 week reminder for Lookout Bookkeeping Deadline

Friday 18 December ⋅ 14:00 – 15:00 (UTC)

This is your 4 week reminder that W-9s for all vendors are due to Lookout Bookkeeping for 1099s submission in January. Lookout Bookkeeping requires W-9 information be submitted by January 15th to ensure on-time submission of your 1099s to your vendors. If this information is received late, your 1099s my not be filed on-time.

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15 Jan

FINAL 2026 Estimated Tax Payment *unless you file and pay taxes by 1/31/26

Friday 15 January (All day)

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15 Jan

W-9s are DUE to Lookout Bookkeeping

Friday 15 January ⋅ 14:00 – 15:00 (UTC)

To file your 1099s for all your vendors, we need their W-9 information. This is the deadline to have all W-9 forms submitted to Lookout Bookkeeping to ensure your 1099s are filed on time. If W-9s are received after this date, your 1099 filings may be delayed or late.

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