2023 US Federal Information Returns - Form 1099-NEC must be filed by all US businesses who made payments to US contractors during 2023
31 January
January
2024
March
2024
1 March
2023 US S-Corporation tax return – Form 1120-S must be filed by all S-Corporations who do not file an extension request
April
2024
15 April
2023 US Corporation tax return – Form 1120 must be filed by all US Corporations who do not file an extension request
2023 State Corporation tax returns must be filed by all US Corporations who do have state nexus and do not file an extension request
2023 Foreign Corporation US tax return – Form 1120-F must be filed by all non-US Corporations who are engaged in a US trade, maintain an office or place of business in the US, and do not file an extension request
2024 Q1 Federal & State tax estimate payments must be made by any US corporation which expects to owe tax in relation to their 2024 tax year
June
2024
17 June
2023 Foreign Corporation US tax return – Form 1120-F must be filed by all non-US Corporations who are engaged in a US trade but do not maintain an office or place of business in the US, and do not file an extension request
2024 Q2 Federal & State tax estimate payments must be made by any US corporation which expects to owe tax in relation to their 2024 tax year
September
2024
16 September
2023 US S-Corporation tax return – Form 1120-S must be filed by all S-Corporations who filed an extension request in March
2024 Q3 Federal & State tax estimate payments must be made by any US corporation which expects to owe tax in relation to their 2024 tax year
October
2024
1 October
15 October
2023 US Corporation tax return – Form 1120 must be filed by all US Corporations who filed an extension in April
2023 State Corporation tax returns must be filed by all US Corporations who do have state nexus and filed an extension request in April
2023 Foreign Corporation US tax return – Form 1120-F must be filed by all non-US Corporations who are engaged in a US trade, maintain an office or place of business in the US, and filed an extension request in April
December
2024
16 December
2023 Foreign Corporation US tax return – Form 1120-F must be filed by all non-US Corporations who are engaged in a US trade but did not maintain an office or place of business in the US, and filed an extension request in June
2024 Q4 Federal & State tax estimate payments must be made by any US corporation which expects to owe tax in relation to their 2024 tax year
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15 March
1 October
31 December
2023 UK Corporate tax returns – Form CT600 must be filed by UK companies within 12 months of the end of the accounting period
15 March
2023 Delaware Annual Franchise Tax Returns must be filed by all business entities incorporated in the state of Delaware
31 December
2023 UK Corporate tax returns – From CT600 must be filed by UK companies within 12 months of the end of the accounting period
2023 UK Corporation tax must be paid by UK companies within 9 months and 1 day of the end of their accounting period
2023 UK Corporation tax must be paid by UK companies within 9 months and 1 day of the end of their accounting period
2023 US Corporation tax return – Form 1120 must be filed by all US Corporations who filed an extension in April
2023 State Corporation tax returns must be filed by all US Corporations who do have state nexus and filed an extension request in April
2023 Foreign Corporation US tax return – Form 1120-F must be filed by all non-US Corporations who are engaged in a US trade, maintain an office or place of business in the US, and filed an extension request in April
2023 Delaware Annual Franchise Tax Returns must be filed by all business entities incorporated in the state of Delaware