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Your filing calendar for the year
Built from your entity type and situation — including the filings foreign-owned entities have and almost never hear about until it is late. Download it straight into your calendar.
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Choose your entity type and your 2026 calendar builds here — every date, with what it actually covers.
Questions
About filing deadlines
It moves to the next business day. The same applies to federal holidays — including ones that are easy to forget, like Emancipation Day in the District of Columbia, which has shifted the April filing deadline in past years.
No, and this is the most expensive misunderstanding in tax administration. An extension moves the filing date, not the payment date. Interest and penalties accrue from the original due date on anything unpaid.
Because the estimated tax periods are not equal quarters. The second period covers April and May only. Businesses that budget a fixed amount every three months routinely underpay in June.
1 May. For most for-profit corporations and LLCs, the late fee is substantial and the Division of Corporations does not waive it, and continued failure to file leads to administrative dissolution of the entity. Different rules apply to some entity types, including nonprofit corporations.
Often yes. Some obligations are information returns and annual reports rather than tax returns, so they can be due regardless of profit. A business owned from outside the U.S. in particular can have federal filings that apply even in a year with almost no activity. If that's your situation, talk to us so nothing gets missed.