Every federal deadline for small business owners, in one list.
Priya Natarajan
4 min read
Most penalties come from missed dates, not wrong numbers. Here are the federal deadlines that apply to most small businesses in 2027.
Quarterly estimates
April 15, June 15, September 15 and January 15, 2028. If you expect to owe more than $1,000, you should be paying these.
Returns
S-corp and partnership returns are due March 15. Individual and C-corp returns are due April 15. Extensions move the filing date, not the payment date.
Information returns
W-2s and 1099-NEC forms are due to recipients and the IRS by January 31. Late forms carry penalties per form, so these add up quickly.
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