#tax-deadlines
Important tax filing deadlines and compliance dates to remember
States set LLC annual reports on a fixed date, your anniversary month, or a two-year cycle — miss one and Florida alone adds a $400 late fee before dissolution.
Section 444 lets an S corp or partnership elect a Sept 30, Oct 31 or Nov 30 year end with Form 8716 — in exchange for a Form 8752 deposit due every May 15.
File by October 15 and the IRS failure-to-file penalty — 5% a month, ten times the failure-to-pay rate — stops; it is also the last day to fund a 2025 SEP-IRA.
A US investment club is a partnership from the first deposit — Form 1065 is due March 15 every year, and filing late costs $255 per partner per month.
IRS Free File is open to AGI of $89,000 or less for 2026, and Direct File is gone. Start at IRS.gov or your free return quietly becomes a paid one.
California employers owe 1.8% FUTA for 2025 — $126 per employee instead of $42. Report the credit reduction on Schedule A of Form 940, due with the Q4 deposit.
UAE Small Business Relief ends for tax periods after December 31, 2026 — elect it on your final return, but skip it in a loss year to keep the carryforward.
Form 5500 is due July 31 for calendar-year plans; IRS late penalties run $250 a day up to $150,000, but DFVCP caps small-plan relief at $1,500.
Extended your 2025 return? You can still open and fund a SEP IRA by October 15, 2026 (September 15 for S corps and partnerships) and deduct up to $70,000 — but Solo 401(k) elective deferrals for 2025 are gone for good.
Form 15620 can now be submitted through an IRS Online Account, but the 83(b) election's 30-day deadline still has no routine extension. How the election works, when it pays, how to file online or by certified mail, and the six mistakes that sink it.
A late Form 1065 or 1120-S costs $255 per owner per month for up to 12 months under IRC 6698/6699 — even when the entity owes zero tax. Here is how the math works, why first-time abatement does not apply, and how Revenue Procedure 84-35 can zero out the bill for partnerships with 10 or fewer partners.
A disallowed Employee Retention Credit starts a two-year statute under Section 6532(a) that appealing does not pause. Since April 2026, taxpayers with six months or less remaining can submit Form 907 through the IRS Document Upload Tool to extend it — who qualifies, how to file, and the five mistakes that still forfeit the refund.
