#tax-deadlines
Important tax filing deadlines and compliance dates to remember
Form 3520-A is the annual information return for a foreign trust with a U.S. owner, due March 15. If the foreign trustee does not file, Section 6677 imposes an initial 5% penalty on trust assets plus $10,000 per 30-day continuation period — payable by the U.S. owner. Covers who files, the substitute filing path, the reasonable-cause defense, and how to clean up multi-year non-compliance.
Section 7508A lets the IRS postpone almost any tax-related deadline by up to one year after a federally declared disaster. This guide explains who qualifies as an affected taxpayer, how postponement interacts with Form 4868, what happens to penalties already accruing, and when to elect a prior-year casualty loss under Section 165(i).
Section 7508A lets the IRS postpone tax deadlines up to one year for taxpayers in federally declared disaster counties—usually automatically by address. A Section 165(i) election can also move a casualty loss to the prior year's return for a faster refund.
Texas raised the franchise tax no-tax-due threshold to $2.65 million for 2026 and 2027 reports, but LLCs and corporations still owe a Public Information Report by May 15. Missing it triggers forfeiture, personal liability for officers, and loss of access to Texas courts.
A working guide to the 2026 quarterly estimated tax rules for freelancers and self-employed earners — the two IRS safe harbors (90% current year, 100%/110% prior year), the four uneven due dates, Form 1040-ES, the annualized income method for lumpy earners, EFTPS vs Direct Pay, and the mistakes that trigger penalties at the 6–7% federal rate.
Schedules K-2 and K-3 pulled even purely domestic partnerships and S-corps into international tax reporting starting in 2021. This guide explains the 2026 filing rules, the four-condition domestic filing exception, the January 15 partner notification and February 15 1-month K-3 request deadlines for calendar-year filers, the $250,000 small entity carve-out added in 2024, and the per-partner, per-month penalty math for non-compliance.
Form 2290 funds federal highway maintenance through an annual excise tax on vehicles with a taxable gross weight of 55,000 pounds or more. Owner-operators and fleets owe up to $550 per truck and must file by August 31 — late filings trigger a 4.5% monthly penalty and DMV registration suspension.
Form W-2c fixes errors on previously filed W-2s, but the penalty structure stacks behind the original February 2 due date — $60, $130, $340, or $680 per form depending on how late you file. A practical guide to W-2c and W-3c filing, the 10-return e-file threshold, SSA mismatch letters, and reconciling with Form 941-X.
How Applicable Large Employers file Forms 1094-C and 1095-C for the 2025 reporting year. Covers the March 2 and March 31, 2026 deadlines, the post-2024 furnishing-on-request rule, the 2026 penalty amounts ($3,340 and $5,010 per employee), the new 90-day Letter 226-J response window, and the Line 14/16 coding errors that most often trigger IRS audits.
Starting filing season 2026, the IRS will apply First-Time Penalty Abatement automatically for taxpayers with a clean three-year compliance record — wiping Failure-to-File, Failure-to-Pay, and Failure-to-Deposit penalties without a phone call or Form 843. Here is how the rollout works, who qualifies, and when reasonable cause is the smarter move.
For plan years ending in 2025, self-insured plan sponsors and HRA employers must file Form 720 by July 31, 2026 and pay $3.84 per covered life ($3.47 for plan years ending before October 1, 2025). This guide covers who owes the fee, the three approved methods to calculate average covered lives, why HRAs count employees only, and the common Form 720 filing mistakes that trigger IRS notices.
Filing IRS Form 706 to elect portability lets a surviving spouse inherit up to $15 million of unused federal estate tax exemption (the DSUE), shielding combined estates of up to $30 million from the 40% federal estate tax in 2026. Miss the nine-month deadline and Rev. Proc. 2022-32 still allows a late election within five years of death.
