#tax-deadlines
Tax Deadlines
Important tax filing deadlines and compliance dates to remember
COVID-19 Tax Penalty Refunds: Your Last Chance Before July 10, 2026
A small business owner's guide to filing Form 843 for COVID-era penalty refunds under the Kwong ruling, with step-by-step instructions and eligibility criteria before the July 10, 2026 deadline.
Canada's New Bare Trust Reporting Rules Under Bill C-15: Who Actually Has to File for the 2026 Tax Year
Bill C-15 makes bare trust reporting mandatory in Canada for tax years ending on or after December 31, 2026, with T3 and Schedule 15 filings due March 31, 2027. Covers which small-business arrangements count as bare trusts, the narrow $50,000/three-month exemption, and penalties up to 5% of trust property value.
Form T2125 in 2026: How Canadian Sole Proprietors File Business Income, CPP, and NETFILE Without Triggering a CRA Review
Form T2125 turns a Canadian sole proprietor's invoices and receipts into taxable net business income on the T1 return. For 2026, gig platforms report earnings directly to the CRA, self-employed CPP totals nearly $9,300 at the earnings ceiling, and the June 15 filing extension still leaves payment due April 30.
Ireland's Self-Employed Tax Guide for 2026: Form 11, Preliminary Tax, and the PRSI Rate Rise
Irish sole traders filing Form 11 in 2026 face a mid-year PRSI Class S rise from 4.2% to 4.35% on October 1, a €650 minimum PRSI charge, and the preliminary tax rule requiring 100% of prior-year or 90% of current-year liability by October 31 — with a ROS extension to mid-November for those who file and pay online.
You Missed the July 4 Solar Deadline. Here's What's Actually Left of the Business Tax Credit
Businesses that missed the July 4, 2026 begin-construction deadline can still claim the 30% Section 48E solar credit — but only if the system is placed in service by December 31, 2027, with no partial credit after. Covers the under-1 MW prevailing-wage exemption, domestic content and energy community adders, MACRS plus 100% bonus depreciation, selling the credit under Section 6418, and the 10-year FEOC clawback risk.
Louisiana Tropical Storm Arthur Tax Relief: What the November 2, 2026 IRS Deadline Covers for Business Owners
After Tropical Storm Arthur struck Louisiana on June 17, 2026, the IRS postponed federal tax deadlines to November 2, 2026 for Avoyelles, St. Landry, St. Tammany, and Terrebonne Parishes under FEMA declaration 4927-DR. The relief covers returns and estimated payments automatically — but not payroll tax deposits or 1099s — and a Section 165(i) election lets storm-damaged businesses claim casualty losses on last year's return.
The St. Louis Tornado Tax Deadline Has Passed — Here's What Business Owners Still Need to Know
The IRS pushed most federal tax deadlines for the May 16, 2025 St. Louis tornado (FEMA DR-4877) to November 3, 2025 — but the Section 165(i) election to deduct disaster losses on a 2024 return stays open until October 15, 2026, and penalty-free retirement withdrawals and SBA loans up to $2 million remain in play for affected businesses.
Typhoon Sinlaku Tax Relief for the Northern Mariana Islands: What the November 2, 2026 IRS Deadline Covers
After Super Typhoon Sinlaku struck Saipan, Tinian, Rota, and the Northern Islands on April 11, 2026 (FEMA declaration DR-4910), the IRS postponed filing and payment deadlines falling between April 11 and November 2, 2026 to November 2 — automatically, for any taxpayer with an address of record in the CNMI. Here's what's covered, the April 27 payroll-deposit cutoff that already passed, and the Section 165(i) election that can put a refund in your hands by October 15.
Wepplo v. Commissioner: The Tax Court Case That Could Refund COVID-Era IRS Interest
The U.S. Tax Court is weighing whether IRC Section 7508A(d) barred the IRS from charging interest between January 20, 2020 and July 10, 2023. Building on Abdo and Kwong, Wepplo v. Commissioner gives taxpayers with a Tax Court decision a one-year Rule 261 window to seek interest redetermination — independent of the July 10, 2026 protective refund claim deadline.
Suvarna v. United States: Why the Tax Refund Deadline Accepts Almost No Excuses
In Suvarna v. United States (2026), the Court of Federal Claims dismissed a $53,521 refund claim filed six months late — even though the taxpayer spent those years as his dying mother's full-time caregiver. The case explains the three-year/two-year refund deadline, why the financial disability exception rarely applies, and how business owners can catch overpayments before the clock runs out.
Hawaii Storm Tax Relief: What the August 20, 2026 IRS Deadline Covers — and the Earlier State Deadline It Doesn't
The IRS postponed tax deadlines to August 20, 2026 for Honolulu, Maui, and Kauai counties after the March 2026 Kona Low storms — but Hawaii's separate Form L-115 state relief closes July 20, and SBA loan deadlines fall on August 13, 2026 (physical damage) and January 7, 2027 (EIDL). Here's who qualifies, what's automatic, and the casualty-loss election that can accelerate a refund.
The Section 174 R&D Catch-Up Deadline Just Passed. Here's What Small Businesses Should Do Now
The OBBBA's one-time retroactive Section 174 election for 2022–2024 R&D amortization closed July 6, 2026, but the standard three-year R&D credit window and permanent 2025+ immediate expensing under Section 174A remain available to small businesses.