#tax-filing
Tax filing procedures, deadlines, and best practices
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.
How non-willful US taxpayers use the IRS Streamlined Filing Compliance Procedures to catch up on FBAR, Form 8938, and three years of late returns—zero penalty under SFOP for taxpayers abroad, a one-time 5% miscellaneous offshore penalty under SDOP for domestic filers, plus what the non-willfulness certification must demonstrate.
Nonprofits with gross receipts of $50,000 or less file Form 990-N; those under $200,000 receipts and $500,000 assets file 990-EZ; everyone else files the full 990. This guide covers thresholds, deadlines, late penalties up to $120 per day, and the three-year automatic revocation rule that quietly strips exempt status.
A Solo 401(k) crosses into mandatory Form 5500-EZ filing once combined plan assets exceed $250,000 on the last day of the plan year. Late filings cost $250 per day up to $150,000 annually, but Rev. Proc. 2015-32 caps catch-up filings at $1,500 per plan if no penalty notice has been issued.
Self-employed filers can claim the federal Earned Income Tax Credit on Schedule C net earnings, with a 2025 maximum of $8,046 for families with three or more children. This guide covers eligibility thresholds, how to compute earned income (including the half-SE-tax adjustment), the documentation that survives an audit, and the pitfalls that disqualify otherwise valid claims.
A six-week framework for small business owners to catch up unreconciled books, assemble a standardized year-end financial package, and hand off cleanly to an accountant—anchored by the 2026 federal filing deadlines.
A step-by-step walkthrough of business tax filing by entity type — Schedule C for sole props, Form 1065 for partnerships, 1120-S for S-corps, and 1120 for C-corps — with 2026 deadlines, document checklists, audit triggers, and when DIY software stops being enough.
A working guide to IRS Form 1065 for multi-member LLCs and partnerships—what the information return reports, who must file, the March 16, 2026 deadline, the $260-per-partner monthly late penalty, and the bookkeeping habits that prevent K-1 errors.
A four-member LLC that files Form 1065 six months late owes about $6,240 in federal penalties before any state assessment. This 2026 guide details every federal and state penalty an LLC can face for non-filing, the cascade of secondary consequences, and the step-by-step path back to good standing — including how First-Time Abate can wipe out the entire federal penalty in a single phone call.
A 2026 calendar of LLC tax deadlines by IRS classification — single-member LLCs file Schedule C on April 15, multi-member partnerships and S-corps file Forms 1065 and 1120-S on March 16, C-corps file Form 1120 on April 15. Covers Form 7004 extensions, quarterly estimates, and the $245-per-partner late-filing penalty.
The IRS charges 5% per month for late filing (capped at 25%) plus 0.5% per month for late payment, with daily-compounding interest at 7% in Q1 2026. This guide details how each penalty is calculated and four programs — First-Time Abatement, reasonable cause, installment agreements, and Offer in Compromise — that can reduce or remove what you owe.
A line-by-line walkthrough of the 2026 deductions and credits that move the needle for individuals—the $16,100 standard deduction, the new $40,400 SALT cap, the $2,200 Child Tax Credit, the up-to-$8,231 EITC, and the new Schedule 1-A deductions for tips, overtime, and vehicle loan interest.
