#tax-deadlines
Tax Deadlines
Important tax filing deadlines and compliance dates to remember
What Happens If You Don't File Taxes? The Real Consequences and How to Get Back on Track
A practical breakdown of what the IRS does when you skip a tax return—5% monthly failure-to-file penalty, Substitute for Return, liens, levies, passport revocation, and the step-by-step path back to compliance.
Missed the Tax Deadline? Here's Exactly What to Do Next
A step-by-step guide to filing late, halting penalties, and setting up IRS payment plans after missing April 15—covering the 5% monthly failure-to-file penalty, the 0.5% failure-to-pay penalty, interest at the short-term rate plus 3%, and the three-year window to claim a refund.
Section 174 R&D Capitalization: The Complete 2026 Guide for Founders and Finance Teams
Section 174 of the U.S. tax code restored immediate domestic R&D expensing in 2025 under the One Big Beautiful Bill Act, and small businesses have until July 6, 2026 to amend 2022–2024 returns and reclaim refunds on previously capitalized research costs.
IRS Form 2210: How to Calculate and Avoid the Underpayment Penalty
How IRS Form 2210 works, when you must file it, the three safe harbors that prevent the underpayment penalty, and how Schedule AI reduces the bill for taxpayers with uneven income. Covers 2026 penalty rates (7% in Q1, 6% in Q2), due dates, and common mistakes.
Form 940: The Complete Guide to Employer's Annual Federal Unemployment Tax Return
Form 940 is the IRS return employers use to report annual FUTA tax liability—6% on the first $7,000 of each employee's wages, reducible to 0.6% with timely state unemployment tax payments. Covers who must file, quarterly deposit thresholds, how to claim the state tax credit, Schedule A for multi-state employers, and penalties for late filing.
Form 941: The Complete Guide for Employers
Form 941 is the quarterly payroll tax return every employer must file—reporting withheld income tax, Social Security, and Medicare. Covers who files, 2026 deadlines, how to complete each section, penalty rates (up to 15% for late deposits), and the $100,000 next-day deposit rule.
How Long Can You Go Without Filing Taxes? The Real Consequences Explained
The IRS has no grace period for unfiled returns—failure-to-file penalties run 5% per month up to 25%, the statute of limitations never starts on an unfiled return, and refunds expire after three years. Here's what the enforcement timeline looks like and how to get back into compliance.
How to File a Federal Tax Extension: A Complete Guide
A step-by-step guide to filing a federal tax extension with Form 4868 or 7004 — including how to estimate what you owe, avoid failure-to-pay penalties, and meet the safe harbor threshold to prevent underpayment charges.
How to File Previous Year Taxes: A Complete Step-by-Step Guide
A practical step-by-step guide to filing late or unfiled tax returns — covering how to gather prior-year documents, use the correct IRS forms, handle outstanding balances, and request First-Time Abatement.
How to File a State Income Tax Extension: A Complete Guide
A state income tax extension is not automatic in most states—this guide covers which states require separate forms, how to estimate and pay taxes owed by the original deadline, and how to avoid late-filing penalties.
How to File Taxes Late: What to Do When You've Missed the Deadline
A step-by-step guide to filing a late federal tax return—what failure-to-file and failure-to-pay penalties actually cost, how to set up an IRS payment plan, and how to request First-Time Penalty Abatement to eliminate hundreds of dollars in penalties.
How to Pay Small Business Taxes: A Complete Guide
A practical guide to small business taxes covering income tax, self-employment tax (15.3%), payroll taxes, 2026 quarterly estimated payment deadlines, IRS payment methods, and strategies to reduce your tax burden.