Tax Filing Resources
Free guides, deadline calendars, and penalty breakdowns to keep your small business compliant year-round.
LLC Tax Filing Deadlines for 2026: Complete Guide
Every deadline LLC owners need to know — Schedule C, quarterly estimates, 1099-NEC, and how S-Corp elections change everything.
S-Corp Tax Deadlines: What to File and When
Form 1120-S, K-1 distribution, payroll filings, and the reasonable salary requirement every S-Corp owner must understand.
IRS Late Filing Penalties: What They Actually Cost
Failure-to-file vs. failure-to-pay, combined penalty rules, minimum penalties, and form-specific fines broken down clearly.
Quarterly Estimated Tax Payments: Who Owes, When, and How Much
1040-ES for individuals, 1120-W for corporations, safe harbor rules, due dates, and how to avoid underpayment penalties.
C Corporation Tax Deadlines: Complete Filing Calendar
Form 1120, quarterly estimated payments, payroll filings, W-2s, 1099-DIV, and every deadline C-Corps face in 2026.
How to File a Tax Extension (and Why You Still Owe)
Extensions give you more time to file — not more time to pay. Learn how Form 4868 and 7004 work.
Payroll Tax Deadlines: 941, 940, and W-2 Filing Guide
Quarterly 941 filings, annual 940, W-2 distribution, and deposit schedules every employer needs to track.
Texas Franchise Tax: Filing Requirements and Deadlines
No-tax-due thresholds, EZ computation rate, filing deadlines, and how Texas franchise tax applies to your entity type.
W-2 vs 1099: Deadlines and How to Classify Workers
IRS behavioral, financial, and relationship tests, misclassification penalties, and how to stay on the right side of the law.
State Tax Deadlines for No-Income-Tax States
Franchise taxes, gross receipts taxes, and annual report deadlines for states with no traditional income tax.
Form 1120-S Filing Guide for S-Corps
Step-by-step guide to filing Form 1120-S, K-1 schedules, and key deadlines every S-Corp needs to know.
Form 941 Guide: Quarterly Payroll Tax Filing
How to complete Form 941, quarterly due dates, deposit schedules, and common mistakes to avoid.
Common Small Business Tax Mistakes to Avoid
The most frequent filing errors, missed deductions, and compliance oversights that cost small business owners money.
Self-Employment Tax Guide for Sole Proprietors
How SE tax works, calculating your liability, deducting half on your 1040, and quarterly payment requirements.
California LLC Tax Requirements
Annual franchise tax, LLC fee based on income, filing deadlines, and compliance requirements for California LLCs.
Florida Business Tax Guide
Corporate income tax, sales tax obligations, reemployment tax, and annual report filing for Florida businesses.
New York LLC Filing Requirements
Publication requirement, annual filings, PTET election, and tax obligations for New York LLCs.
Partnership Tax Filing Guide
Form 1065, Schedule K-1, self-employment tax for partners, and key deadlines for partnership returns.
Sales Tax Filing Guide for Small Businesses
Nexus rules, registration, filing frequency, economic nexus thresholds, and multi-state compliance.
Annual Report Filing Requirements by State
Due dates, fees, and filing procedures for annual reports and statements of information across all 50 states.
Never Miss a Tax Deadline
BizTaxIntel tracks every federal and state deadline for your entity type. Smart reminders, filing confirmation, all 50 states.
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