US Tax Tools

Self-Employment & 1099

Everything self-employed workers, freelancers, and 1099 contractors need to know about self-employment tax, quarterly payments, deductions, and business structure.

15 articles

Self-Employment

Self-Employment Tax Rate 2026: 15.3% Explained

The 2026 self-employment tax is 15.3% — 12.4% Social Security (capped at $184,500) plus 2.9% Medicare (uncapped). See the 92.35% rule and the half-SE-tax deduction.

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Self-Employment

§199A QBI Deduction 2026: 20% Pass-Through Deduction & the Specified Service Trade Phase-Out

How the §199A 20% qualified business income deduction works in 2026 — the taxable income thresholds, the SSTB (specified service trade) phase-out, and the W-2 wage/UBIA limit.

section-199a qbi qualified-business-income
Self-Employment

Schedule K-1 Explained: How Partners, S-Corp Shareholders & Trust Beneficiaries Are Taxed

Walkthrough of K-1 (Forms 1065, 1120-S, 1041) — the boxes that drive your 1040, what each line means, basis tracking, at-risk and PAL limits.

schedule-k-1 partnership s-corp
Self-Employment

Q2 Estimated Tax Due June 15 2026 — Safe Harbor, Form 1040-ES, and Penalties (IRS)

Complete guide to the Q2 2026 estimated tax payment due June 15: safe harbor rules (100%/110%/90%), Form 1040-ES vouchers vs EFTPS vs IRS Direct Pay, underpayment penalty math, and a worked freelancer example.

quarterly-tax estimated-payments self-employment
Self-Employment

Estimated Tax Underpayment Penalty: How It's Calculated and How to Avoid It

The IRS charges an underpayment penalty when you don't pay enough tax throughout the year. Learn exactly how the safe harbor rules work, 2025 quarterly due dates, and the annualized income method for uneven earners.

underpayment-penalty estimated-tax safe-harbor
Self-Employment

1099 Filing Deadlines and Penalties 2026

1099-NEC is due January 31, 2026. Learn all 1099 filing deadlines, late filing penalties ($60–$310 per form), intentional disregard penalties, and how to avoid IRS enforcement.

1099 self-employment deadlines
Self-Employment

LLC vs. S-Corp: Which Business Structure Saves More in Taxes?

Compare the tax implications of an LLC versus an S-Corp for self-employed individuals, including SE tax savings, reasonable salary requirements, and compliance costs.

self-employment 1099 business-structure
Self-Employment

Quarterly Estimated Tax Payments Explained

Who must pay estimated taxes, how the safe harbor rules work, how to avoid underpayment penalties, and the 2026 due dates for quarterly payments.

quarterly-tax estimated-tax self-employment
Self-Employment

Self-Employment Tax: How It Works

Understand the 15.3% self-employment tax, how to deduct half of it, what Schedule SE requires, and how it differs from W-2 FICA withholding.

self-employment fica schedule-c
Self-Employment

W-2 vs. 1099: Tax Differences Explained

Understand the key tax differences between W-2 employee income and 1099 independent contractor income — including self-employment tax, withholding, deductions, and benefits.

1099 self-employment freelance
Deductions

Home Office Deduction Guide: Who Qualifies and How to Calculate It

Learn who can claim the home office deduction, the difference between the simplified and regular methods, and what expenses qualify — including key rules for remote employees.

home-office deductions self-employment
Self-Employment

Side Hustle Tax Guide: How Gig Income Is Taxed in 2025

Learn how side income and gig work is taxed, including 1099-K reporting, estimated taxes, common deductions, and the hobby vs. business distinction.

side-hustle gig-economy self-employment
Self-Employment

1099 Freelancer Tax Guide: Everything You Need to Know for 2025

A complete guide to 1099 freelancer taxes in 2025: self-employment tax, quarterly payments, top deductions, and exactly how much to set aside so you never get blindsided at tax time.

1099 freelance self-employment
Self-Employment

Self-Employment Tax Guide: What Freelancers and 1099 Workers Need to Know

A complete guide to self-employment tax for freelancers and independent contractors, including the 15.3% SE tax rate, deductions, and quarterly estimated payment due dates.

self-employment 1099 freelance
Self-Employment

Quarterly Estimated Tax Payments: Who Needs to Pay and How to Calculate

Learn who must make quarterly estimated tax payments, the 2026 due dates, how to calculate your payments, the safe harbor rule, and how to avoid underpayment penalties.

quarterly-tax estimated-payments self-employment

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Last updated June 24, 2026 Tax year 2025-26

Data sources: IRS (irs.gov), Social Security Administration

This tool is general information only, not financial advice.

Reviewed by USTax Tools Editorial Desk

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