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Solo1099
Guides

Tax topics for the self-employed

Each guide walks through a single tax concept the way an experienced friend would explain it. No jargon, real examples, and links back to the calculators when you want to plug in your own numbers.

Basics9 min read

How Self-Employment Tax Actually Works — A Plain-English Guide for 2026

Why freelancers pay 15.3% instead of 7.65%, how the half-SE deduction softens the blow, and a worked example you can follow line by line.

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Deductions12 min read

The Top 1099 Deductions Most Freelancers Miss (and What They Cost You)

A field guide to the dozen Schedule C line items the average freelancer underclaims — with the real-dollar tax impact at common income levels.

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Quarterly11 min read

Quarterly Estimated Taxes: The Complete 2026 Guide

When to pay, how much, the two safe harbors, the annualized income method, and how to send a payment without penalty.

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Schedule C13 min read

Schedule C Walkthrough: Line by Line for First-Time 1099 Filers

Every line of Schedule C, what it captures, common mistakes, and a worked example of a freelance designer with $80k revenue.

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Deductions10 min read

The Home Office Deduction: Simplified Method vs Actual Expense

The deduction with the worst PR — when you qualify, how to choose between methods, and the depreciation-recapture trap homeowners should know about.

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Deductions9 min read

The Mileage Deduction: Standard Rate vs Actual Expense Method

The 70¢/mile shortcut versus actual-expense math, the lock-in rule that traps first-year filers, and what counts as a business mile.

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Retirement11 min read

Solo 401(k) vs SEP IRA: Which Saves a Self-Employed Person More

Side-by-side at three income levels: why Solo 401(k) almost always wins, when SEP IRA still makes sense, and the Roth wrinkle worth $1,000+/year.

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Health8 min read

The Self-Employed Health Insurance Deduction (Schedule 1, Line 17)

A $7,000+/year deduction most freelancers under-claim. Who qualifies, what counts, and the ACA premium tax credit interaction headache.

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Entity11 min read

The S-Corp Election: When It is Worth Filing Form 2553

How the SE tax savings really work, the reasonable salary rule, the annual overhead, and a worked example showing $6k+/year in real savings.

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Quarterly8 min read

The IRS Underpayment Penalty: How It Works and How to Avoid It

The interest charge most freelancers do not realize they owe — how it is calculated, the safe harbors that prevent it, and how to fix a missed quarter.

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Industry11 min read

Taxes for Etsy, eBay, and Shopify Sellers in 2026

The 1099-K threshold, inventory and COGS, sales tax versus income tax, and the deductions specific to product sellers.

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Industry11 min read

Taxes for Uber, Lyft, and DoorDash Drivers in 2026

The mileage deduction that changes everything, the P1/P2/P3 rule, platform-fee deductions, and a real worked example for a full-time driver.

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