SelfEmploymentTaxEstimator.com

Tax Guides & Resources

Plain-language guides on self-employment taxes, quarterly payments, deductions, and more.

Guide New · Series: Freelance Finance

The Freelancer's Guide to Business Deductions

The write-offs freelancers miss most: phone, software, home office, mileage and more. A 12-item checklist plus worked numbers showing each dollar deducted saves about 35 cents in combined federal tax.

Published June 7, 2026
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Guide New

Shipt Shopper Taxes: 1099 Income Explained

How Shipt reports your earnings on a 1099-NEC, how to claim the mileage deduction, a full SE tax worked example at $42,000, and how to calculate quarterly payments on variable delivery income.

Published June 3, 2026
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Guide · Series: Freelance Finance

Invoicing Best Practices That Also Help at Tax Time

Sequential numbering systems, net terms, late fee language and the eight fields every invoice needs to make your Schedule C self-proving at year-end.

Published May 31, 2026
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Guide

Rover and Pet Sitter Taxes: A Simple Guide for 2026

How Rover classifies sitters, what the 1099-NEC shows versus what lands in your account, deductible supplies and mileage, and how to handle quarterly payments as your bookings grow.

Published May 27, 2026
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Guide · Series: Freelance Finance

Separating Business and Personal Finances: 7 Mistakes That Cost Freelancers at Tax Time

The seven commingling mistakes that quietly lose freelancers deductions, hours, and audit defense, plus a one-afternoon checklist to set up a business checking account, business credit card, and weekly bookkeeping habit.

Published May 24, 2026
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Guide · Series: Freelance Finance

Setting Up a Solo 401(k): A Step-by-Step Guide for Freelancers

How to actually open a Solo 401(k) in 2026: the six steps, where to do it (Fidelity and Schwab are the main options; Vanguard stopped new applications in 2023), key deadlines, and what to do once the account is open.

Published May 17, 2026
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Guide · Series: Freelance Finance

S-Corp Tax Advantages: The SE Tax Math Explained

How an S-Corp election reduces self-employment tax by splitting income into salary and distributions. Real numbers at $120k, $150k, and $200k, plus the overhead costs that determine whether it actually saves you money.

Published May 16, 2026
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Guide · Series: Freelance Finance

When to Elect S-Corp Status: A Self-Employed Person's Decision Guide

Income thresholds, consistency requirements, state-level fees, Form 2553 timing, and the key signals that tell you when the S-Corp switch makes financial sense, and when to wait another year.

Published May 15, 2026
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Guide

Upwork Freelancer Taxes: What the Platform Doesn't Tell You

Complete 2026 tax guide for Upwork freelancers: how the 1099-K reconciles with the platform fee, a full worked example on $68k gross revenue, what remote freelancers can deduct, and 6 things Upwork never tells you about taxes.

Published May 13, 2026
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Guide · Series: Freelance Finance

How a Solo 401(k) Lowers Your Tax Bill (With Real Numbers)

A before-and-after comparison: on $120,000 of net SE income, maxing a Solo 401(k) shelters $51,381 and saves nearly $11,000 in federal income taxes. Real math, multiple income levels, and what the plan doesn't change.

Published May 10, 2026
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Guide

Fiverr Seller Taxes: How to Handle 1099-K Income

Complete tax guide for Fiverr sellers: how the 1099-K works, a full worked example on $55k gross revenue, what platform fees and software costs you can deduct, quarterly payment rules, and 5 costly mistakes to avoid.

Published May 6, 2026
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Guide · Series: Freelance Finance

Solo 401(k) Deep Dive: How Employee and Employer Contributions Work Together

The two-bucket system explained: employee elective deferrals ($23,500), employer profit-sharing (up to 25% of net SE income), a full worked example on $95k net income, and the deadline rules that trip people up every year.

Published May 3, 2026
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Guide

Airbnb Host Taxes: What You Owe and How to Reduce It

A complete 2026 guide for Airbnb hosts: the 14-day rule, Schedule C vs E, depreciation, and a case study following a host who earns $24,000 renting a spare bedroom, with the full tax breakdown.

Published April 29, 2026
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Guide · Series: Freelance Finance

The Self-Employed 401(k): The Most Powerful Retirement Account You Probably Aren't Using

2026 deep dive on the Solo 401(k): why it beats a SEP-IRA, the two-bucket structure, $70,000 contribution cap, a worked example on $90k net SE income, and the December 31 deadline that catches new freelancers.

Published April 26, 2026
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Guide

Instacart Shopper Taxes: What Every Batcher Needs to Know

Complete tax guide for Instacart shoppers: full-service vs. in-store classification, mileage deductions, worked example on $30k gross income, and 5 tax mistakes to avoid.

Published April 22, 2026
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Guide · Series: Freelance Finance

You Filed (or Extended). Now What? Setting Up for Q2

Post-tax-season reset: review what you owed, set your Q2 payment target with worked examples, organize your records, review your rate, and avoid 5 common post-filing mistakes.

Published April 19, 2026
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Guide · Series: Freelance Finance

Tax Week Checklist: What to Do Before April 15

Three tasks, three days: pay your Q1 2026 estimated taxes, file or extend your 2025 return, and consider a last-minute SEP-IRA contribution. A step-by-step action guide with worked examples.

Published April 12, 2026
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Guide

Lyft Driver Taxes: 1099s, Mileage, and Quarterly Payments

Lyft-specific tax guide covering income reporting, deductible expenses (mileage, phone, car costs), quarterly estimated payments, and how to avoid underpayment penalties.

Published April 8, 2026
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Guide · Series: Freelance Finance

Last-Minute Tax Deductions You Might Be Missing

Home office, health insurance premiums, professional subscriptions, and the SE tax deduction itself. Make sure you are not leaving money on the table before April 15.

Published April 5, 2026
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Guide

DoorDash Taxes: The Complete Dasher Tax Guide

How DoorDash reports your income, what Dashers can deduct (mileage, hot bags, phone), how to calculate quarterly payments, and how to avoid an April tax surprise.

Published April 1, 2026
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Guide · Series: Freelance Finance

Tax Extension 101: Should You File for an Extension?

April 15 is two weeks away. Learn what a tax extension actually does, when it makes sense for freelancers, and the critical difference between filing late and paying late.

Published March 29, 2026
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Guide

Uber Driver Taxes: What You Owe and How to Reduce It

Complete tax guide for Uber drivers: 1099-K and 1099-NEC income, mileage deduction (standard vs. actual), quarterly payments, and key deductions.

Published March 25, 2026
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Guide · Series: Freelance Finance

How to Calculate Your Quarterly Estimated Tax Payment

Step-by-step formulas for calculating your Q1 payment before April 15. Covers the safe harbor rules, a worked example, and how to handle combined W-2 and 1099 income.

Published March 22, 2026
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Guide · Series: Freelance Finance

Quarterly Estimated Taxes: How They Work (and Why You'll Get Penalized If You Skip)

Q1 is due April 15. Learn how the quarterly system works, what triggers the underpayment penalty, and how the safe harbor rules protect you.

Published March 15, 2026
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Guide · Series: Freelance Finance

The Freelance Finance Mindset: Why Freelancers Need to Think Differently About Money

No employer safety net, no automatic withholding, and no one setting aside taxes on your behalf. How to reframe your relationship with money as a self-employed worker.

Updated March 2026
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Guide

Why Quarterly Estimated Taxes Matter: How to Calculate Yours

Who needs to pay quarterly, how underpayment penalties work, and how to use the SE tax calculator as an ongoing planning tool throughout the year.

Updated March 2026
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