Tax Guides
Plain-English explanations of how U.S. taxes really work — more than twenty in-depth guides plus a full glossary, every figure checked against official IRS publications and updated for tax years 2025 and 2026. Written by the QuickTaxTools Editorial Team to our editorial standards.
Tax Basics
How Tax Brackets Actually Work
Marginal vs. effective rates — why a raise never lowers your take-home pay.
Read guide →2026 Tax Brackets & Rates
Every 2026 bracket, standard deduction, and threshold from IRS Rev. Proc. 2025-32.
Read guide →Standard Deduction vs. Itemizing
2025 and 2026 amounts and the break-even math for itemizing.
Read guide →Filing Status Explained
Single, MFJ, MFS, and Head of Household — which saves the most.
Read guide →2026 Tax Deductions
Standard, above-the-line, and itemized deductions explained.
Read guide →2026 Tax Credits List
Child Tax Credit, EITC, education, child-care, and more — who qualifies.
Read guide →Paychecks & Withholding
Self-Employment & Gig Work
Self-Employment Tax Guide
SE tax, the QBI deduction, deductions, and quarterly estimates for freelancers.
Read guide →Gig & Side Hustle Taxes
Uber, DoorDash, Etsy: 1099-K, self-employment tax, and deductions.
Read guide →Estimated Taxes & Penalties
Safe-harbor rules and how to avoid the underpayment penalty.
Read guide →Business Vehicle Deduction
Standard mileage (72.5¢ for 2026) vs. actual expenses — which wins.
Read guide →Filing, Refunds & IRS Help
Tax Prep Checklist
Every document you need to gather before you file.
Read guide →Where's My Refund?
Track your IRS refund, the 21-day timeline, and the PATH Act delay.
Read guide →How to File an Extension
Form 4868, the October 15 deadline, and why it doesn't delay payment.
Read guide →Can't Pay Your Taxes?
IRS payment plans, Offer in Compromise, and penalty relief options.
Read guide →Investing, Retirement & Family
Capital Gains Tax Guide
Stocks, crypto, and home sales — rates, holding periods, and the home-sale exclusion.
Read guide →401(k) vs. Roth vs. Traditional IRA
Which retirement account saves you the most tax, and how to split contributions.
Read guide →Is Social Security Taxable?
The combined-income formula and the 50%/85% thresholds for 2026.
Read guide →Child Tax Credit 2026
Who qualifies, how much is refundable, and where it phases out.
Read guide →New 2025–2028 Tax Deductions
Tips, overtime, car-loan interest, and the senior deduction under the OBBBA.
Read guide →