US Financial Guides
Plain-English guides to the financial concepts behind our calculators. Understand how US taxes work, how to calculate your take-home pay, what drives mortgage payments, and strategies to eliminate debt faster.
All Guides
In-depth, jargon-free financial education for Americans.
How to Calculate Salary After Tax in the US (2026)
A step-by-step guide to understanding how US federal and state income taxes, Social Security, and Medicare reduce your gross salary to your actual take-home pay — with worked examples for 2026.
Gross vs. Net Pay: What's the Difference and Why It Matters
Confused about gross pay vs. net pay? This guide explains every deduction that comes out of your paycheck, why they exist, and how to use your net pay to build an accurate budget.
Understanding US Federal Tax Brackets (2026)
A plain-English explanation of how the US progressive tax system works, what your marginal and effective rates mean, and how to calculate your exact federal income tax bill using 2026 brackets.
How to Read Your Pay Stub (Every Line Explained)
Your pay stub contains important financial information, but the codes and abbreviations can be confusing. This guide explains every line you might see on a US pay stub, what it means, and how to verify the numbers are correct.
How to Pay Off Debt Faster: Strategies That Actually Work
High-interest debt is one of the biggest obstacles to financial freedom. This guide covers the most effective debt payoff strategies, explains the math behind them, and gives you a step-by-step plan to become debt-free faster.
How to Calculate Your Mortgage Payment (2026 Guide)
A plain-English breakdown of how mortgage payments are calculated — principal, interest, taxes, and insurance — with worked examples using 2026 rates and a step-by-step formula you can follow.
What Is FICA Tax? Social Security & Medicare Explained (2026)
FICA taxes fund Social Security and Medicare and are deducted automatically from every paycheck. This guide explains exactly how much you pay, why there's a wage base cap, and what you get in return.
How to Build a Monthly Budget That Actually Works (2026)
A practical, step-by-step guide to creating a monthly budget using the 50/30/20 rule — covering how to calculate your after-tax income, categorize expenses, and find money to save or pay off debt.
Capital Gains Tax Explained: Short-Term vs Long-Term (2026)
When you sell stocks, real estate, or other assets for a profit, capital gains tax applies. This guide explains the difference between short-term and long-term rates, the 2026 thresholds, and strategies to legally minimize what you owe.
Hourly to Salary: How to Convert and Compare Pay (2026)
Whether you're evaluating a job offer, negotiating a raise, or comparing hourly and salaried positions, this guide explains exactly how to convert between hourly and annual pay — and what to watch out for.
Why read these guides?
Calculators give you numbers — guides help you understand what those numbers mean and what to do with them. Whether you're negotiating a salary, evaluating a mortgage offer, or trying to get out of credit card debt, understanding the underlying concepts makes you a more informed financial decision-maker.