Money guides
Plain-English help to use the calculators well.
How to Make a Budget in 5 Simple Steps
A beginner-friendly guide to building a monthly budget that you can actually stick to.
Read guide →How Loan Interest Really Works
Understand APR, amortization and why early payments are mostly interest, with tips to pay less.
Read guide →Compound Interest Explained (and Why Starting Early Wins)
How compound interest works, the rule of 72, and a simple example showing why time matters most.
Read guide →How to Fix Bad Financial Condition with Math: A 7-Step Recovery Plan
A step-by-step plan, with real numbers, to climb out of a money hole: find the gap, cut and earn, pay debt smartly and build a safety net.
Read guide →Snowball vs Avalanche: The Math of Getting Out of Debt
Compare the two best debt payoff methods with real numbers and learn which one saves more money.
Read guide →How to Save Money: 10 Practical Ways with Real Numbers
Ten proven ways to save money, each with the math showing how much you can keep every year.
Read guide →Investing for Beginners: A Simple Plan with the Numbers
A plain-English starter plan for investing: low-cost index funds, regular contributions and why fees matter.
Read guide →Side Hustle Math: How Much Can You Really Earn?
Honest numbers for common money-making ideas: selling products, YouTube, freelancing and overtime, with break-even math.
Read guide →Buying a Home or Car: The Math Before You Sign
How to work out what you can really afford for a home or car, using simple rules and real numbers.
Read guide →How Income Tax Brackets Really Work
Marginal vs effective tax rate explained with a worked example, and why a raise never leaves you with less take-home pay.
Read guide →Capital Gains Tax Explained: Short vs Long Term
How selling an investment is taxed, why holding for over a year can cut the rate, and how to estimate the bill before you sell.
Read guide →Self-Employed Taxes Made Simple
How self-employment tax works, why you set money aside from every payment, and how to estimate your yearly bill.
Read guide →When to Claim Social Security: 62, 67 or 70?
How claiming age changes your monthly check, what the break-even age means, and how to compare options with your own numbers.
Read guide →Required Minimum Distributions (RMDs) Explained
What an RMD is, when it starts, how it is calculated and how to plan for it before it forces extra taxable income.
Read guide →Pay Off Debt or Invest? A Simple Way to Decide
Compare your debt interest rate with realistic after-tax investment returns to decide where extra money should go first.
Read guide →Extra Mortgage Payments: How Much Do They Save?
See how paying a little extra each month cuts years and tens of thousands in interest, and how to read an amortization schedule.
Read guide →The True Cost of Owning a Car
Depreciation, insurance, fuel, repairs and loan interest add up fast. Learn how to find your real cost per month and per mile.
Read guide →Lump Sum vs Dollar-Cost Averaging
Should you invest a windfall all at once or spread it out? What the history and simulations show, and how to choose.
Read guide →Will My Retirement Money Last? Understanding the Odds
Why a fixed 4% rule is only a starting point, what sequence-of-returns risk is, and how simulations show the chance of success.
Read guide →Real Return: What Fees, Tax and Inflation Take
Why a 7% headline return can feel much smaller, and how to measure growth in today's money after costs.
Read guide →Emergency Funds and Rent vs Buy: Two Big Early Decisions
How many months of cash to hold, and how to compare renting with buying using total cost rather than gut feeling.
Read guide →How Much House Can I Afford? The 28/36 Rule
A simple rule lenders use to size a mortgage, with a worked example, plus the costs people forget when they set a budget.
Read guide →Credit Card Interest Explained (and How to Beat It)
How APR turns into monthly interest, why minimum payments keep you in debt, and when a balance transfer helps.
Read guide →401(k) vs Roth IRA: Which Should You Use First?
How employer match, tax treatment and flexibility compare, and a simple order for filling retirement accounts.
Read guide →The Rule of 72: How Fast Will Your Money Double?
A one-line mental shortcut for doubling time, with examples, and how it relates to CAGR and compound interest.
Read guide →Salary Raises and Job Offers: Do the Math
Why a few thousand dollars of extra starting pay is worth far more over time, and how to compare two job offers fairly.
Read guide →How to Price Freelance Work (Without Undercharging)
Work backwards from the income you want, add tax and costs, and divide by realistic billable hours to find your rate.
Read guide →What Is Net Worth and How Do You Grow It?
Assets minus debts is the one number that shows your progress. Learn how to calculate it and the levers that raise it.
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