Guides
Money explained in plain English.
Short, practical guides to the everyday money questions — what your payment really covers, how interest stacks up, and how to decide. Each one is backed by a free calculator.
APR vs Interest Rate: What's the Real Cost of a Loan?
The interest rate sets your payment; the APR reveals the true cost. Learn why they differ and how to compare loans fairly.
Read guideHow to Work Out a Car Payment Before You Buy
The sticker price isn't the payment. See how trade-in, tax and fees roll into the loan and what it really costs each month.
Read guideHow a Certificate of Deposit Pays Out
A CD trades access for a guaranteed return. See how APY drives the payout and when locking up your money is worth it.
Read guideHow Compound Interest Grows Your Savings
Compound interest is interest earning its own interest. See why starting early beats saving more, and how to model your own growth.
Read guideHow Long Will It Take to Pay Off Your Credit Card?
Paying the minimum can keep a card alive for a decade. See what your balance really costs and how a fixed payment clears it.
Read guideSnowball vs Avalanche: The Fastest Way Out of Debt
Two strategies, one goal. Learn how snowball and avalanche differ, and which clears your debts faster — or keeps you motivated.
Read guideHow to Calculate a Discount and Stacked Sale Prices
Find the real sale price fast — and learn why 25% off then 10% off isn't 35% off, but something a little less.
Read guideHow Much Should You Put Down on a House?
Why 20% down matters, what PMI costs you, and how to decide between a bigger down payment and keeping cash in reserve.
Read guideHow to Estimate Your Federal Income Tax
Tax brackets confuse almost everyone. Learn how marginal rates really work and why a raise never lowers your take-home pay.
Read guideHow Inflation Eats Away at Your Money
Inflation works in two directions: prices climb and cash loses value. See what that does to your money over a decade or two.
Read guideHow to Measure Your Real Investment Return
A 100% gain sounds great — but over how long? Learn why CAGR is the honest way to compare investment returns.
Read guideHow Loan Payments and Interest Actually Work
Understand what sets your monthly loan payment, and why a longer term lowers the payment but raises the total you pay.
Read guideHow to Calculate Your Monthly Mortgage Payment
Break a mortgage payment into its real parts — principal, interest, taxes and insurance — and see why early payments are mostly interest.
Read guideHow to Calculate Percentages (Three Common Ways)
Three percentage questions cover almost everything: a share of a number, a ratio, and a change. Learn the quick method for each.
Read guideWhen Does Refinancing a Mortgage Actually Pay Off?
A lower payment isn't always a better deal. Learn the break-even point and how to tell a real refinance win from a costly one.
Read guideHow to Estimate What You'll Have at Retirement
Turn your current savings and monthly contributions into a retirement projection, and see what income it could realistically support.
Read guideHow to Convert Hourly Pay to Annual Salary
Convert between hourly, weekly, monthly and annual pay — and know why gross figures aren't what lands in your account.
Read guideHow to Add or Remove Sales Tax from a Price
Add tax to a price, or pull the tax back out of a total. Two quick calculations that come up more often than you'd think.
Read guideHow to Hit a Savings Goal by a Set Date
Have a number and a deadline? Work backwards to the monthly amount you need to save, with interest doing part of the work.
Read guideHow to Calculate a Tip and Split the Bill
How much to tip, how to do it in your head, and how to split the total fairly across the table — without the awkward math.
Read guideSkip the reading — just run the numbers
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