Guides

Financial guides that connect to working calculators

Read practical financial guides that explain paycheck, mortgage, debt, loan, investment, and retirement calculator concepts, with links back to the tools.

Paycheck guides

5 guides

Paycheck guide

How to calculate take-home pay

A practical guide to estimating take-home pay from gross pay, federal withholding, FICA, deductions, state taxes, and pay frequency.

Paycheck guide

Gross pay vs net pay

Understand the difference between gross pay and net pay, why paycheck deductions matter, and how to estimate the amount deposited.

Paycheck guide

Salary vs hourly paycheck

Compare salary and hourly paycheck estimates, including pay frequency, overtime, hours, gross pay, and take-home pay differences.

Mortgage guides

5 guides

Mortgage guide

How mortgage payments work

Learn how principal, interest, loan term, rate, taxes, insurance, and PMI shape a mortgage payment estimate.

Mortgage guide

Mortgage amortization explained

Understand how an amortization schedule splits each mortgage payment between interest, principal, and remaining balance.

Mortgage guide

Mortgage taxes, insurance and PMI

Learn how property tax, homeowners insurance, mortgage insurance, HOA dues, and other housing costs fit beside a mortgage payment.

Mortgage guide

Closing costs explained

Understand how closing costs, upfront fees, points, and cash needed at closing affect a home purchase or refinance estimate.

Debt payoff guides

4 guides

Debt guide

Fixed payment vs minimum payment

Compare fixed credit card payments with minimum payments and see why payment structure changes payoff time and interest.

Loan guides

4 guides

Loan guide

APR vs interest rate

Learn the difference between interest rate and APR, and why fees can make APR higher than the stated rate.

Loan guide

Personal loan payment factors

Learn how loan amount, origination fee, annual rate, and term affect personal loan payment and total cost.

Loan guide

Auto loan total cost

Understand how vehicle price, down payment, trade-in, sales tax, fees, rate, and term affect auto loan cost.

Investing and retirement guides

4 guides

Planning guide

Compound interest explained

Learn how starting balance, contributions, return, compounding frequency, and time shape future value.

Planning guide

Investment return with contributions

Understand how recurring contributions, contribution timing, fees, tax, inflation, and return assumptions affect investment projections.

Planning guide

Retirement savings target

Learn how current age, retirement age, savings, contributions, return, inflation, and spending assumptions affect retirement estimates.

Planning guide

Inflation and real returns

Understand the difference between nominal ending value and real purchasing power in investment and retirement estimates.

Paycheck tools

Mortgage and debt tools

Growth and planning tools