Guide library
Simple guides for everyday money questions.
Start with a plain-English explanation, then use the related calculator to run your own numbers.
BudgetingHow to build a simple monthly budget that you can actually use
BudgetingHow to budget for annual bills and irregular expenses
BudgetingHow to cut monthly expenses without feeling miserable
Tax refundWhat to do with a tax refund
Savings and budgetingSinking fund vs emergency fund: what is the difference?
Housing budgetHow much rent can I afford?
Savings and debtEmergency fund or pay off debt: what should come first?
Emergency savingsHow much emergency fund do you really need?
Debt payoffDebt snowball vs. debt avalanche: which pays off debt faster?
Debt payoffDebt consolidation loan vs credit card payoff
Borrowing basicsWhat is a good debt-to-income ratio?
Credit cardsHow credit card interest works with real examples
Credit cardsCredit card minimum payment trap: why it costs so much
TrackingWhat is net worth and how do you calculate it?
Retirement2026 401(k) contribution limits in plain English
RetirementRoth IRA vs Traditional IRA in plain English
HousingRent vs buy a home: what should you compare?
Homebuying and debtShould you pay off debt before buying a house?
Mortgage calculatorHow to use an extra payment mortgage calculator
Mortgage payoffWhat happens when you pay extra on your mortgage?
Mortgage payoffPay off mortgage early vs invest: how to compare
Health benefitsHSA vs FSA: which one should you use?
Auto loansBest car loan down payment and term: 48, 60, 72 or 84 months?
Auto loan payoffAuto loan prepayment penalty: is there a fee to pay off early?
Auto debtIs it bad to pay off a car loan early?
Student debtHow to choose a student loan repayment strategy
RetirementHow much should you save for retirement?
Retirement incomeHow to withdraw money in retirement
InvestingTaxable account investing basics
Social SecurityWhen can I claim Social Security?
Social SecurityWorking while collecting: the 2026 earnings test
InflationInflation, COLA, and purchasing power
Retirement healthcareHow to budget for healthcare costs in retirement
Long-term careLong-term care planning in retirement
Run your numbers
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Once a concept clicks, plug in your own numbers with the calculator library.