Glossary
Financial glossary
Plain-English definitions of the money terms you actually run into — each one written to answer the question directly, then link you to the calculator that puts it to work.
A
- Adjustable-Rate Mortgage (ARM)An adjustable-rate mortgage has an interest rate that's fixed for an initial period — often 5, 7, or 10 years — then adjusts periodically with the market. It usually starts lower than a fixed-rate loan, trading a cheaper early payment for uncertainty later.
- Adjusted Gross Income (AGI)Adjusted gross income is your total income minus specific 'above-the-line' adjustments like traditional IRA contributions, student-loan interest, and HSA deposits. It's a key figure on your tax return because many deductions, credits, and eligibility limits are based on it.
- AmortizationAmortization is the process of paying off a loan with equal payments split between interest and principal. Early payments are mostly interest because the balance is high; as the balance shrinks, more of each payment goes to principal — so you build equity slowly at first, then faster near the end.
- AnnuityAn annuity is a contract with an insurer that turns a lump sum into a stream of income, often for life. Its appeal is guaranteed income you can't outlive; its drawbacks are fees, complexity, and giving up access to the money, so the details matter enormously.
- APR (Annual Percentage Rate)APR is the yearly cost of borrowing money, expressed as a percentage that includes both the interest rate and mandatory fees like origination charges. Because it bundles fees in, APR is the number to compare across loan offers — a lower APR means a cheaper loan overall.
- APY (Annual Percentage Yield)APY is the real rate of return on savings over a year, including the effect of compound interest. Because it accounts for interest earning interest, APY is always equal to or higher than the stated interest rate, and it is the number to compare when shopping for savings accounts or CDs.
- Asset AllocationAsset allocation is how you divide your portfolio among stocks, bonds, and cash. It's the single biggest driver of your long-term risk and return — far more than picking individual investments — because each asset class behaves differently in good and bad markets.
- Assets vs. LiabilitiesAn asset is anything you own that has value — cash, investments, a home, a car. A liability is anything you owe — a mortgage, student loans, a credit-card balance. Subtract liabilities from assets and you get your net worth, the bottom line of your finances.
B
- Backdoor Roth IRAA backdoor Roth is a legal workaround that lets high earners fund a Roth IRA despite the income limits. You contribute to a non-deductible traditional IRA, then convert it to a Roth — since anyone can convert, the income cap on direct Roth contributions no longer blocks you.
- Balance TransferA balance transfer moves debt from a high-interest credit card to a new card offering a low or 0% promotional rate, usually for 12–21 months. Done right, every dollar you pay during the promo goes to principal instead of interest — a powerful way to escape a debt spiral.
- BeneficiaryA beneficiary is the person or entity you name to receive an account or policy when you die — on retirement accounts, life insurance, and bank accounts. A named beneficiary passes directly to that person, bypassing probate and even overriding your will.
- BondA bond is a loan you make to a government or company in exchange for regular interest payments and the return of your principal at a set maturity date. Bonds are generally less volatile than stocks, which is why they anchor the 'safer' side of a diversified portfolio.
- Brokerage AccountA brokerage account is a taxable investment account you use to buy stocks, bonds, ETFs, and funds. Unlike a 401(k) or IRA, it has no contribution limits and no early-withdrawal penalties — you can access the money anytime — but you owe tax on dividends and gains.
- Bull vs. Bear MarketA bull market is a sustained rise in prices; a bear market is a drop of 20% or more from recent highs. The terms capture market mood — optimism versus fear — and both are a normal part of investing that long-term investors ride through rather than try to time.
C
- CAGR (Compound Annual Growth Rate)CAGR is the single steady yearly rate that would grow an investment from its start value to its end value over a period. It smooths out the ups and downs into one number, which is why it's the fairest way to compare investments held for different lengths of time.
- Capital Gains TaxCapital gains tax is what you owe on the profit when you sell an investment for more than you paid. Assets held over a year get preferential long-term rates (0%, 15%, or 20% depending on income); assets held a year or less are taxed as ordinary income, which is usually higher.
- Capital LossA capital loss is what you have when you sell an investment for less than you paid. It isn't only bad news: losses offset capital gains dollar-for-dollar, and up to $3,000 of net loss can offset ordinary income each year, with the rest carried forward to future years.
- Cash AdvanceA cash advance is borrowing cash against your credit card, usually at an ATM. It's one of the most expensive ways to borrow: a separate, higher APR, an upfront fee, and no grace period — interest starts accruing the moment you take the money.
- Cash FlowCash flow is the money coming in versus going out over a period. Positive cash flow — income exceeding expenses — is what funds saving, investing, and debt payoff; negative cash flow means you're drawing down savings or adding debt to cover the gap.
- Certificate of Deposit (CD)A CD is a savings product that locks your money for a fixed term — from a few months to five years — in exchange for a guaranteed, usually higher, interest rate. Withdraw early and you forfeit some interest, so CDs suit money you won't need until a known date.
- Closing CostsClosing costs are the one-time fees you pay to finalize a home purchase or refinance — typically 2% to 5% of the loan amount — on top of your down payment. They include lender fees, appraisal, title insurance, taxes, and escrow setup, and they're due at the closing table.
- Compound InterestCompound interest is interest calculated on both your original principal and the interest already earned. Because each period's earnings are added to the balance, the next period earns interest on a larger amount — so growth accelerates over time instead of staying flat, which is what makes long-term saving so powerful.
- CosignerA cosigner is someone who signs a loan alongside the borrower and becomes equally responsible for repaying it. Lenders accept a cosigner with strong credit to approve a borrower who couldn't qualify alone — common on student and first-time auto loans.
- Cost BasisCost basis is what you originally paid for an investment, including fees and reinvested dividends. It's the number the IRS subtracts from your sale price to calculate your taxable capital gain (or loss) — so tracking it accurately can save real money at tax time.
- Credit LimitA credit limit is the maximum balance a lender lets you carry on a credit card or line of credit. It affects your credit score through utilization — the share of your limit you're using — so a higher limit with the same spending can actually help your score.
- Credit ReportA credit report is a detailed record of your borrowing — accounts, balances, payment history, and inquiries — kept by the three major bureaus (Equifax, Experian, TransUnion). It's the raw data your credit score is built from, and lenders pull it to decide whether to approve you.
- Credit ScoreA credit score is a three-digit number (usually 300–850) that predicts how likely you are to repay borrowed money. Lenders use it to decide whether to approve you and what rate to charge — a higher score can save tens of thousands in interest over a mortgage or auto loan.
- Credit UtilizationCredit utilization is the percentage of your available credit that you're currently using — your card balances divided by your credit limits. It makes up about 30% of a FICO score, and keeping it below 30% (ideally under 10%) is one of the fastest ways to improve your credit.
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- Debt ConsolidationDebt consolidation combines several debts into one new loan or balance-transfer card, ideally at a lower rate. It simplifies multiple payments into one and can cut interest — but it only helps if you avoid running the old balances back up.
- Debt-to-Income Ratio (DTI)Debt-to-income ratio is the share of your gross monthly income that goes toward debt payments. Lenders use it to judge how much more you can borrow: most want your total debt payments below 36% of income, and your housing payment alone below 28% — the classic 28/36 rule.
- Discount PointsDiscount points are upfront fees you pay a lender to lower your mortgage interest rate — one point costs 1% of the loan and typically cuts the rate by about 0.25%. Buying points makes sense only if you'll keep the loan long enough for the monthly savings to recover the upfront cost.
- DiversificationDiversification means spreading your money across many investments so no single one can sink you — the financial version of not putting all your eggs in one basket. It's the one 'free lunch' in investing: it lowers risk without necessarily lowering expected return.
- DividendA dividend is a share of a company's profits paid out to shareholders, usually every quarter. It's one of two ways stocks make money — the other is price appreciation — and reinvesting dividends instead of spending them is a major driver of long-run compounding.
- Dollar-Cost AveragingDollar-cost averaging is investing a fixed amount on a regular schedule regardless of price. You automatically buy more shares when prices are low and fewer when they're high, and — more importantly — you remove the timing decisions that most investors get wrong.
- Down PaymentA down payment is the share of a home's price you pay upfront in cash, with the mortgage covering the rest. Putting down 20% lets you avoid private mortgage insurance and shrinks the loan, but it isn't required — conventional loans go as low as 3%, FHA 3.5%, and VA or USDA loans can reach 0% for those who qualify.
E
- Emergency FundAn emergency fund is cash set aside to cover unexpected, necessary expenses — a job loss, medical bill, or major repair — without borrowing. The standard target is three to six months of essential expenses, kept in a safe, instantly accessible account like a high-yield savings account.
- EscrowAn escrow account is a holding account your mortgage servicer uses to collect and pay your property taxes and homeowners insurance on your behalf. A portion of each monthly payment goes into escrow, so large annual tax and insurance bills are spread evenly across the year instead of hitting all at once.
- ETF (Exchange-Traded Fund)An ETF is a basket of investments — often an entire index like the S&P 500 — that trades on an exchange like a single stock. It gives you instant diversification at a very low cost, and unlike a mutual fund you can buy or sell it anytime the market is open.
- Expense RatioAn expense ratio is the annual fee a mutual fund or ETF charges, shown as a percentage of your invested money. A 0.05% ratio costs $5 a year per $10,000; a 1% ratio costs $100. It's deducted automatically, so it's easy to ignore — and over decades even small differences compound into serious money.
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- FDIC InsuranceFDIC insurance protects the money in your bank accounts — up to $250,000 per depositor, per bank, per ownership category — if the bank fails. It's automatic at member banks and backed by the U.S. government, which is why insured deposits are considered risk-free.
- FHA LoanAn FHA loan is a government-backed mortgage designed for buyers with smaller down payments or lower credit scores — as little as 3.5% down with a 580 score. The trade-off is mortgage insurance premiums that, unlike PMI, often last the life of the loan.
- FICAFICA is the payroll tax that funds Social Security and Medicare, split evenly between you and your employer. Your share is 7.65% of wages — 6.2% for Social Security (up to an annual wage cap) and 1.45% for Medicare — and it's withheld from every paycheck separately from income tax.
- FICA TaxFICA is the payroll tax that funds Social Security and Medicare. Employees pay 7.65% of wages — 6.2% for Social Security (up to an annual wage cap) plus 1.45% for Medicare — and employers match it. It's separate from federal income tax and comes out of nearly every paycheck.
- Fixed-Rate MortgageA fixed-rate mortgage keeps the same interest rate — and the same principal-and-interest payment — for the entire loan, typically 15 or 30 years. It trades a slightly higher starting rate than an ARM for total predictability, the reason it's the most popular U.S. home loan.
G
- Grace PeriodA grace period is the window between a credit-card statement's close and its due date — usually about 21 days — during which you can pay the full balance and owe zero interest. Carry a balance past it, and interest starts accruing, often erasing the grace period entirely.
- Gross vs. Net IncomeGross income is your total pay before anything is taken out; net income — your take-home pay — is what actually lands in your account after taxes, payroll deductions, and benefits. Lenders and budgets use different ones, which is why the same salary can feel like two numbers.
H
- Hard vs. Soft Credit InquiryA hard inquiry happens when a lender checks your credit for a new application and can temporarily ding your score by a few points; a soft inquiry — checking your own score or a pre-qualification — doesn't affect it at all. Only hard inquiries are visible to lenders.
- Health Savings Account (HSA)An HSA is a tax-advantaged account for medical costs, available if you have a high-deductible health plan. It's uniquely triple-tax-free: contributions are deductible, growth is untaxed, and withdrawals for qualified medical expenses are tax-free — no other account does all three.
- HELOC (Home Equity Line of Credit)A HELOC is a revolving line of credit secured by your home equity — like a credit card backed by your house. You borrow as needed up to a limit during a draw period, paying interest only on what you use, usually at a variable rate.
- High-Yield Savings AccountA high-yield savings account (HYSA) is a federally insured savings account that pays far more interest than a typical big-bank account — often 8 to 10 times the national average. Online banks offer them because they skip branch costs, not because they take more risk with your money.
- Home AppraisalA home appraisal is an independent professional's estimate of a property's market value, ordered by the lender to make sure the home is worth what you're borrowing. If it appraises below the purchase price, the lender won't finance the gap — a common deal snag.
- Home EquityHome equity is the portion of your home you actually own — its current market value minus what you still owe on the mortgage. It grows two ways: as you pay down the loan's principal and as the home appreciates in value, making it a cornerstone of most households' net worth.
I
- Index FundAn index fund is a mutual fund or ETF that simply holds every stock (or bond) in a market index, like the S&P 500, instead of trying to beat it. Because there's no expensive stock-picking, fees are tiny — and decades of data show most active managers fail to outperform a low-cost index after costs.
- InflationInflation is the gradual rise in prices that erodes the purchasing power of money over time — a dollar buys less each year. Even a modest 3% annual rate roughly halves what your cash is worth over 24 years, which is why keeping long-term money invested matters.
- Insurance DeductibleAn insurance deductible is the amount you pay out of pocket on a claim before your insurance starts paying. A $1,000 deductible means you cover the first $1,000 of a covered loss. Choosing a higher deductible lowers your premium but raises your cost when something happens.
- Insurance PremiumAn insurance premium is the recurring amount — monthly, quarterly, or yearly — you pay to keep a policy active, whether or not you ever file a claim. It's the price of transferring a risk you couldn't afford to bear yourself to the insurer.
- IRA RolloverA rollover moves retirement money from one account to another — most often from an old employer's 401(k) into an IRA — without triggering taxes or penalties. It keeps your savings growing tax-advantaged while giving you more investment choices and lower fees.
- Itemized DeductionsItemized deductions are specific expenses — mortgage interest, state and local taxes (capped at $10,000), charitable gifts, big medical bills — that you can subtract from taxable income instead of taking the standard deduction. You choose whichever is larger.
K
- 401(k)A 401(k) is an employer-sponsored retirement account you fund straight from your paycheck, often with a matching contribution from your employer. Traditional 401(k) money goes in pre-tax and lowers this year's taxable income; a Roth 401(k) is funded after-tax and comes out tax-free.
- 401(k) Employer MatchAn employer match is money your company adds to your 401(k) based on what you contribute — commonly 50% of your contributions up to 6% of your salary. It's an immediate, guaranteed return on your savings, which is why the near-universal advice is to contribute at least enough to capture the full match.
L
- LiquidityLiquidity is how quickly you can turn an asset into cash without losing value. Cash and a savings account are highly liquid; a home or a retirement account is not. Matching liquidity to when you'll need money is the core of deciding where to keep it.
- Loan-to-Value Ratio (LTV)Loan-to-value ratio is your loan amount divided by the home's value, as a percentage. A $320,000 loan on a $400,000 home is 80% LTV. Lenders watch it closely: a lower LTV means less risk, better rates, and — at 80% or below — no private mortgage insurance.
M
- Marginal Tax RateYour marginal tax rate is the rate you pay on your last dollar of income — the tax bracket your top dollar falls into. Because the US uses progressive brackets, it's higher than your effective (average) rate: moving into a higher bracket only taxes the income above that threshold, never your whole income.
- Marginal vs Effective Tax RateYour marginal tax rate is the rate on your last dollar of income — the bracket you're 'in.' Your effective rate is total tax divided by total income, and it's always lower because your earlier dollars were taxed in lower brackets. Being in the 22% bracket does not mean you pay 22% on everything.
- Minimum PaymentThe minimum payment is the smallest amount you can pay on a credit card to keep the account in good standing — often around 2% of the balance. Paying only the minimum is a trap: it stretches repayment over years and can more than double what you pay through interest.
- Money Market AccountA money market account is a bank deposit that blends savings and checking: a competitive interest rate with limited check-writing or debit access. It's FDIC-insured and fully liquid, making it a common home for a larger emergency fund you occasionally tap.
- Mortgage PreapprovalA mortgage preapproval is a lender's conditional commitment to lend you a specific amount, based on a review of your finances and credit. It's stronger than a prequalification and tells sellers you're a serious, ready buyer — often required before an offer is taken seriously.
- Mortgage UnderwritingUnderwriting is the lender's process of verifying your income, assets, debts, and the property's value to decide whether to approve your mortgage and on what terms. It's where a preapproval becomes a real loan, and where your DTI and credit are scrutinized in detail.
- Mutual FundA mutual fund pools money from many investors to buy a diversified portfolio of stocks or bonds, managed as one. You own shares of the fund rather than the underlying holdings, and the price is set once a day after the market closes — the main difference from an ETF.
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P
- 529 PlanA 529 plan is a tax-advantaged account for education costs. Your contributions grow tax-free, and withdrawals for qualified expenses — tuition, room and board, even up to $10,000 of student loans — are tax-free too. Many states also offer a tax deduction for contributing.
- PensionA pension (defined-benefit plan) is an employer promise to pay you a set monthly amount in retirement, usually based on your salary and years of service. Once common, they've largely been replaced by 401(k)s, which shift the investment risk from the employer to you.
- PITIPITI stands for the four parts of a typical mortgage payment: Principal, Interest, Taxes, and Insurance. It's the true monthly cost of owning — not just principal and interest — and it's the figure lenders use in debt-to-income calculations to decide how much home you can afford.
- PMI (Private Mortgage Insurance)PMI is insurance that protects the lender — not you — when your down payment is less than 20% of a home's price. It typically costs 0.2% to 1.5% of the loan amount per year, added to your monthly payment, and can be removed once you reach 20% equity in the home.
- Prime RateThe prime rate is the interest rate banks charge their most creditworthy customers, and it moves with the Federal Reserve's benchmark rate. It's the anchor for variable-rate products — credit cards, HELOCs, and many personal loans are priced as 'prime plus' a margin.
- PrincipalPrincipal is the original amount you borrow or invest, separate from the interest on it. On a loan, each payment splits between interest (the cost of borrowing) and principal (which actually shrinks the debt) — and early on, most of a mortgage payment goes to interest.
R
- RebalancingRebalancing means periodically selling what's grown and buying what's lagged to return your portfolio to its target asset allocation. It enforces 'buy low, sell high' automatically and keeps your risk from drifting higher than you intended as stocks outrun bonds.
- RefinancingRefinancing replaces your existing mortgage with a new one, usually to get a lower interest rate, change the term, or tap equity. It's worth it when the monthly savings outlast the closing costs — and when the deal still saves money over the full life of the loan, not just per month.
- Required Minimum Distribution (RMD)A required minimum distribution is the amount the IRS forces you to withdraw each year from tax-deferred retirement accounts — traditional IRAs and 401(k)s — starting at age 73. Because that money was never taxed, the government eventually makes you take it out and pay income tax on it.
- Reverse MortgageA reverse mortgage lets homeowners 62 and older borrow against their home equity and receive payments instead of making them, with the loan repaid when they sell, move out, or pass away. It can supplement retirement income but steadily shrinks the equity you leave behind.
- Roth IRAA Roth IRA is a retirement account you fund with after-tax money, so qualified withdrawals in retirement — including all the growth — are completely tax-free. You get no deduction now, but decades of compounding come out untaxed, and there are no required minimum distributions during your lifetime.
- Rule of 72The Rule of 72 is a mental shortcut for compound growth: divide 72 by your annual rate of return to estimate how many years it takes money to double. At 7% a year, money doubles in roughly 72 ÷ 7 ≈ 10 years; at 9%, about 8 years.
S
- Safe Withdrawal Rate (4% Rule)The safe withdrawal rate is the share of your retirement savings you can spend in the first year — then adjust for inflation — without running out over a long retirement. The classic benchmark is 4%, which historically lasted 30 years in most market scenarios.
- Secured vs. Unsecured LoanA secured loan is backed by collateral — a house for a mortgage, a car for an auto loan — that the lender can seize if you don't pay. An unsecured loan (most personal loans and credit cards) has no collateral, so it carries a higher rate to offset the lender's added risk.
- Self-Employment TaxSelf-employment tax is the 15.3% Social Security and Medicare tax that freelancers and business owners pay on their net earnings — covering both the employee and employer halves of FICA that a regular job splits with you. It's on top of income tax.
- Simple InterestSimple interest is calculated only on the original principal, never on interest already earned or owed. $1,000 at 5% simple interest earns exactly $50 a year, every year. It's the opposite of compound interest, where earnings themselves start earning.
- Sinking FundA sinking fund is money you set aside a little at a time for a known future expense — holidays, car repairs, insurance premiums, a vacation. By saving ahead in small amounts, you turn irregular big bills into manageable monthly deposits and avoid reaching for a credit card.
- Social SecuritySocial Security is the federal program that pays monthly retirement (and disability and survivor) benefits, funded by the payroll taxes you and your employer pay throughout your career. For a middle earner it replaces roughly 30–40% of pre-retirement income.
- Standard DeductionThe standard deduction is a flat amount that reduces the income you're taxed on, no receipts required. Most filers take it instead of itemizing because it's larger than their deductible expenses — for 2026 it's $16,100 for single filers and $32,200 for married couples filing jointly.
T
- Tax BracketA tax bracket is an income range taxed at a specific rate. The U.S. system is progressive, so moving into a higher bracket only taxes the income above that threshold at the higher rate — not your entire income. That's why a raise never leaves you with less take-home pay.
- Tax Credit vs. Tax DeductionA tax deduction lowers the income you're taxed on; a tax credit lowers your tax bill dollar-for-dollar. A $1,000 credit saves you $1,000, while a $1,000 deduction saves only your marginal rate times $1,000 — so credits are almost always more valuable.
- Tax RefundA tax refund is money the government returns when you've paid more through withholding and estimated payments than you actually owed. It feels like a windfall, but it's really your own money coming back — an interest-free loan you made to the IRS all year.
- Tax-Loss HarvestingTax-loss harvesting means selling an investment that's down to lock in a loss, then using that loss to offset capital gains — and up to $3,000 of ordinary income — on your tax return. You reinvest the proceeds to stay in the market, turning a paper loss into a real tax saving.
- Taxable IncomeTaxable income is the portion of your income the IRS actually taxes — your adjusted gross income minus the standard or itemized deduction. It's the number that determines which tax brackets apply, not your gross salary, which is why your effective rate is lower than it looks.
- Term Life InsuranceTerm life insurance covers you for a set period — often 10, 20, or 30 years — and pays a death benefit only if you die during that term. It's the cheapest way to protect your family, because it's pure insurance with no savings component attached.
- Traditional IRAA traditional IRA is a tax-deferred retirement account you open yourself. Contributions may be tax-deductible now, the balance grows without yearly taxes, and withdrawals in retirement are taxed as ordinary income. It's the mirror image of a Roth IRA, which taxes you now instead of later.
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- Whole Life InsuranceWhole life insurance covers you for your entire life and builds a 'cash value' savings component alongside the death benefit. Premiums are far higher than term insurance because part of each one funds that cash value, which grows slowly at a modest guaranteed rate.
- WithholdingWithholding is the income tax your employer takes out of each paycheck and sends to the IRS on your behalf, based on the W-4 you fill out. Get it right and you roughly break even at tax time; too little means a bill, too much means a refund of your own money.