Reference

Budgeting Glossary

Plain-English definitions for the budgeting and personal finance terms used across Ledgr's calculators and guides — jump to any term below, or use it as a quick reference while you plan.

APR (Annual Percentage Rate): The yearly interest rate charged on a debt, including most fees, expressed as a single percentage. It's the number used to compare how expensive two loans or credit cards really are — a higher APR means more interest paid on the same balance over the same time. Used directly in the Debt Payoff Calculator.
Cash Stuffing: A budgeting method where cash is divided into labeled envelopes for each spending category, and spending stops once an envelope is empty. It's the modern, social-media-driven name for the decades-old envelope system. See the full Cash Stuffing 101 guide.
Compound Interest: Interest calculated on both the original balance and the interest that balance has already earned. It's the reason a savings or investment plan started earlier needs a much smaller monthly contribution than the same goal started later — the earliest dollars in have the most time to compound. Modeled directly in the Growth Projector.
Debt Avalanche: A debt payoff strategy that targets the debt with the highest interest rate first, regardless of its balance, while paying minimums on everything else. It minimizes total interest paid over time, though it can take longer to see a debt fully disappear than the Debt Snowball method. Compare both in the Debt Payoff Calculator.
Debt Snowball: A debt payoff strategy that targets the smallest balance first, regardless of interest rate, while paying minimums on everything else. It usually costs a bit more in total interest than the Avalanche method, but the faster string of "paid off" wins tends to keep people motivated to stick with the plan. Compare both in the Debt Payoff Calculator.
Emergency Fund: Cash set aside specifically for expenses you can't predict — a layoff, a medical bill, an urgent repair. Usually sized in months of essential spending (commonly 3-9). See the Emergency Fund Runway Calculator.
Financial Runway: How long your current savings could cover your essential expenses with no additional income — literally how much "runway" you have before you'd run out of money. It's the same concept behind an emergency fund target, just framed in months instead of dollars. Calculate yours with the Emergency Fund Runway Calculator.
HYSA (High-Yield Savings Account): A savings account, typically at an online or FDIC-insured bank, that pays a meaningfully higher interest rate than a standard checking or savings account, while keeping money fully liquid. A common home for emergency funds and other cash you need to keep safe and accessible rather than invested.
Needs vs. Wants: "Needs" are the expenses that don't stop if your income does — rent, utilities, groceries, minimum debt payments. "Wants" are discretionary — dining out, subscriptions, entertainment. The split matters because it's usually Wants that get cut first in a real budget crunch, and it's your Needs total that should drive an emergency fund target, not your whole budget. Sort your own categories in the Zero-Based Budget Planner.
PITI (Principal, Interest, Taxes, Insurance): The four components that typically make up a full monthly mortgage payment: principal (paying down what you borrowed), interest (the cost of borrowing it), property taxes, and homeowners insurance — often collected together in an escrow account. Break yours down in the Rent vs. Buy Calculator.
Semi-Monthly vs. Bi-Weekly: Semi-monthly pay lands on two fixed dates a month (like the 1st and 15th) for 24 paychecks a year. Bi-weekly pay lands every 14 days for 26 paychecks a year — which means two months a year bring a third, "extra" paycheck. Budget by your actual pay frequency in the Zero-Based Budget Planner.
Sinking Fund: Money set aside gradually, in small regular amounts, for an expense you know is coming but that isn't monthly — an annual insurance bill, the holidays, a car that'll eventually need tires. Unlike an emergency fund, a sinking fund covers the predictable, not the unexpected. Plan yours with the Sinking Fund Calculator.
Variable Expense: A cost that recurs but changes in amount or timing — groceries, gas, a utility bill that swings with the season. It sits between a fixed expense (same amount, every month) and a sinking-fund expense (predictable but infrequent), and it's often where small "sneaky" costs hide. Find yours with the Sneaky Expense Calculator.
Velocity Payoff: The acceleration effect that happens once a debt is fully paid off and its minimum payment gets rolled into the next targeted debt instead of disappearing from the budget. Each payoff frees up more monthly "ammunition" for the next one, which is why both the Snowball and Avalanche methods speed up as they go rather than moving at a constant pace. See it in action in the Debt Payoff Calculator.
Zero-Based Budgeting: A budgeting method where every dollar of income is assigned a specific job — a category, a savings goal, a debt payment — until income minus allocations equals exactly zero. Nothing is left unassigned to quietly disappear into random spending. Try it in the Zero-Based Budget Planner.