5.2 Creating a Budget

What a Budget Does

A budget is a plan for managing income and expenses over a set period. It helps individuals track money coming in versus money going out, ensuring spending aligns with financial goals. Budgets promote financial discipline, prevent overspending, and reveal opportunities to save or invest surplus funds toward short- and long-term goals.

Fixed vs. Variable Expenses

Fixed expenses (rent, car payments, insurance) stay the same each period, making them easy to predict. Variable expenses (groceries, entertainment, utilities) fluctuate and are harder to control. A good budget accounts for both, plus discretionary spending (non-essential wants), to build an accurate, realistic financial picture.

Building & Adjusting a Budget

Creating a budget involves listing net income, categorizing expenses, and comparing totals to identify a surplus or deficit. A surplus can be saved or invested; a deficit requires cutting costs. Budgets should be reviewed and adjusted regularly as income, expenses, or goals change to stay realistic and effective.

Key terms

Budget

A plan for managing income and expenses over a set period of time.

Fixed expense

An expense that stays the same amount each period, like rent or car payments.

Variable expense

An expense that changes in amount each period, like groceries or utilities.

Surplus

When income exceeds expenses in a budget, leaving extra money to save or invest.

Deficit

When expenses exceed income in a budget, requiring spending cuts or more income.

Try an AP-style question

Using the 50/30/20 rule, how much goes to savings?

1. $300
2. $600
3. $900
4. $1,500