Budget Calculator – Where Is Your Money Actually Going?

Most people think they have a rough idea of where their money goes — and most people are wrong. Research consistently shows people underestimate discretionary spending by 20–40%. Restaurant meals, streaming subscriptions, impulse purchases, and small daily habits add up far faster than intuition suggests. The 50/30/20 rule provides a practical diagnostic framework: 50% of after-tax income on needs (housing, food, utilities, transportation, minimum debt payments), 30% on wants (dining out, entertainment, hobbies), and 20% on savings and debt repayment. It's not a perfect prescription for everyone, but it's a powerful tool for identifying where your budget is misaligned. This calculator asks you to enter your actual monthly spending across every major category, then compares each against the 50/30/20 targets. You'll see which categories are over or under budget, whether you have a surplus or deficit, and exactly where the problem is. The most common discovery: the "needs" category is full of wants (upgraded apartment, premium car, streaming services rolled in as "utilities"), and the savings rate is half what people thought. Either way — seeing reality clearly is the first step to changing it.

Budget surplus/deficit = Monthly take-home income – Total monthly expenses 50/30/20 targets: · Needs allowance = Income × 0.50 · Wants allowance = Income × 0.30 · Savings/debt target = Income × 0.20 For each category: · Over/under = Actual spending – Allowance Needs include: rent/mortgage, utilities, groceries, minimum loan payments, basic transportation, health insurance. Wants include: dining out, entertainment, subscriptions, clothing upgrades, gym, travel. Savings/debt: emergency fund, retirement contributions, extra debt payments, investments.