What counts as a 'need' vs a 'want'?

Needs are expenses you cannot avoid: rent or mortgage, utilities, groceries, basic transportation, insurance, and minimum debt payments. Wants are optional lifestyle expenses: restaurants, streaming services, vacations, and non-essential shopping. The line can be blurry — a car might be a need for commuting but a luxury model is a want.

What income should I use — gross or net?

Use your after-tax (net) take-home pay. The 50/30/20 rule is based on the money you actually receive, not your gross salary. If your employer withholds taxes and benefits automatically, use what lands in your bank account each pay period.

What if I can't hit 20% savings?

Start with what you can — even 5% or 10% is better than nothing. The 50/30/20 rule is a guideline, not a strict rule. If your needs consistently exceed 50%, look for ways to reduce fixed costs (housing, car payment) or increase income. Use this calculator to identify which category is out of balance.

50/30/20 Rule Spending tracker Any pay frequency

50/30/20 Budget Calculator

The 50/30/20 rule splits your after-tax income into needs, wants, and savings. Enter your income to get your targets — then fill in actual spending to see where your money really goes.

Needs (50%) — Housing, food, transport, insurance

Wants (30%) — Dining, entertainment, subscriptions

Savings (20%) — Emergency fund, retirement, debt payoff

All calculations happen locally. No data is stored or uploaded.

Step 1 — Your after-tax income

Step 2 — Track actual spending

Enter what you actually spend each month. The results panel updates automatically.

Needs (50% target: —)

Rent / Mortgage Utilities Groceries Transportation Insurance Minimum debt payments

Wants (30% target: —)

Dining out Entertainment Subscriptions Shopping (non-essential) Other wants

Savings & debt (20% target: —)

Emergency fund Retirement (401k / IRA) Investments Extra debt payments

Budget breakdown

Category	Target	Actual
Needs (50%)	—	—
Wants (30%)	—	—
Savings (20%)	—	—

Unallocated —

Reading the results

Needs in green = under 50% target — good.
Wants in green = under 30% target — good.
Savings in green = hitting 20% or above — great.
Red numbers mean you're over the guideline for that category.

Privacy: All calculations happen in your browser. Nothing is stored.

The 50/30/20 Rule Explained

Why it works

The 50/30/20 rule, popularized by Senator Elizabeth Warren in All Your Worth, gives you a simple guardrail without requiring a detailed line-item budget. It's flexible enough to adapt to most income levels and helps you prioritize savings and debt payoff as equals to daily spending.

When to adjust the ratios

High cost-of-living area: Needs may realistically be 60–65%. Compress wants to 15–20% instead.
Aggressive debt payoff: Redirect from wants to savings/debt to 30–40% temporarily.
Early retirement goal: Push savings to 40–50%, cut wants significantly.
The rule is a starting point — use this calculator to find your real numbers.

Net Worth Calculator

See the big picture — total assets minus total liabilities. Track progress quarter over quarter.

Calculate net worth →

Debt Payoff Planner

Once you know how much you can allocate to debt payoff, use the snowball or avalanche planner to eliminate it fastest.

Plan payoff →

Compound Interest & Savings Planner

Project how your 20% savings grows over time with compound interest.

Project savings →

FAQ

What is the 50/30/20 rule?

The 50/30/20 rule divides your after-tax income: 50% to needs (housing, food, utilities, insurance, minimum debt payments), 30% to wants (dining, entertainment, subscriptions), and 20% to savings and extra debt repayment.

Should I use gross or net income?

Use your after-tax (net) take-home income — the amount that hits your bank account. If you have pre-tax deductions (401k, health insurance) taken out by your employer, use the post-deduction amount as your base.

Where does debt repayment fit?

Minimum debt payments count as Needs (they're non-negotiable). Any extra payments above minimums — like adding $200/month to a credit card balance — count toward Savings (the 20% bucket). Use the Debt Payoff Planner to maximize that extra payment.

What if my needs already exceed 50%?

This is common, especially in high-cost areas. The guideline is flexible. Focus first on identifying which needs are fixed vs reducible. Long-term, reducing the largest need (usually housing) has the biggest impact on freeing up money for savings.