Budget Calculator

Use the 50/30/20 rule to allocate your monthly take-home income.

After-tax income you actually receive each month

What Is the 50/30/20 Rule?

The 50/30/20 rule is a simple budgeting framework popularized by Senator Elizabeth Warren in her book All Your Worth: The Ultimate Lifetime Money Plan. It divides your after-tax income into three categories: 50% for needs (essentials you must have), 30% for wants (things that improve your quality of life), and 20% for savings or extra debt payments.

The split is a guideline, not a strict rule. High-cost-of-living cities may require 60%+ for needs. Adjust the percentages above to match your real situation. The core principle: savings should come before discretionary spending — pay yourself first.

What Falls in Each Category?

Needs (50%) — Essential Expenses

Housing (rent/mortgage), utilities, groceries, transportation to work, minimum debt payments, health insurance premiums, childcare. These are expenses you cannot reasonably cut without impacting your basic stability.

Wants (30%) — Lifestyle Spending

Dining out, streaming subscriptions, gym memberships, hobbies, shopping for non-essentials, travel, entertainment, and upgrades (e.g., a nicer apartment than you need). These are choices that improve your life but aren’t strictly necessary.

Savings & Debt (20%) — Your Future

Emergency fund, retirement contributions (401k, IRA), investing, extra debt payments beyond minimums. This category is about building financial security. Most financial advisors recommend 3–6 months of expenses as an emergency fund target.

Frequently Asked Questions

Should I use gross or net income for the 50/30/20 rule?

Use your net (take-home) income — the amount deposited after taxes and any pre-tax deductions. Taxes aren’t a “need” you can choose; they come out before you ever see the money. If your employer deducts 401(k) contributions pre-tax, you might count those toward your 20% savings.

What if my needs alone take up more than 50%?

That’s common, especially in expensive cities or for lower-income households. If needs exceed 50%, adjust the percentages above to reflect reality and focus on trimming the “wants” category first. The framework is a target, not a source of guilt. Small steps toward 20% savings matter.

Is my internet bill a “need” or a “want”?

For most people today, basic internet access is a need (required for work, school, and essential services). A basic plan is a need; upgrading to the fastest gigabit package is a want. Similarly, a phone plan is a need; the latest iPhone every year is a want.

How much should I have in an emergency fund?

The standard recommendation is 3–6 months of essential living expenses. If you have variable income, a less stable job, or dependents, aim for 6 months. Once your emergency fund is fully funded, redirect that 20% toward retirement savings or other investments.

Are there alternatives to the 50/30/20 rule?

Yes. The 70/20/10 rule (70% expenses, 20% savings, 10% giving) works for tighter budgets. Zero-based budgeting assigns every dollar a job. Envelope budgeting uses cash for each category. The 50/30/20 rule is popular because it’s simple and flexible enough for most households.