How it works
The 50/30/20 rule divides your after-tax income into three buckets:
Needs = 50% × income · Wants = 30% × income · Savings = 20% × income
- Needs (50%): expenses you must pay to live and work. Rent or mortgage, utilities, groceries, insurance, transportation to work, childcare and minimum payments on debts.
- Wants (30%): things that improve your life but aren't essential. Restaurants, entertainment, hobbies, travel, streaming services, upgrades beyond the basics.
- Savings (20%): emergency fund contributions, retirement and other investing, and debt payments above the minimum.
If you enter your current spending, the calculator shows each category as a percentage of income and reports any money left unallocated or the amount you are over budget:
Unallocated = income − needs − wants − savings
Use take-home pay, after taxes. If retirement contributions come out of your paycheck before you are paid, you can add them back to income and to savings for a fuller picture.
Worked examples
$5,000 monthly take-home pay
Needs: $2,500.00. Wants: $1,500.00. Savings and debt payoff: $1,000.00, or $12,000.00 a year.
$4,200 take-home, currently spending $2,600 on needs, $1,100 on wants, saving $300
Targets: $2,100.00 needs, $1,260.00 wants, $840.00 savings. Actual: needs are 62% (over target), wants 26%, savings only 7%, and $200.00 is unallocated. Wants are already under the 30% target, so the fix is on the savings side: put the $200.00 that is unallocated into savings, then move another $340.00 into savings (from needs, the category that is over target) to reach the 20% goal.
$7,500 monthly take-home pay
Needs $3,750.00, wants $2,250.00, savings $1,500.00 a month ($18,000.00 a year).
Where the 50/30/20 rule comes from
The framework was popularized by Senator Elizabeth Warren and her daughter Amelia Warren Tyagi in the book All Your Worth. Its appeal is simplicity. Instead of tracking dozens of categories, you watch three numbers.
Making it work when the numbers don't fit
In high-cost areas, housing alone can take 40% of take-home pay or more, so needs often exceed 50%. That is common. Some adjustments:
- Flex the ratios. A 60/20/20 or 60/30/10 split can be a realistic starting point. The key is to keep saving something and to increase it over time.
- Attack the big three. Housing, transportation and food usually make up most of the needs bucket. A roommate, a cheaper car or cooking more can free up hundreds of dollars a month.
- Raise income. Asking for a raise, changing jobs or adding side income can grow every bucket at once. See your take-home pay with the paycheck calculator.
- Reclassify honestly. A basic phone plan is a need, but the newest phone is a want. A reliable car is a need, but a luxury model is mostly a want.
What to do with your 20%
- Build a starter emergency fund of about $1,000–$2,000.
- Contribute enough to get any employer retirement match.
- Pay off high-interest debt such as credit cards. See the credit card payoff calculator.
- Grow the emergency fund to 3–6 months of essential expenses.
- Increase retirement saving toward 15% of income, and save for other goals with the savings goal calculator.
Tips for sticking to a budget
- Pay yourself first. Automate transfers to savings on payday so the 20% happens before you can spend it.
- Use separate accounts. Keeping bills in one checking account and spending money in another makes it easy to see what is left for wants.
- Review monthly. Compare actual spending with your targets and adjust. Irregular expenses like car repairs, gifts and annual subscriptions are easier to absorb if you set aside a little each month.
- Leave room for fun. A budget with no wants rarely lasts. The 30% exists so you can enjoy your money guilt-free.
Other budgeting methods
If 50/30/20 feels too loose, try zero-based budgeting, where every dollar is assigned a job, or the envelope method, where you set fixed cash limits per category. If it feels too strict, an 80/20 budget saves 20% first and lets you spend the rest freely. The best budget is the one you will actually follow.
Examples of needs vs. wants
| Needs (50%) | Wants (30%) | Savings & debt (20%) |
|---|---|---|
| Rent or mortgage | Dining out and takeout | Emergency fund |
| Utilities and internet | Streaming and subscriptions | 401(k) or IRA contributions |
| Groceries | Travel and vacations | Extra credit card payments |
| Health, car and renters/home insurance | Hobbies and entertainment | Extra student loan or mortgage principal |
| Car payment, gas, transit | Clothing beyond basics | Brokerage investing |
| Minimum debt payments | Gym memberships, gadgets | Saving for a home or car |
Budgeting with irregular income
If you are self-employed, work on commission or earn tips, base your budget on a conservative month, such as your lowest month of the past year, rather than your average. In good months, put the surplus in a buffer account. In lean months, draw from it to cover needs. Once the buffer holds a month or two of expenses, you can budget each month using last month's income, which smooths out the ups and downs.
Set aside money for taxes first if they aren't withheld from your pay. Then apply the 50/30/20 split to what remains.
How to start budgeting this month
- Find your monthly take-home pay from recent pay stubs.
- Pull the last two or three months of bank and card statements.
- Sort each expense into needs, wants or savings.
- Enter the totals above to compare them with the 50/30/20 targets.
- Pick one or two changes to make this month, and automate your savings transfer.
Revisit your budget whenever your income or major expenses change, such as a new job, a move, a new baby or paying off a loan. When a debt is paid off, redirect that payment to savings rather than letting it disappear into everyday spending.
Frequently asked questions
What is the 50/30/20 rule?
A budgeting guideline that splits after-tax income into 50% for needs, 30% for wants and 20% for savings and extra debt payments.
Is the 50/30/20 rule based on gross or net income?
Net, or take-home, income: what lands in your bank account after taxes. If payroll deductions like 401(k) contributions come out first, you can add them back to income and count them as savings.
Do debt payments count as needs or savings?
Minimum required payments are needs. Anything you pay above the minimum to get out of debt faster counts toward the 20% savings bucket.
What if my needs are more than 50%?
That is common, especially where housing is expensive. Start with a ratio that works, such as 60/20/20, then look for ways to lower fixed costs or raise income over time.
Is 20% enough to save?
It is a solid general target. If you started saving late or want to retire early, you may need more. Retirement alone is often planned at 15% of gross income.
Should I include my partner's income?
If you share expenses, budget together using combined take-home pay and combined spending. Otherwise budget your own share.
Is this budget calculator private?
Yes. Everything is calculated in your browser and nothing is sent to a server.