Grade your budget against the 50/30/20 rule. See where your money flows with an interactive Sankey diagram, detect spending leaks, compare to national averages, and get an 8-dimension report card. 100% free, no signup required.
This free budget calculator helps you analyze your monthly spending against the widely recommended 50/30/20 rule. Start by entering your monthly take-home pay (your after-tax income that actually hits your bank account). Then fill in your expenses across three categories: Needs (essential expenses you must pay), Wants (lifestyle spending you enjoy), and Savings (money you're putting toward future goals).
As you enter numbers, the calculator instantly grades your budget on a scale from A+ to F, shows you a money flow Sankey diagram that visualizes exactly where every dollar goes, and detects "money leaks" — areas where your spending significantly exceeds national averages for your income bracket.
Use the preset buttons to load sample budgets for different life stages (College Graduate, Young Professional, Family, High Earner, Debt Payoff, FIRE Saver) to see how different spending patterns score. You can also try the What-If Simulator to model changes before committing to them.
The 50/30/20 rule was popularized by Senator Elizabeth Warren in her book "All Your Worth: The Ultimate Lifetime Money Plan." It provides a simple, easy-to-follow framework for dividing your after-tax income into three buckets:
The rule isn't meant to be rigid — it's a starting guideline. People in high cost-of-living areas may need 60% for needs, while FIRE (Financial Independence, Retire Early) adherents might save 50%+. The key is to know where you stand and make intentional decisions about your money.
The Sankey diagram in this calculator provides a visual answer to one of the most common personal finance questions: "Where does my money actually go?" Income flows in from the left and splits into Needs, Wants, and Savings branches, then further splits into individual spending categories. The width of each flow is proportional to the dollar amount, making it instantly clear which categories consume the most money.
This visualization often reveals surprising patterns. Many people discover they spend more on dining out than they contribute to retirement, or that their "small" subscriptions add up to a meaningful percentage of income. Seeing the full picture in one diagram makes it easier to identify where changes will have the biggest impact.
A "money leak" is any spending category where you're significantly above the national average for your income bracket, often without realizing it. This calculator compares your spending to data from the Bureau of Labor Statistics (BLS) Consumer Expenditure Survey to flag potential leaks.
Common money leaks include: subscription services you forgot about ($50-200/month is typical), dining out habitually instead of selectively, lifestyle inflation after raises (spending increases to match income), and convenience spending (delivery fees, premium services, impulse purchases).
To fix leaks: audit all subscriptions quarterly, implement a 24-hour rule for non-essential purchases over $50, use the daily cost reframing feature to understand the true cost of habits, and redirect saved money directly to savings accounts to avoid re-spending it.
This calculator uses data from the BLS Consumer Expenditure Survey (2023) to provide income-adjusted benchmarks for each spending category. The benchmarks vary by income bracket because spending patterns naturally shift as income increases — higher earners typically spend a smaller percentage on housing and groceries but more on discretionary categories.
The six income brackets used are: under $30K, $30-50K, $50-70K, $70-100K, $100-150K, and $150K+. Your budget is compared to averages for your specific bracket, so the comparison is fair regardless of income level. Categories where you spend more than 50% above your bracket's average are flagged as potential money leaks.
The 50/30/20 rule is a budgeting guideline that suggests allocating 50% of after-tax income to needs, 30% to wants, and 20% to savings and debt repayment. It was popularized by Senator Elizabeth Warren as a simple framework for balanced financial management.
Start with your total monthly take-home pay — after-tax income only. Divide expenses into three buckets using the 50/30/20 framework: needs (housing, food, transport — target 50%), wants (dining, entertainment, subscriptions — target 30%), and savings (emergency fund, retirement, investments — target 20%). For example, on $5,000/month take-home: $2,500 for needs, $1,500 for wants, $1,000 toward savings. Compare your actual percentages to those targets monthly and adjust whichever bucket is furthest off first.
The standard recommendation is 20% of after-tax income. This includes retirement contributions, emergency fund building, and investments. If you're starting from zero, begin with whatever you can (even 5%) and increase by 1% each month until you reach your target.
20% is considered solid. Rates above 30% are excellent and can lead to early financial independence. According to the U.S. Bureau of Economic Analysis (BEA), the average American personal savings rate hovers around 3-5% of disposable income, so even reaching 10-15% puts you well ahead of most households. The FIRE movement typically targets 50%+ savings rates to achieve retirement in 10-15 years.
Financial experts recommend spending no more than 28-30% of gross income on housing. For after-tax income, aim for 30-35% maximum, though under 25% gives much more flexibility. If housing exceeds 35% of take-home pay, consider roommates, relocation, or refinancing options.
On a lower income, the 50/30/20 split often needs adjustment — needs may consume 60-70%, and that's okay. Focus on: covering essentials first, building a starter emergency fund ($500-1000), reducing wants strategically (audit subscriptions, meal plan), and gradually increasing income through skills development or side work.
Needs are expenses you cannot avoid: rent, utilities, groceries, transportation to work, health insurance, minimum debt payments, and phone/internet. Wants are lifestyle choices you could eliminate: dining out, streaming subscriptions, gym memberships, travel, and non-essential shopping. A quick test — if you lost your job today, would you still have to pay it? Yes = need. The 50/30/20 rule targets keeping needs at or below 50% of after-tax income.