About Monthly Budget Calculator
The Monthly Budget Calculator helps you plan your income and spending across categories and see how your allocation compares to common budgeting benchmarks. The most widely used is the 50/30/20 rule: 50% of after-tax income for needs (housing, food, utilities, transport), 30% for wants (dining out, entertainment, subscriptions), and 20% for savings and debt repayment.
Enter your take-home monthly income and your expected spending in each category. The tool totals everything up, calculates your surplus or deficit, and shows your percentage split side by side with the benchmark. You can see immediately whether your housing costs are consuming too much of your income, whether your savings rate is where it needs to be, or where you have room to adjust.
This tool is for freelancers and self-employed individuals who do not have a fixed monthly income, as well as salaried employees who want to understand where their money goes each month. Irregular earners can use the average of the past three months as their income figure.
The 50/30/20 rule is a starting point, not a rule. Someone in an expensive city might spend 60% on needs and have less room for wants. Someone with student debt might prioritize the 20% savings bucket toward debt repayment first. The value of this tool is not hitting a target percentage - it is seeing your actual spending clearly so you can make deliberate choices.
Your budget entries are saved in your browser's local storage and are there when you return on the same device. Nothing is sent to a server, and no account is required. The data lives only in your browser.