Budget Calculator
Track income and expenses with this free monthly Budget Calculator. Calculate monthly surplus, savings rate, and expense ratio with interactive charts for India, US, and UK.
Income Sources
Monthly Expenses
About This Calculator
This free Budget Calculator helps you take control of your personal finances by tracking monthly income sources and expenses across multiple categories. Whether you are budgeting for the first time or fine-tuning your financial plan, this tool provides clear insights into your spending patterns, savings rate, and overall financial health.
Simply enter your monthly income from salary, freelance work, investments, and other sources, then list your expenses across housing, food, transport, utilities, entertainment, and savings. The calculator instantly computes your total income, total expenses, monthly surplus or deficit, savings rate, and expense ratio. Interactive pie and bar charts visually show where your money goes each month.
How Budgeting Works
Budgeting is the process of creating a plan for how you will spend and save your money. The core formula is simple: Surplus = Total Income - Total Expenses. A positive surplus means you are living within your means and building savings. A negative surplus (deficit) means you are spending more than you earn and may need to cut expenses or increase income. The savings rate (surplus ÷ income x 100) measures what portion of your earnings you are keeping, while the expense ratio (expenses ÷ income x 100) shows what share goes to spending.
Regional Notes
India: The average household savings rate in India is approximately 30% of disposable income, one of the highest globally. Popular budgeting approaches include the 50/30/20 rule and the 70/20/10 rule. Common monthly expenses in metro cities like Mumbai, Delhi, and Bengaluru include rent (₹15,000-₹40,000), groceries (₹5,000-₹10,000), and transport (₹2,000-₹5,000).
United States: The 50/30/20 rule is widely recommended by financial experts. The average US household spends about 33% on housing, 13% on food, and 16% on transportation. The personal savings rate fluctuates between 5-8%, though financial advisors recommend aiming for 15-20%.
United Kingdom: UK households spend approximately 27% on housing, 11% on food and non-alcoholic drinks, and 14% on transport. The Office for National Statistics reports an average savings ratio of 8-10%. Popular budgeting methods include zero-based budgeting and the 50/30/20 rule adapted for UK living costs.
Frequently Asked Questions
How is budget surplus calculated?
Budget surplus is calculated as total income minus total expenses. A positive surplus means you are saving money each month, while a negative surplus (deficit) means you are spending more than you earn. For example, if your monthly income is ₹50,000 and total expenses are ₹40,000, your surplus is ₹10,000.
What is the 50/30/20 budgeting rule?
The 50/30/20 rule allocates 50% of after-tax income to needs (housing, food, utilities, transport), 30% to wants (entertainment, dining out, hobbies), and 20% to savings and debt repayment. This popular budgeting framework was popularized by Senator Elizabeth Warren and works well for beginners in India, the US, and the UK.
What percentage of income should go to housing?
Financial experts recommend spending no more than 30% of gross income on housing (rent or mortgage plus utilities). In Indian metro cities, this can stretch to 30-40% due to higher rents. In the US, lenders use the 28% front-end ratio for mortgage qualification. In the UK, the average household spends about 27% on housing costs.
How much should I save each month?
A common recommendation is to save at least 20% of your monthly income. This includes retirement contributions, emergency fund deposits, and other investment savings. In India, the average household savings rate is around 30% of disposable income. In the US, the personal savings rate averages 5-8%. In the UK, it averages 8-10%. Start with whatever you can and increase over time.
What is a good expense ratio for a budget?
A good expense ratio (total expenses divided by total income) should be below 80%, leaving at least 20% for savings. An expense ratio above 90% indicates your budget is tight and you may be at risk of debt. Below 70% is considered excellent. Track your expense ratio monthly to identify spending trends and areas for improvement.
How often should I review my budget?
Review your budget monthly to track actual spending against planned amounts. A more detailed review every quarter helps adjust categories as income or expenses change. Annual reviews are essential for major life changes like a new job, marriage, or buying a home. Use budgeting apps or this calculator for consistent tracking.
What categories should I include in my budget?
Essential budget categories include housing (rent/mortgage), food and groceries, transportation, utilities (electricity, water, internet), entertainment and leisure, and savings and investments. For more detailed tracking, add healthcare, insurance, education, debt payments, and personal care. Customize categories based on your lifestyle and financial goals.
How can I reduce my monthly expenses?
To reduce expenses, start by tracking all spending for a month to identify waste. Common savings include reducing dining out, cancelling unused subscriptions, negotiating bills (internet, insurance), using public transport, meal planning to reduce food waste, and switching to energy-efficient appliances. Even small changes of 5-10% per category add up significantly over a year.