Business Budget Calculator
Plan revenue, fixed costs, variable expenses, profit, cash surplus and budget margins with a simple monthly or annual business budget.
Build Your Business Budget
Add expected income and expenses to estimate your planned budget result.
Budget Period
Money In
Expected Income
Add sales, service revenue and other planned income.
Regular Costs
Fixed Expenses
Add recurring costs such as rent, salaries and subscriptions.
Flexible Costs
Variable Expenses
Add marketing, supplies, shipping and other changing costs.
Optional reserve calculated as a percentage of fixed plus variable expenses.
Budget Results
Monthly Budget Summary
Planned Budget Surplus
Add your expected income and expenses to calculate your business budget.
Total Income
Total Expenses
Budget Margin
Emergency Reserve
Budget Health
ReadyCalculate to review your planned income-to-expense position.
Expense Breakdown
Income vs Expenses
Budget Formula
Budget Result = Total Income − Total Planned Expenses
Important: This calculator provides planning estimates only. Actual revenue, taxes, payroll obligations, financing costs, seasonal changes and unexpected expenses may differ from your budget assumptions.
How It Works
Build a Business Budget in 3 Steps
Estimate your planned financial position using expected income and business expenses.
Estimate Income
Add expected sales, service revenue, subscriptions and other income sources.
Add Expenses
Enter fixed and variable costs such as rent, payroll, software and marketing.
Review Budget
See total expenses, planned surplus or deficit, margin and budget health.
Budget Categories
What to Include in a Business Budget
Business Revenue
Include expected sales, service fees, subscriptions, contracts and other operating income.
Fixed Expenses
Consider rent, recurring salaries, insurance, software subscriptions and other relatively stable costs.
Variable Expenses
Include costs that may change with sales volume, campaigns, production or operational activity.
Emergency Reserve
A contingency allowance can help represent unexpected costs not included in regular expense estimates.
Planned Surplus
Budget Deficit
Common Uses
Who Can Use This Budget Calculator?
Startups
Estimate planned operating costs, income and cash requirements.
Small Businesses
Organize monthly or annual revenue and expense assumptions.
Freelancers
Compare expected client income with software and operating costs.
Managers
Build simple departmental or project budget estimates.
Business Budget Guide
What Is a Business Budget Calculator?
A Business Budget Calculator is a planning tool that compares expected business income with planned expenses for a selected period. It can help create a simple estimate of whether projected revenue may exceed planned costs or whether the budget indicates a potential deficit.
This calculator allows you to create either a monthly or annual budget. You can add multiple income sources, separate fixed expenses from variable expenses and include an optional contingency reserve.
How to Calculate a Business Budget
Begin by estimating all expected income for the selected budget period. Then list planned fixed and variable expenses. Add an optional contingency amount if you want to represent unexpected costs.
Basic Business Budget Formula
Budget Result = Total Expected Income − Total Planned Expenses
A positive result represents a planned budget surplus. A negative result represents a projected deficit based on the values entered. These results are estimates and depend entirely on the assumptions used.
What Is the Difference Between Fixed and Variable Expenses?
Fixed expenses are costs that may remain relatively stable during the budget period. Examples can include office rent, recurring subscriptions, insurance and some salary costs.
Variable expenses can change with business activity. Examples may include advertising campaigns, shipping, sales commissions, transaction fees, raw materials and other costs linked to operational volume.
How to Calculate a Business Budget Surplus
A planned surplus is the amount remaining after total planned expenses are subtracted from expected income. In this calculator, the expense total can include fixed expenses, variable expenses and the selected contingency reserve.
Planned Surplus Formula
Planned Surplus = Expected Revenue − Planned Expenses
How Is Budget Margin Calculated?
Budget margin expresses the planned budget result as a percentage of total expected income. A positive margin indicates that expected income is greater than planned expenses, while a negative margin indicates the opposite.
Budget Margin Formula
Budget Margin = (Budget Result ÷ Total Income) × 100
Monthly vs Annual Business Budgets
A monthly business budget focuses on expected income and expenses for one month. It may be useful for regular operational planning, short-term cash management and reviewing recurring costs.
An annual business budget covers a full year. Annual planning can be useful for larger spending decisions, yearly targets and high-level financial planning. Businesses with seasonal activity may need detailed month-by-month forecasts rather than relying only on a single annual total.
Why Add a Contingency Reserve?
Actual costs may differ from planned costs. Equipment repairs, price changes, additional marketing, unexpected professional fees and other events can create expenses that were not included in the original budget.
A contingency reserve is one way to represent some uncertainty in a planning model. This calculator applies the selected reserve percentage to the combined fixed and variable expense total.
Common Business Budget Mistakes
One common mistake is overestimating future sales while underestimating expenses. Another is forgetting irregular costs such as annual software renewals, equipment purchases, professional services, taxes or seasonal marketing.
A budget should also be reviewed against actual performance. Comparing planned and actual figures can help identify where assumptions were inaccurate and where future budgets may need adjustment.
Budget vs Cash Flow
A business budget and a cash-flow forecast are related but not identical. A budget estimates planned income and expenses, while cash-flow planning focuses on when money is expected to enter and leave the business.
A business can show a positive budget result while still experiencing cash pressure if customer payments arrive later than major expenses are due. For more detailed planning, consider using a cash-flow calculator alongside a budget.
Important Note
This calculator is intended for general planning and educational purposes. It is not accounting, tax, investment or financial advice. Consider professional guidance for decisions with significant financial impact.
Related Tools
More Business Calculators
Cash Flow Calculator
Calculate business cash inflows and outflows.
Open Tool →Break-Even Calculator
Estimate the sales needed to cover costs.
Open Tool →Growth Rate Calculator
Calculate percentage business growth.
Open Tool →Invoice Generator
Create professional business invoices.
Open Tool →FAQ
Business Budget Calculator FAQs
Explore More Free Business Tools
Discover free calculators for cash flow, pricing, growth, sales, invoices and everyday business planning.
Browse Business Tools →