What is a startup cost calculator?
A startup cost calculator estimates how much money you may need to launch a business. It separates one-time setup costs from recurring monthly costs, then adds working capital and an optional contingency reserve. If you enter available funding, it also shows a funding gap or surplus.
The result is an estimate from the numbers you type. It is not a business plan, a loan decision or advice about whether you should start the business.
How to estimate startup costs
List expenses you expect to pay once during setup. Then list expenses you expect to pay each month after launch. Choose how many months of those monthly costs you want to reserve as working capital. Add a contingency percentage if you want a buffer for uncertainty. Compare the total with cash or committed funding you already have.
Use monthly amounts for recurring costs. If you only know an annual figure, divide it by 12 before you enter it. This version does not convert annual costs for you and does not mix periods automatically.
One-time startup costs
One-time startup costs are expenses generally paid before launch or only once during setup. Examples include registration, legal work, a website, equipment, an initial inventory purchase, a lease deposit and first-time branding. Leave a row at $0.00 if it does not apply. Zero rows stay in the form and are not sent anywhere.
Recurring monthly costs
Recurring monthly costs are expenses you expect to repeat after launch, such as rent, payroll, software, insurance, utilities and advertising. The calculator multiplies the monthly total by the working capital months you select. It does not treat those monthly costs as a cash runway and does not subtract future revenue.
What is working capital?
In this calculator, working capital is the amount reserved to cover recurring monthly costs for the selected number of months. The formula is the monthly recurring subtotal times the number of months. A value of 0 months is valid and means no working-capital reserve is added. Fractional months are allowed for an estimate and are not rounded before the math finishes.
How many months of working capital should you include?
Choose a period that matches your launch plan and the risk you can accept. A shorter period produces a smaller reserve. A longer period produces a larger one. There is no universal number of months for every industry or location. The default of 6 months is a starting point for the form, not a recommendation.
What is a contingency reserve?
A contingency reserve is an extra percentage applied to a selected base to help account for uncertainty. You can apply it to one-time startup costs only, or to one-time costs plus working capital. The percentage is not applied to available funding, and it is not applied twice. Turning the reserve off sets the contingency amount to $0.00.
How to calculate a startup funding gap
Estimated startup funding needed is the one-time subtotal plus working capital plus any contingency reserve. If you include available funding, the gap is how much the estimate exceeds that funding. If available funding is higher, the difference is a surplus. If the two amounts match within a tiny rounding tolerance, the plan is treated as fully funded. Coverage is available funding divided by the estimate, and only when the estimate is greater than zero.
What costs should be included?
Include the setup and monthly costs that belong in your launch plan. You can add custom rows for costs that are not in the starting list. Do not enter revenue, interest, depreciation or a loan schedule here. License fees, taxes and payroll extras are included only when you type a dollar amount. The tool does not look up rules for a state, city or legal entity.
Startup costs vs. operating expenses
Startup costs in this tool are the money estimated to get to launch, including a chosen number of months of operating expenses as working capital. Operating expenses that continue after that reserve is used are not forecasted month by month. Revenue earned before or after launch is not included, so the estimate is not a profit result and is not cash runway.
Limitations of this calculator
- Results are estimates based only on the numbers you enter.
- Taxes, depreciation, amortization and interest are not modeled.
- Revenue, sales forecasts and pre-launch income are not included.
- Loans are not evaluated beyond an optional monthly payment you type.
- Annual costs are not converted automatically.
- Inventory is not tracked by product.
- Payroll taxes and benefits are not calculated automatically.
- License and entity rules are not looked up by jurisdiction.
- Working capital here is not cash runway.
- Scenarios are not saved, exported or emailed.
- The estimate does not guarantee that you have enough capital to launch.
Frequently asked questions
What are startup costs?
Startup costs are the expenses you expect to pay to prepare a business for launch. They usually include one-time setup costs plus enough money to cover recurring monthly costs for a period you choose. This estimate is based only on the amounts you enter.
What is the difference between one-time and recurring costs?
One-time costs are generally paid before launch or only once during setup, such as deposits, equipment and initial branding. Recurring costs are expenses you expect to pay each month after launch, such as rent, software and payroll. Enter recurring amounts as monthly figures in this version.
How do I calculate working capital for a startup?
Add the monthly recurring costs you entered, then multiply that total by the number of working capital months. The result is a reserve to cover those monthly costs before launch. This calculator does not subtract expected revenue or estimate cash runway.
How many months of working capital should I include?
There is no single number that fits every plan. Choose a period that matches your launch timeline and the risk you can accept. The form starts at 6 months so you can begin an estimate. That default is not a recommended or required amount.
What is a contingency reserve?
A contingency reserve is an extra percentage added to selected startup costs to help account for uncertainty. You can apply it to one-time costs only, or to one-time costs plus working capital. It is not applied to available funding, and it is not a recommended savings target.
Should inventory be included in startup costs?
Include inventory you must buy before launch as a one-time cost. If you expect to replenish inventory every month, enter that monthly amount as a recurring cost. This version does not track inventory by product or convert annual purchases automatically.
Should payroll be included?
Include payroll and contractor costs you expect to pay each month after launch in the recurring list. A one-time hiring fee or first payment that will not repeat can go in one-time costs. The tool does not calculate employer taxes or benefits automatically.
Does this calculator include business licenses and taxes?
It includes only the amounts you type. There is a one-time row for business registration and licenses, but the tool does not look up license fees, sales tax, income tax or payroll tax for any jurisdiction.
What is a startup funding gap?
A funding gap is the amount by which estimated startup funding needed exceeds the available funding you entered. If available funding is $40,000.00 and the estimate is $52,000.00, the gap is $12,000.00. The gap is not a loan offer or a recommendation to raise capital.
What happens if my available funding is higher than the estimate?
The difference is a funding surplus based only on the costs and funding you entered. It does not mean the business has extra cash after launch, and it does not account for revenue, taxes or loan terms.
Does this calculator estimate revenue?
No. Revenue, sales forecasts and pre-launch income are out of scope. The result is a cost-and-funding view, not a profit, break-even or cash-flow forecast.
Is startup funding the same as cash runway?
No. Startup funding needed is the money estimated to launch, including one-time costs, working capital and any contingency. Cash runway estimates how long remaining cash lasts at a monthly burn rate. That is a different question and a different calculator.
Last reviewed August 23, 2026 (UTC).