Startup Cost Calculator
This free startup cost calculator helps you estimate how much money you need to launch your business. Add your one-time launch costs and monthly operating costs to see your total startup capital and the cash runway buffer that keeps you solvent until revenue ramps up.
One-time costs
What you pay once to open your doors.
Monthly operating costs
Recurring costs you pay every month while you ramp revenue.
How many months of operating costs you want in the bank (1–24).
Total startup capital needed
$181,300
One-time launch costs plus a 6-month cash runway buffer.
- One-time total
- $65,500
- Monthly operating total
- $19,300
- Runway buffer ($19,300 × 6)
- $115,800
- Total startup capital
- $181,300
One-time costs vs. cash runway buffer
How this calculator works
Your total startup costs are made up of two parts: the one-time costs you pay once to open your doors, and a cash runway buffer that covers your monthly operating costs until the business earns enough to pay for itself. New businesses rarely turn a profit on day one, so the buffer is what gives you time to find customers without running out of cash.
The calculator uses a simple formula:
Total startup capital = one-time costs + (monthly operating costs × months of runway)
First it adds up every one-time cost — for example equipment, build-out, licenses, security deposits, and opening inventory. Then it sums your recurring monthly costs such as rent, payroll, utilities, insurance, and software. It multiplies that monthly total by the number of months of runway you choose to get your cash buffer, and adds the two figures together for the total capital you should plan to raise or set aside.
For example, if your one-time costs are $65,000, your monthly operating costs are $19,300, and you want six months of runway, your runway buffer is $115,800 and your total startup capital is about $180,800. Adjust any input and every number updates instantly so you can compare a lean launch against a better-funded one.
These figures are estimates to help you plan and budget — they are not financial or tax advice. When you are ready to turn the numbers into a fundable plan, our business plan financials hub walks through projections in detail, and our break-even calculator shows the sales volume you need to cover those costs.
Frequently asked questions
- What are startup costs?
- Startup costs are the expenses you incur to get a new business open and running. They fall into two groups: one-time costs you pay once to launch (such as equipment, build-out, licenses, security deposits, and initial inventory) and the operating costs you keep paying every month (such as rent, payroll, utilities, and software). A complete startup budget covers both your one-time launch costs and enough cash to operate until revenue catches up.
- How much cash runway should I include?
- Cash runway is the number of months of operating costs you keep in the bank as a buffer while sales ramp up. Many founders plan for roughly three to six months of expenses, and businesses that take longer to reach steady revenue often target twelve months or more. The right number depends on how quickly you expect customers and cash flow to arrive; this calculator lets you model anywhere from 1 to 24 months so you can stress-test conservative and aggressive scenarios.
- How much money do I need to start a business?
- The amount you need is your total one-time launch costs plus a cash runway buffer to cover monthly operating costs until the business is self-sustaining. A home-based service business may need only a few thousand dollars, while a restaurant or retail location with build-out, equipment, and payroll can require six figures. Enter your own figures above and the calculator returns a personalized total startup capital estimate rather than a generic number.
- Are startup costs tax deductible?
- According to the IRS, certain business startup and organizational costs may be deductible, and a portion can sometimes be deducted in your first year with the remainder amortized over time. The specific rules, limits, and eligibility depend on your situation, so treat this calculator as a planning estimate and confirm the tax treatment of your startup costs with a qualified tax professional or the current IRS guidance.
- What's the difference between one-time and monthly costs?
- One-time costs are paid once to open the business — for example equipment, renovation, licenses, and opening inventory — and do not repeat each month. Monthly (operating) costs recur for as long as you are in business, such as rent, payroll, insurance, and subscriptions. The distinction matters because monthly costs are what your cash runway buffer has to cover until revenue grows, while one-time costs are a fixed upfront outlay.
Turn your numbers into a fundable business plan
Once you know what it costs to launch, build the plan that gets you funded. Optimus creates a complete, investor-ready business plan with detailed financials in minutes.
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