Startup Cost Calculator — How Much Money Do You Need to Start a Business?
Add up the money needed to start a small business: equipment, build-out, opening inventory, licenses, deposits and launch marketing, plus months of operating reserve and a contingency buffer.
How it works
One-time costs = equipment + build-out + inventory + licenses + deposits + launch marketing + other · Operating reserve = monthly expenses × months · Total = (one-time + reserve) × (1 + contingency %)
The U.S. Small Business Administration suggests listing every one-time expense needed to open the doors and the ongoing expenses you must pay before the business earns enough to cover them. Many new businesses fail not because the idea is bad but because the cash runs out while sales build up, so a reserve of several months of operating costs and a contingency buffer for surprises are part of the real startup cost. Use the total to plan savings, loans or investment, and break it down by item to see where quotes are still missing.
Worked example
One-time costs of $15,000 + $8,000 + $6,000 + $2,500 + $4,000 + $3,000 + $1,500 = $40,000, plus 6 months × $7,000 = $42,000 of operating reserve, give $82,000. A 10% contingency adds $8,200, so the total startup capital needed is $90,200.
Sources: U.S. Small Business Administration — Calculate your startup costs
Frequently asked questions
How do I calculate startup costs for a business?
List one-time costs (equipment, build-out, inventory, licenses, deposits, launch marketing), estimate monthly operating expenses, multiply them by the months you need to reach break-even or a safe reserve, then add a contingency of about 10–20%.
How many months of expenses should I have saved?
Three to six months is a common rule, and more for businesses with long sales cycles or seasonal demand. Use your break-even forecast: the reserve should last until monthly profit turns positive.
Should I include my own salary in startup costs?
Yes, if you will rely on the business to live. Include at least the minimum you need for personal expenses in monthly operating costs, or plan separately how you will pay them.
Can startup costs be deducted from taxes?
Many tax systems let businesses deduct or amortize startup and organizational costs, but the rules and limits depend on the country. Check with a local accountant before you count on it.
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Planning estimate only — real prices, fees and results depend on your own costs, platform terms, local taxes and what your market will pay. Check the numbers against your books before you commit to a price or budget.