Startup Cost Calculator
Calculate one-time and recurring startup costs.
About this calculator
This calculator separates the money a new business needs into two very different categories: one-time launch costs that get spent once (equipment, a lease deposit, opening inventory, legal setup, initial marketing) and an ongoing Operating Cushion sized as a multiple of Monthly Overhead. Adding those two pieces together produces the Total Startup Capital Needed — the number most founders underestimate, because they budget the one-time purchases carefully but forget that revenue rarely covers expenses from day one, leaving a gap the cushion is meant to close. Monthly Overhead alone drives Monthly Burn Rate, Quarterly Burn, and Annual Overhead directly, since those three figures are just that same monthly number scaled by time rather than derived from anything else you enter.
Runway (months) shows how long the total startup capital would last if overhead were the only thing draining it — a useful gut-check for whether the cushion is actually big enough. What it does not account for: any revenue ramping in during those early months (which would extend real runway beyond this estimate), financing costs on borrowed capital, or ongoing costs that grow over time rather than staying flat at today's Monthly Overhead figure.
Inputs
Results
Total Startup Capital Needed
$86,000.00
≈ 8 years of state college
How to Use This Calculator
- Enter your one-time startup expenses: Equipment & Supplies, Lease Deposit, Initial Inventory, Legal & Professional Fees, and Initial Marketing.
- Enter your Monthly Overhead — recurring costs like rent, utilities, insurance, and payroll.
- Set the Operating Cushion — how many months of overhead you want held in reserve.
- Review the Total Startup Capital Needed, along with the One-Time Costs and Operating Cushion that make it up.
- Check the Monthly Burn Rate, Quarterly Burn, Annual Overhead, and Runway (months) to see how long your startup capital will last.
How the result changes with Monthly Overhead
| Monthly Overhead | Total Startup Capital Needed |
|---|---|
| $4,000.00 | $62,000.00 |
| $6,000.00 | $74,000.00 |
| $12,000.00 | $110,000.00 |
| $20,000.00 | $158,000.00 |
What each input means
- Equipment & Supplies
- Equipment, furniture, technology purchases.
- Lease Deposit
- Security deposit and first/last month rent.
- Initial Inventory
- Initial inventory or supplies purchase.
- Legal & Professional Fees
- Incorporation, licenses, accounting setup.
- Initial Marketing
- Website, branding, launch marketing.
- Monthly Overhead
- Monthly fixed costs (rent, utilities, insurance, payroll).
- Operating Cushion
- Months of operating expenses to have in reserve.
How this is calculated
Worked example, using the default values
- Identify Input Parameters7 parametersEquipment & Supplies = 15000, Lease Deposit = 5000, Initial Inventory = 10000, Legal & Professional Fees = 3000, Initial Marketing = 5000, Monthly Overhead = 8000, Operating Cushion = 6 = 7 input(s) provided
- Calculate Total Startup Capital NeededTotal Startup Capital Needed86000 = $86,000
- Calculate One-Time CostsOne-Time Costs38000 = $38,000
- Calculate Operating CushionOperating Cushion48000 = $48,000
Engine last updated . Checked against 1 independently-derived test — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.
Frequently Asked Questions
Why are one-time costs and Operating Cushion tracked separately instead of just one total?
Because they behave completely differently in practice: one-time costs (equipment, lease deposit, inventory, legal fees, marketing) are spent once at launch and never recur, while the Operating Cushion exists specifically to cover Monthly Overhead for a set number of months while the business ramps up revenue. Keeping them separate lets you see exactly how much of your total ask is a one-time purchase versus a safety margin for the slow early months.
What determines the size of the Operating Cushion?
The Operating Cushion is Monthly Overhead multiplied directly by however many months of reserve you set — so doubling either the monthly overhead figure or the number of cushion months doubles the cushion. Neither the one-time cost inputs (equipment, inventory, legal fees) nor anything else in the calculator changes this figure; it responds only to those two inputs.
Does the calculator assume the business earns any revenue during the cushion period?
No — Runway (months), Monthly Burn Rate, and the Operating Cushion all treat Monthly Overhead as a pure cash outflow with nothing offsetting it, which is a deliberately conservative assumption. If the business generates real revenue during that period, actual runway will run longer than this estimate, but the calculator has no way to know how much revenue to expect, so it does not try to guess.
Why does Legal & Professional Fees barely move the Total Startup Capital Needed?
Legal and professional fees are typically the smallest of the five one-time cost categories relative to equipment, inventory, and the operating cushion itself, so a change to that single line item has a proportionally small effect on the total even though it is a real, necessary cost. It is still added in fully — it simply carries less weight in the total than larger categories like equipment or the multi-month cushion.
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