Starting a business means wearing a CFO hat from day one. These calculators help you price your services, understand your unit economics, know when you'll break even, and build toward a business worth something.
How to use this guide: Starting a business means wearing a CFO hat from day one. This guide covers the financial decisions that sink most new businesses — pricing, break-even, entity selection, and the unit economics that determine whether your model is actually viable.
Break-even is the point where revenue covers all costs — fixed and variable — and you're no longer losing money. Every business should know this number before spending a dollar on marketing. Break-even units = Fixed Costs ÷ (Price per Unit − Variable Cost per Unit). If you run a service business with $4,000/month in fixed costs and earn $200 profit per client after variable expenses, you need 20 clients to break even. Every client beyond that is profit.
Most new businesses fail not because the product is bad but because the unit economics never worked — the cost to acquire a customer is too high relative to what that customer generates. Understanding your Customer Acquisition Cost (CAC) and Lifetime Value (LTV) before scaling is what separates businesses that grow profitably from those that grow themselves into bankruptcy.
Most new businesses should start as a single-member LLC — it provides liability protection with minimal overhead. The S-Corp conversation becomes relevant once net profit consistently exceeds $50,000–$80,000/year. At that level, electing S-Corp status lets you split income between a "reasonable salary" (subject to self-employment tax) and distributions (not subject to SE tax), potentially saving $5,000–$15,000/year. Below that threshold, the S-Corp's additional compliance costs (separate payroll, more complex accounting) typically outweigh the tax savings.
The 1099 vs W-2 question matters most when you're considering whether to hire employees or contractors. Employees cost roughly 25–30% more than their salary in payroll taxes, benefits, and overhead. Contractors are simpler but come with misclassification risk — the IRS has specific criteria for what constitutes an independent contractor, and misclassifying employees as contractors carries significant penalties.
The most common pricing mistake is converting an employee salary to an equivalent hourly rate without accounting for what employment actually provides. A salaried employee at $80,000 costs their employer closer to $110,000 — the difference covers payroll taxes, benefits, paid time off, and overhead. As a self-employed business owner, you pay all of that yourself. Add self-employment tax (15.3%), health insurance ($400–800/month), zero paid vacation, and 20–30% of your time on non-billable work — and your rate needs to reflect the true cost of running the business, not just your salary target.
Startup costs vary dramatically by business type. Understanding the typical range helps you plan realistically and avoid running out of cash in the critical first year.
| Business Type | Typical Startup Costs | Time to Profitability | Key Expense |
|---|---|---|---|
| Freelance / Consulting | $500–$5,000 | 1–3 months | Website, insurance, software |
| E-commerce (dropship) | $2,000–$10,000 | 3–6 months | Inventory, ads, platform fees |
| SaaS / Software | $10,000–$100,000 | 12–24 months | Development, hosting, marketing |
| Service business (cleaning, landscaping) | $5,000–$25,000 | 2–6 months | Equipment, insurance, vehicle |
| Retail store | $50,000–$250,000 | 12–24 months | Lease, buildout, inventory |
| Restaurant | $100,000–$500,000+ | 18–36 months | Lease, equipment, buildout, permits |
| Food truck | $50,000–$150,000 | 6–12 months | Truck, equipment, permits |
| Entity | Best For | Tax Treatment | Annual Cost |
|---|---|---|---|
| Sole Proprietorship | Testing an idea, side projects | Schedule C, self-employment tax on all profit | $0–$100 |
| Single-Member LLC | Most small businesses | Same as sole prop + liability protection | $50–$800 (state fees) |
| LLC + S-Corp Election | Profitable businesses ($60K+ profit) | Salary + distributions, saves SE tax | $2,000–$4,000 |
| C-Corp | Raising VC/angel investment | Corporate tax + dividend tax (double taxation) | $2,000–$5,000 |
Annual costs include state filing fees, registered agent fees, and additional accounting/payroll costs. Consult a CPA and attorney for your specific situation.
Most small businesses should start as a single-member LLC (simplest structure with liability protection) and consider the S-Corp tax election once net profit consistently exceeds $60,000–$80,000 per year. See our detailed analysis: LLC vs S-Corp: At What Income Does the Switch Make Sense?
Separate your finances immediately. Open a dedicated business bank account and credit card. Mixing personal and business expenses creates accounting headaches and can compromise your LLC's liability protection.
Set aside 25–30% of revenue for taxes. As a self-employed person, you owe both income tax and self-employment tax (15.3%). Quarterly estimated tax payments are due in April, June, September, and January. Failing to pay quarterly results in underpayment penalties.
Track every expense from day one. Use accounting software (QuickBooks, Wave, or FreshBooks) rather than spreadsheets. Categorize expenses correctly. Many deductible expenses are missed simply because they were not tracked: home office, vehicle mileage, software subscriptions, professional development, health insurance premiums (deductible for self-employed), and equipment purchases.
Get appropriate insurance. General liability insurance ($400–$1,500/year for most service businesses) protects against claims. Professional liability (errors and omissions) is essential for consultants and advisors. Workers' compensation is required in most states once you hire employees.