Business Calculators
The business category lists 10 calculators for planning and analyzing a business. All run in your browser with instant, printable results. Estimates only — not financial advice.
9 of them run inside TaxEase; ROI now opens on ZTools (same developer, also free — the link below redirects there).
| Calculator | What it estimates | Open |
|---|---|---|
| Break-Even Analysis | Units and revenue needed to cover costs, plus contribution margin | Open |
| Business Loan | Monthly payment, total interest, and total repayment for a business loan | Open |
| ROI | Return on investment and annualized ROI | Open |
| Profit Margin | Profit amount, margin, and markup from revenue and cost | Open |
| Cash Flow | Net cash flow from your income sources and expenses | Open |
| Startup Cost | Total cash to launch — one-time costs plus an operating buffer | Open |
| Valuation | Estimated business value | Open |
| Franchise Fee | Initial fee, royalties, and marketing-fund costs over time | Open |
| Inventory Turnover | Turnover ratio and days inventory outstanding | Open |
| Operating Expense | Operating expense ratio as a percent of revenue | Open |
Frequently asked questions
What is the contribution margin in the break-even tool?
It is the selling price per unit minus the variable cost per unit — the amount each unit contributes toward fixed costs and profit. The break-even point is reached when total contribution margin equals fixed costs.
Can I enter multiple income and expense lines?
Yes. The Cash Flow and Startup Cost calculators let you add and remove line items so the totals reflect your real categories.