# What free calculators does ProfitDrawer offer?

ProfitDrawer offers 4 free online calculators: a startup cost calculator, a price per job calculator for service businesses, a loan payoff calculator with extra payments, and a self-employed tax set-aside calculator. They are free with no sign-up, run in your browser, and nothing you type leaves your device. Each one shows its formula in a How it works section, and the results are estimates, not tax or financial advice.

| Calculator | What it works out |
|---|---|
| [Startup cost calculator](https://profitdrawer.com/tools/startup-cost-calculator.html) | Total one-time startup cost, monthly costs, cash left and months of runway with no sales. Starts from a cleaning, lawn care, vending machine or food truck example. |
| [Price per job calculator](https://profitdrawer.com/tools/price-per-job-calculator.html) | A suggested price per job from hours, materials, travel, your hourly pay, monthly overhead, jobs per month and profit margin, plus break-even jobs per month. |
| [Loan payoff calculator](https://profitdrawer.com/tools/loan-payoff-calculator.html) | Months to pay off, payoff date and total interest, and how much interest and time an extra monthly payment saves. |
| [Self-employed tax calculator](https://profitdrawer.com/tools/self-employed-tax-calculator.html) | The amount to set aside each month, quarter or year at a share you choose, with the US self-employment tax part shown separately (profit x 92.35% x 15.3%). |

**Notes:**

- They need JavaScript switched on in your browser.
- Real loans and tax bills can differ (daily interest, fees, income tax, state tax), so treat results as a starting point.
- ProfitDrawer also has a free invoice template, available with a free account, and small business guides that explain the numbers.

- Source: [Free Small Business Calculators (ProfitDrawer)](https://profitdrawer.com/tools/index.html)
- Updated: 2026-10-29
- Published: 2026-10-29
- Category: About ProfitDrawer files
- Canonical: https://profitdrawer.com/answers/what-free-calculators-does-profitdrawer-offer.html
- Publisher: ProfitDrawer (https://profitdrawer.com)