Free Business & Finance Tools: Margins, Pricing & Calculations

Discover our collection of free business and finance tools for entrepreneurs, freelancers and companies. Calculate margins, estimate payment fees (Stripe, PayPal), analyze profitability and optimize pricing strategies. All tools work instantly in your browser with no signup.

9 free tools

Payroll Portage Simulator 2026

Calculate your net salary in payroll portage from your daily rate. Compare with auto-entrepreneur and SASU. Find the best portage company among 10+ establishments. Free for consultants and freelancers.

Bank Comparison 2026

Compare 20+ French banks (traditional, online, neobanks) and save up to €300/year on banking fees. Free and no commitment.

Professional Invoice Generator 2026

Create compliant professional invoices for free. Automatic VAT calculation, legal mentions, PDF export, design templates.

Restaurant Margin Calculator

Calculate gross and net margins, multiplier coefficient and restaurant profitability

Micro-Business Simulator

Calculate social contributions, taxes and net income as a micro-entrepreneur

Stripe Fees Calculator

Calculate Stripe transaction fees and net amount you'll receive

PayPal Fees Calculator

Calculate PayPal commissions based on transaction type and currency

Airbnb Income Calculator

Estimate your Airbnb income, expenses and monthly/annual net profit

Popular

Margin Calculator

Calculez easily votre marge, taux de marge et prix de vente à partir du coût d'achat.

Why Use Our Online Business Tools?

Business tools help entrepreneurs and freelancers make better financial decisions quickly. Our free tools allow you to calculate margins, estimate payment fees and analyze business profitability.

Margin and Profitability Calculations

Our margin calculators help determine your gross and net profit quickly. Enter your cost price and selling price to see your margin percentage and real profit. Perfect for e-commerce stores, restaurants and freelancers.

Payment Fee Simulation

Platforms like Stripe and PayPal charge transaction fees. Our simulators estimate those costs so you can adjust pricing and maintain profitability.

Pricing Optimization

Setting the right price is critical for business success. With our calculators you can simulate pricing strategies and visualize their impact on revenue and margins.

Security and Privacy

All business tools run with 100% local browser processing. Your financial data is never sent to our servers, ensuring maximum privacy.

Frequently Asked Questions

Gross margin is calculated using the formula: (Selling price − Cost price) / Selling price × 100. For example, if a product costs $10 and sells for $20, the margin is 50%. Our calculators automate this instantly.

Yes, our simulators include common payment platform fees to estimate your real net revenue after transaction costs.

No. All calculations are performed directly in your browser. No financial data is transmitted or stored on our servers.

Can't find the tool you need?

We regularly add new free tools. Feel free to suggest a tool.

Last updated: March 13, 2026

Created on: February 10, 2024