Free online business and finance tools

Calculates French pay-as-you-earn withholding at source.

Breaks down Polish social security contributions.

Estimates net income for a Dutch freelancer (ZZP).

Models startup ownership across pre-seed, seed and Series A rounds including option pools and dilution.

Calculates annual leave balance and its cash value in Saudi Arabia.

Calculates Russian tax due on selling an apartment.

Invoice template tailored to auto repair shops with parts and labour lines.

Official Urssaf simulator for micro-entrepreneur revenue, contributions and net income.

Builds a monthly cost estimate for AWS services from the configuration you choose.

Builds a balance sheet for a for-profit or nonprofit with live preview, ratio calculations and PDF export.

Builds a customised invoice and downloads it as a PDF, with no signup.

Invoice and receipt templates (10+) that download as PDF.

Prices an option with the Cox-Ross-Rubinstein binomial model from spot, strike, rate and volatility.

Calculates overtime when an employee works at two or more pay rates in one week.

Federal Ministry of Finance calculator for German wage and income tax.

Finds the sales volume needed to cover fixed and variable costs and to hit a target profit.

Itemises brokerage, STT, taxes and other charges on trades across NSE, BSE and MCX for a Zerodha account.

Compares budgeted and actual results with colour-coded variances for business, nonprofit or church budgets.

Calculates monthly cash burn and how many months of runway remain.

Calculates monthly PIT advances for business income taxed on the tax scale.

Builds a full amortization schedule for a business loan with monthly payment and total interest.

Calculates tax on rental income from property in Mexico.

Works out the end of job protection for pregnant employees.

Portuguese payroll calculator, entry point for 13th-salary computations.