Free online business and finance tools

Shows net pay under the Dutch 30 percent ruling for expats.

Builds an invoice from a plain-English description or a form, with templates saved in the browser.

Calculates net income for a French auto-entrepreneur after contributions and tax.

Loan and mortgage calculator with full amortization schedule, charts, CSV export and shareable links.

Estimates net income for a self-employed B2B contractor in Poland.

Calculates Dutch net pay including loonheffing, holiday pay and labour credit.

Estimates net income for a Spanish autónomo after social security and tax.

Calculates Spanish personal income tax by bracket.

Computes the extra pay installments and their effect on monthly pay.

Calculates the IRPF withholding rate on a salary.

Invoices, quotes, purchase orders and credit notes with autosave, no account and local processing.

Calculates net pay for a Polish umowa o pracę after ZUS, health and PIT.

Twelve finance calculators in GBP, including compound interest, savings goal and mortgage, that work offline.

Shows employee INPS social security contributions.

Invoice maker with 10 templates, multi-currency support and tax presets that works wholly in the browser.

Monthly Indonesian take-home pay after PPh 21 and BPJS contributions; the site says data stays in the browser.

Calculates net income from a Polish umowa zlecenie.

Shows minimum wage by age and hours in the Netherlands.

Calculates Polish personal income tax.

Estimates the activity bonus for French workers.

Group expense splitter supporting equal or percentage shares, with offline local storage and CSV or JSON export.

Calculates TFR from gross pay and years of service, with all work done in the browser per the site.

Money calculators including a 50/30/20 budget split that run in the browser, with optional sign-in.

Computes the Italian 13th month payment.