Free business calculators and reference tables for founders and freelancers.
Each tool runs in your browser and does not store what you enter.
Company and tax
- Where to register a company: 23 jurisdictions compared on corporate tax, state fees, minimum capital, remote setup and annual filings.
- Company filing deadlines calculator: enter your year end and get the dates for accounts, tax returns and payments in 16 jurisdictions.
- VAT registration thresholds: the small-business VAT limits and standard rates in the 27 EU countries, the UK, Norway and Switzerland.
Cash and savings
- Cash runway calculator: how many months your business cash lasts, and the month it falls below your buffer.
- Emergency fund calculator for irregular income: a savings target built from your own lean months.
Investing
- Fund fee calculator: what an ongoing charge costs over 10, 20 or 30 years.
- Leveraged ETF calculator: how daily resets and volatility change a 2x, 3x or inverse fund’s return.
The tools calculate from what you enter and from official rules we link on each page. They are general information, not tax, legal or investment advice.