Free tools
Seven calculators that run in the browser. Each reproduces its workbook's verified figures; the workbook is the upsell, the tool is free.
Everything runs in your browser. Nothing you type leaves the page.
Each tool is checked against the same worked cases as the Excel file it comes from.
Each output names the article or method it applies.
The AI Act classifier, the CBAM estimator and the UAE Corporate Tax computation answer JSON at /api/v1/: 25 calls a day free, unlimited with a $19 a month key. See the API page.
All tools
Answer the questions and get the risk class, the obligation set, the date it applies and the fine ceiling under Regulation (EU) 2024/1689. Free for one system; a $19 key unlocks unlimited systems and CSV export.
Small Business Relief, the 0% band, QFZP and the interest cap, reproducing the workbook's verified cases.
Which of your activities are described in Annex I of the Climate Delegated Regulation, and the eligible share of turnover, CapEx and OpEx.
Certificate cost per import line for 2026 to 2034 with the free-allocation phase-out.
SAFE and convertible note conversion, option pool top-up, dilution, exit waterfall.
Cash-out date, break-even and scenarios from a headcount plan.
Location-based and market-based Scope 2 per site from grid factors, contracts, certificates and the residual mix, the pair ESRS E1-6 paragraph 49 requires.