Free tools and checkers from Unadhi

Updated 13 Oct 2026 · Each line below is taken from the tool's own page.

Short answer: Unadhi has five free tools you can use now, with no login: a GSTR-3B late fee and interest calculator, a CA client due-date calendar generator, an EU AI Act risk-tier self-check, the EURO AI Register free edition, and a free India tax deadline calendar (.ics). They run in your browser. They are aids for your own checking, not legal or tax advice.

India: GST and compliance

GSTR-3B late fee & interest calculatorEnter due date, filing date, nil/turnover band and cash liability to get days late, CGST/SGST late fee with caps, 18% interest and total. CA client due-date calendar generator (.ics + CSV)For CA firms: enter your firm name and client list, pick GST/TDS/PF-ESI/ITR/ROC, and download a 12-month due-date calendar. No login, nothing uploaded. Free India tax deadline calendar, Oct 2026 – Mar 2027 (.ics)59 GST, TDS/TCS, advance-tax and ITR due dates, each with a 3-day reminder and the official source, plus a spreadsheet copy.

EU AI Act

EU AI Act risk-tier checkerAnswer fixed questions on your role, prohibited practices, Annex III, Annex I and Article 50, and get a starting-point risk tier with article references and dates. Runs in your browser; stores nothing. EURO AI Register (free edition)Keep a record of your AI systems, EU AI Act screening, duties by role, AI use policy and evidence, in your browser. A record-keeping tool, not proof of compliance; paid membership adds more systems.

These tools give general information and a starting point, not legal or tax advice. Check the official source before you file or decide. Unadhi is not affiliated with the GST Council, CBIC, the EU or any authority.

More free explainers: all Unadhi Guides · paid plans: Unadhi Suite

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