Support

Email info@nanolabshq.com. We aim to reply within 3 business days (India).

NanoLabs Access

To report a wrong or confusing result, tell us the web address you checked (public pages only), the rule name shown in the report and what you expected. To join the paid-plan waitlist, email us with the subject "Access waitlist". See the NanoLabs Access page for what automated checks can and cannot find.

India Tax & GST Helper: report a wrong rate or calculation

Please include:

• the tool name (for example calculate_income_tax or generate_gst_invoice) and the financial year;
• the non-personal inputs (amounts, section or HSN/SAC code only);
• the official source (notification, section or circular) you believe applies.

Please do not send PAN, Aadhaar, card or bank details, passwords or OTPs.

India Tax & GST Helper: known limits

• Estimates only. Every answer shows the rules used and whether each was verified.
• HSN/SAC rates cover a small curated list and are always marked "verify".
• GSTIN checks are offline (format and checksum); registration is not checked.
• Invoices are convenience documents, not e-invoices.

Official tax and GST sources

• Income Tax Department: incometax.gov.in, incometaxindia.gov.in
• Union Budget: indiabudget.gov.in
• GST: gst.gov.in, CBIC tax information portal, e-invoice portal

Privacy and grievances

See the privacy policy. Write to info@nanolabshq.com with the subject "Privacy" or "Grievance".

Who we are

NanoLabs HQ is a brand of Mercury Online Solutions Pvt Ltd (CIN U72900DL2010PTC204781).

• Registered office: A-403, Hind Apartments, Plot No. 12, Sector 5, Dwarka, Delhi 110075, India
• Correspondence address: A103, Enigma, Sector 110, Dwarka Expressway, Gurugram, Haryana 122018, India
• Grievance Officer: Gulshan Mehta, info@nanolabshq.com