Answer

1. F

   Facts

   Interest runs from the dates tax would have been due had you been registered on time, until payment.

2. P

   Provisions and law

   • Sec 50(1), CGST Act 2017Interest is payable on tax paid late for the period of delay at the notified rate (18 percent a year); on a late return it is levied only on the portion paid in cash, except where proceedings under Sec 73, 74 or 74A have started.
   • Sec 25(1), CGST Act 2017Apply for registration within 30 days of becoming liable, in every State or UT where liable.
   • Sec 122(1), CGST Act 2017Penalty of ₹10,000 or the tax involved, whichever is higher, for listed offences such as supplying without registration, wrong invoices or wrongful ITC.
3. A

   Analysis

   If you should have registered in October and paid ₹20,000 tax each month from November, interest runs on each month's tax from its due date. Compute month-wise rather than one lump sum. Paying voluntarily early limits interest and penalty exposure.

4. C

   Conclusion

   1. 1Fix the date you became liable.
   2. 2Compute monthly tax from then.
   3. 3Compute interest on each month from its due date.
   4. 4Pay through DRC-03 or returns.

General guidance from TaxSavvy’s library of money processes. Laws change; your Savvy confirms the answer on your exact case before anything is filed.