How do i run the ownership without changing the gst?

You need to file for fresh registration.
Registration to be done by successor: As per section 22(3) of the CGST Act, from the date of such succession, you have to file application in FORM GST REG-01 electronically in the portal by mentioning the reason to obtain Registration as death of the proprietor. A death certificate all along with all other related documents to be filled.

A sole proprietorship has no separate identity than the proprietor himself. GST Online Registration is obtained based on the PAN only. In your case since the proprietor is no more, the PAN is not valid anymore and hence so is GST Registration. You need to take a new GST Registration but before that you need to surrender the previous GST Registration that was taken based on your father’s PAN. Once, it is surrendered you can take the new GST Registration and here you can keep the tradename as it is. This shall help you maintain the brand that was in use.

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