New registration will have to be applied for. Cancellation of registration will have to be applied for the old GSTIN after the transfer of the ITC.
ITC in the hands of the old GSTIN will be transferred to the new GSTIN.
The successor or legal will first submit the death certificate of the sole proprietor and the succession certificate to the GST officer as evidence. The proper officer will then add the successor as the authorised signatory for the deceased sole proprietor.
A temporary username and password will be sent to the e-mail address of the newly added authorised signatory. Using these temporary credentials and the first-time login link, the successor can now login to the account of the sole proprietor. Upon successful login, he will have to file Form GST ITC-02 using the same registration, i.e. registration of the deceased sole proprietor. The form has to be filed after filling in the relevant details.
To complete the transfer of ITC, the successor has to accept such transfer using his registration. After the transfer is complete, he can now proceed with the cancellation of registration of the deceased sole proprietor.