GST filing requirement for more than 1 company with different turnovers?

If you operate multiple sole proprietorship businesses under the same PAN, you need to consider GST filing for all of them. Even if one business has sales below the threshold (e.g., under 10 lakhs), it still needs to be declared in your GST returns alongside a business exceeding the threshold (e.g., over 40 lakhs). This is because GST registration is PAN-based, meaning all businesses linked to that PAN are consolidated for filing purposes.