SDLT additional 3% when owning investment property

Hi, I wanted to get some confirmation my thinking is correct. I currently own a BTL property let on an AST, along with my main residence. I wanted to confirm that if I was to move my main residence that I would be not liable for the additional 3% SDLT on the transaction. I have previously lived in my investment property (7 years ago) however, I have no intention of ever returning to live in the property as is solely an investment. The investment property has always been let on an AST since I left the property. If any further clarification is needed please let me know Many thanks

Hi
Thank you for your question.
Stamp duty is not covered in this forum.
You should contact the HMRC stamp duty taxes line - 0300 200 3510.
I have attached some guidance that may go some way to helping you find your answer.
Stamp Duty Land Tax
Introduction to Stamp Duty Land Tax (SDLT): Contents