Corkin has previously sat on the government’s alternative arrangements for Northern Ireland committee and is the technical chair of the VAT practitioners group.
She has been the “driving force” behind the firm’s indirect tax practice, including its customs declaration service.
Corkin said: “It is an honour and privilege to have been given this promotion following such a challenging year in terms of tax compliance following the end of the transitional arrangements with the EU and the coronavirus pandemic.”
The firm has also announced that Alpa Adatia has joined the company as an assistant VAT manager. Adatia spent 11 years working for HMRC as a higher executive officer, she brings to the firm a detailed knowledge and understanding of VAT and the workings of HMRC.
Alex Bottom, managing principal, added: “I would like to extend the entire firm’s congratulations to Ruth on her well-deserved promotion.
“The past 12 months have been a challenging business environment with VAT and indirect taxes very much at front of mind for businesses. Ruth’s professionalism, dedication and understanding of the needs of business is at the heart of her success.”