Curtis Banks entered the Sipp and SSAS markets in June.
The firm, set up by actuary Rupert Curtis and pensions specialist Chris Banks, is targeting the middle market as well as high-net worth clients.
It has also revealed plans to acquire SSAS business from other providers.
Business development director Steve Hart says: “We are delighted to be a product partner with Ascentric and this fits in seamlessly with our Sipp proposition.
“Quality independent financial advisers are the key distribution channel for the Curtis Banks Sipp and our product is designed to provide them with maximum choice and a truly open architecture.”