James Hay Partnership more than doubled the number of Sipp sales last year, it revealed today.
The company's results, released along with parent company IFG's, showed it sold 5,071 Sipps compared to 2,469 the previous year.
It ended the year with record Q4 sales.
However, adjusted operating profit dropped from £9m to £6.7m.
James Hay's total 2013 gross inflows were £1.2bn - a 63% increase on 2012, boosted by the Modular iSipp and its assets under advice were £15.3bn.
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Chief executive Alastair Conway said: "Adjusted operating profit was impacted by continued investment in the business as we developed the necessary improvements to our infrastructure to support our growth plans, while maintaining our high service standards, expanding our product suite and enhancing our distribution capability to drive sales. "Headcount in the business increased by 15%, and we invested £3.1 million in our IT systems and controls."
He added: "Our strategic objective in James Hay Partnership is to expand the business from being a solely focused SIPP provider to being a platform with a broader capability in retirement wealth investment administration.
"Our focus will remain on the primary distribution channel of financial advisers which is currently serviced by relationship-based teams coupled with high end technology."