The company posted a pre-tax loss of £30m, an improvement on the £33.5m reported last year.
Operating expenses fell 7% over the year to £41m from £44.4m in 2011, while turnover increased 33% to £21.9m from £16.5m.
The company is the parent of Axa’s direct platform, Axa Self Investor, and administrates Axa’s pension schemes and Isas.
In a statement the firm said: “During 2012, APS invested in excess of £12m in platform development and enhancements including the launch of the Axa Self Investor platform. The Elevate platform was also enhanced to meet a number of legal and regulatory changes including developments required by the RDR.”
This week Axa Investment Managers revealed it was to invest £10bn in infrastucture debt.