In its first quarter of 2013 results today, the firm said retail passive gross funds flows had increased by 40 per cent.
Sales of savings increased by 20 per cent to £366m with assets under administration totaling £74bn, up from £70bn at the end of 2012.
The firm said it expected this would increase to £100bn by the end of 2013 thanks to the firm's acquisition of Cofunds.
Legal & General Investments, a corporate member of the Institute of Financial Planning, saw net inflows of £5.5bn, up from £2.6bn in the first quarter of 2012, which brought assets under management to £441bn.
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Workplace pension sales reached £202m due to auto-enrolment. The firm said it had auto-enrolled 120,000 people during the first quarter with an opt-out rate of less than 10 per cent. This bought the total number of members to 528,000 with an opt-out rate of less than 10 per cent.
Individual annuities were up 51 per cent to £406m from £268m at the same period in 2012.
Nigel Wilson, group chief executive, said: "Legal & General has shown it can perform strongly, delivering cash, earnings and dividend growth across the economic cycle. The outlook for the business is strong, and will improve through broader economic growth and further international expansion.
"We are positive about the outlook for our digital platforms and retail funds which are well placed to benefit from regulatory change."

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