Women will be richer than men by 2025 and own 60% of the UK's personal wealth, a new study suggests.
Women tend to perform better in education and live longer than men
The rise, up from 48%, will be due to women performing better in education, having higher levels of single home ownership and a longer life expectancy.
Researchers found there are 24% more women millionaires aged 18 to 44 than men - 47,355 compared to 37,935.
There are also more women millionaires aged over 65, the Centre for Economics and Business Research study said.
The study, which was carried out for financial services group Liverpool Victoria, based its predictions on existing figures on personal wealth, education, home ownership and working patterns.
It drew attention to the fact that in 2004, 70% of women aged 16 to 64 were in work, compared with 56% in 1971.
Meanwhile, over the same period, the proportion of men in employment has fallen from 92% in 1971 to 80% in 2004.
Commenting on the trends, a spokeswoman for Liverpool Victoria said: "This change will come about due to the rise of a cohort of financially sophisticated younger women, adding to the traditional sources of female wealth such as marriage and inheritance."
However, Liverpool Victoria did suggest that the financial future where women were concerned was not entirely positive.
It found that women were less likely to engage in long-term financial planning than men, with women being half as likely as men to have a stakeholder pension - 4.2 million men compared with two million women.
And single women are also far less likely than the national average to have mortgage protection, employment protection or permanent health insurance.