The wealth management company set portfolio charges at 0.25% for £1m plus, 0.15% for £2.5m plus and 0.1% for portfolios over £5m.
Axa said its Elevate platform has been designed so clients are always charged the lowest price they qualify for on their whole investment.
The reduced charges will be available to all existing and new clients.
They will also apply to the group’s family linked accounts service. This means clients who link family accounts can see their charges fall even further by adding the value of their portfolios together and qualifying for a lower price band.
David Thompson, managing director of Elevate, Axa Wealth, said: “Given the strength of the business we are now in a position to make the charges for larger portfolios amongst the most competitive in the market and offer lower costs to advisers and their clients.
“We are able to combine the best of a rapidly growing platform, free of the legacy issues of others, with a commitment towards efficiency through functionality such as back office integration and refunding switches along with a wide investment choice including stockbroking and direct asset trading.”
All other charges for investments under £1m will remain the same.
In February, Axa Wealth reported a sales growth of more than 10% despite anticipated headwinds caused by the introduction of the new Retail Distribution Review legislation in the UK.
It said sales had increased 13% from £699m in 2013 to £790m last year.