Customers transferring to Axa Self Investor will be able to claim up £750 per person to pay any exit fees levied by ceding providers.
The offer is open to new and existing investors who submit a transfer request between 1 May 2015 and 31 July 2015.
However, claims must be made within 30 days of the transfer completing and transferred funds must stay on the platform for at least 12 months.
Axa Self Investor director David Brooks says: “Self-investing platform providers should be flexible and transparent.
“We believe exit fees are old fashioned and unnecessarily punitive. In this day and age people should not be penalised for exercising their choice to seek out more appropriate products or services.
“Our transfer offer means investors will be able to escape from their existing provider and consolidate their investments to our completely clear, transparent and forward-thinking platform.”