Aegon UK is raising fund charges on 82 insured funds across the Aegon Retirement Choices platform and within One Retirement.
Fund charges on 82 of the 302 insured funds will rise by between 0.05% and 0.15% in order to "reflect the costs of looking after the funds" after a review was carried out.
Charges on lifestyle funds held on the platform will remain unchanged.
Aegon is currently in the process of notifying affected customers and advisers of the changes which will come into effect in mid-December.
Aegon UK investment director Nick Dixon said: "After these changes, the funds and platform cost remains very competitive - in the most competitive quartile vs. similar funds.
"Our award winning platform continues to offer leading value in the market."
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