The Royal Bank of Scotland Group (RBS) said it expected less growth in its non-interest units, which include general insurance, than income growth for the whole group.
RBS will be holding meetings with analysts and investors to discuss the future of its non-interest income.
It said it would hold the discussions ahead if its close period for 31 December 2004.
The company said non-interest incomes reflected strong growth but were not expected to meet the growth rates of the group.