The move is designed to realign the lender's total range with the rest of the market. Fees will remain the same for NatWest buy-to-let products.
RBS plans to plough the extra money back into its business to provide longer term benefits for brokers such as better products and processes.
Graham Felstead, head of corporate accounts, RBS Intermediary Partners, explained: “As part of our drive to build a sustainable and robust business for the 21st century we have reviewed all aspects of our business model. We have a desire to make greater investment in our products, our criteria and technology to make it a more attractive proposition overall for brokers to do business with us.
"We recognised that our procuration fees were ‘out of sync’ with the majority of the industry so by realigning them and reducing the costs of acquisition we will be able to provide better products and give brokers slicker access to them."
Felstead added that the lender was keen to remunerate brokers 'where there is mutual added value in the overall relationship'.
Procuration fees for The One account’s current account mortgage are to be adjusted to 0.6 per cent.