Members can now earn 0.42 per cent of the advance for loans of under £150,000, and 0.42 per cent of the advance for loans of £150,001 or above.
Nick Baxter, director of Mortgage Promotions, said: "We have always told our members that we aim to compete with other clubs and networks on price. Part of this is maintaining the competitiveness of the fees that we pass to members. The new amount that we pass to members for large loans with Standard Life Bank is evidence that we deliver what we preach."