The cashback offering will be available across all standard and specialist products from today.
This cashback incentive will now offer up to £3,750 cashback on loans between £750,001 and £1m and a minimum cashback of £250 on loans between £50,000 and £125,000.
Sales and marketing director, Phil Riches (pictured) said: “Having received such positive feedback for our cashback range we had seen a need to increase cashbacks for larger loans.
“Following our rate reduction in May we are committed to assisting brokers to find the best buy to let mortgages for their clients. Which is why this new cashback offering will be available across all Keystone products.’’
The product ranges remain available to both individuals and limited companies.