The rate reductions mean that the specialist buy-to-let lender’s core range now starts at 3.09%. The changes now see Keystone’s new green mortgage range – which launched in March and offers discounted rates to landlords with properties that have an EPC rating of C and above – start at 2.99%. As part of the overhaul, the specialist buy-to-let lender has launched a new cashback offer on loan above £200k. Upon completion, landlords will receive £750 cashback on loans between £200,000 and £500,000 and £1,000 cashback on loans between £500,001 and £1m. Elise Coole, managing director of Keystone Property Finance, said: “We are cutting our rates and launching our cashback offer, not only to ensure our range is highly competitive but also to give something back to landlords after what has been a difficult year.