If an offer is not made within the committed timescale, customers will receive £100.
The improved service offering also introduces the aim to provide a decision in principle to the broker within 48 hours of a case being submitted.
As well as quicker decisions, the lender said it is aiming to contact brokers at each stage of the process.
Brokers will receive a decision in principle within 48 hours of a case being submitted and, if any more documents are needed to progress the case, they will let brokers know.
Terms and conditions apply to the 10-day commitment that can be found on the bank’s intermediary website, and applies to Clydesdale Bank and Yorkshire Bank products.
Sarah Green, head of intermediaries, said: “We’ve listened to what our brokers have been telling us and have been working hard to improve our service.
“We know that getting things done quickly can make all the difference when it comes to helping customers. That’s why we now aim to issue an offer in 10 days of receiving a fully packaged application, or we’ll give customers £100 if they go on to complete with us.”
She added: “Our partners are a key component of our mortgage business and we deliver the majority of our mortgage business through those partnerships.”
