Robert McLister·General·May 2, 2009All-in-One Mortgage All-in-one mortgages let you co-mingle savings and a mortgage in a single account. Your savings reduces your mortgage balance so that you’re charged less interest. Interest on all-in-one mortgages is usually calculated daily. That ensures deposits into the account (like your paycheque) immediately reduce your debt to save more interest. Like news like this?Join our CMT Updates list and get the latest news as it happens. Unsubscribe anytime. SUBSCRIBE! Thank you for subscribing. One more step: Please confirm your subscription via the email sent to you.