Homebuyers’ “typical mortgage payment” has climbed about 10 percent in 2017 and may climb another 11 percent in 2018, according to a new analysis from CoreLogic. Company analysts attributed the payment change to rising mortgage rates over the past year. Typical mortgage payment (TMP) is a mortgage-rate-adjusted monthly payment based on each month’s median home-sale price. It is calculated using Freddie Mac’s average rate on a 30-year, fixed-rate mortgage with ...