PMT
PennyMac Mortgage Investment Trust
stock NYSE

The move doesn't actually seem a huge difference in the big picture. The value of giving up the 3% mortgage (Excel PMT function for 3%, 23 yrs, $370 k, Excel PV fundtion for that PMT=$256k) is around, $113k pretax. And the house value difference mentioned is $50>$250k. Substantial but not on life changing scale by itself. Another comment mentioned that $36k extra a year wipes out, doesn't reduce, savings after retirement account maxxing. But $36k after maxxing isn't huge to beging with at that income by 'FIRE at all costs' standards. OTOH by normal well off US standards just consistently maxxing retirement accounts is healthy savings Or another way of looking at would be why doesn't OP save more now? But I know (from grown kids in not totally different situations) how high expectations are now of the 'upper middle class' lifesteyle in terms of spending on kids, vacations, cars etc. OP is not a 'mllionaire next door' type super saver and would be moving further from it. But it's not a huge change especially if the new house comes out near the bottom of the $0.8-$1mil range.

The move doesn't actually seem a huge difference in the big picture. The value of giving up the 3% mortgage (Excel PMT function for 3%, 23 yrs, $370 k, Excel PV fundtion for that PMT=$256k) is around, $113k pretax. And the house value difference mentioned is $50>$250k. Substantial but not on life changing scale by itself. Another comment mentioned that $36k extra a year wipes out, doesn't reduce, savings after retirement account maxxing. But $36k after maxxing isn't huge to beging with at that income by 'FIRE at all costs' standards. OTOH by normal well off US standards just consistently maxxing retirement accounts is healthy savings Or another way of looking at would be why doesn't OP save more now? But I know (from grown kids in not totally different situations) how high expectations are now of the 'upper middle class' lifesteyle in terms of spending on kids, vacations, cars etc. OP is not a 'mllionaire next door' type super saver and would be moving further from it. But it's not a huge change especially if the new house comes out near the bottom of the $0.8-$1mil range.