How to quantify the true buy‑vs‑rent opportunity cost: a math-first model using mortgage rate, expected equity returns and local rent growth
I’m often asked whether buying a home “makes sense” versus continuing to rent — and the honest answer I give is: it depends. The decision is rarely binary. What I aim to do here is give you a math-first framework to quantify the true buy‑vs‑rent opportunity cost using three core inputs: the mortgage rate, expected equity (stock/portfolio) returns on cash you don’t put into the house, and local rent growth. If you like numbers and...