> mortgage interest on a primary residence is permitted in some form in six countries And China[1]. And India[2]. (Although I don't know either country's hous

> mortgage interest on a primary residence is permitted in some form in six countries And China[1]. And India[2]. (Although I don't know either country's housing market and therefore don't know how to interpret upper limits). Between the US, China and India, it seems like most people and the biggest economies do that. [1] https://www.chinadaily.com.cn/a/201812/23/WS5c1e2dc0a3107d4c3a002446.html https://www.chinadaily.com.cn/a/201812/23/WS5c1e2dc0a3107d4c... [2] https://www.bankbazaar.com/tax/mortgage-tax.html https://www.bankbazaar.com/tax/mortgage-tax.html