Earlier quoted context omitted.
Wait, isn't your number 1 the exact opposite, unless you got a variable rate mortgage? If you got a fixed rate mortgage, inflation is your friend, since inflation will decrease your debt.
For fixed rate, you'll get hit when you renew at the end of the term (typically 5y). Say you've got a 5 year fixed mortgage, at 3.49%. You buy a new home, taking a $500k mortgage at 25y amortization. That's $2494/mo. At the end of the mortgage, you'll have $431,321 remaining on the loan. Renewing, if you find the fixed-rate amount is up two points to 5.49%, your 20 remaining years now costs you $2950/mo. If you're ta…
It seems like you're describing a https://en.wikipedia.org/wiki/Balloon_payment_mortgage, where you pay a fixed (or perhaps variable?) rate for a few years, but then need to make a huge balloon payment on that mortgage at the end of the term (usually done by arranging a separate mortgage).