26inirvine said:
I know for myself I figure why pay 4.5% when I can pay 3% and will be putting that extra 1.5% down on principal (so basically making the same payment I would have made anyways. I know for some, they would rather take that difference and invest that because they think they will get a better rate on their money. I'm not saying they won't, its just not my thing.
For the adjustment risk, like Trojan said above, you have to evaluate yourself. My goal is to get a much smaller loan than I can afford from the start and therefore pay it off quicker. Say I am in year 5 or 6 and rates are starting to go higher and higher than I would probably even put more into principal Therefore, when it does come time to adjust hopefully the balance will be quite small so interest won't really matter that much (since its calculated based on principal)
edit: I shouldn't say I am getting a much smaller loan than I can afford since that is pretty subjective. I should say much smaller than i could qualify for. IMO I could probably qualify for a loan that is higher than i could afford.
at the current rate difference of about 125, the after tax delta ends up being 81 basis points delta in rate for first 5 years. (assuming 35% combined marginal rate) After that, who knows.
Totally understand the argument about not living in same home for more than 5 to 7 years on average but if rates are higher in the future and you have to rent it out, you have lower cost with the 30 year fixed or you even have the option to "wrap" the mortgage and provide your buyers with a below market rate, making your home a more attractive purchase. (something some sellers did during the 80s where rates were crazy high).
Given the high volatility of interest rates in last 5, 10, 20, 30 years, 81 bps for a fixed rate seems like an awfully cheap insurance policy.