The 30-Year Mortgage Is Saving the US Economy … or Is It?

Why is the US housing market not crashing? Interest rates are up, which means more expensive mortgages, which should push down demand. House prices are already falling in other countries, by nearly 9% in Canada and 16% in New Zealand. A map from UBS shows that, worldwide, many urban housing markets are bubble territory.

But in the US, prices have barely budged. The explanation is straightforward if not exactly simple: the 30-year mortgage. It is a financial product that should not exist — and it may well be the only thing keeping the US housing market from collapsing right now.

The risk of a housing crash is not only that people could lose their homes and much of their wealth, as they did in 2008. It’s that it could cause a deep recession. As the Great Recession showed, a recession brought on by a fall in house prices can be especially severe, since housing tends to be the largest component of household wealth. New Zealand is already in a recession, and there are concerns that the housing market will cause more economic turmoil in the UK.

Housing Crash? Not in the US | Prices are falling almost everywhere, but among wealthy countries, America's decline has been more gentle.

Even as prices for other things are going up, house prices aren’t, at least in developed countries. This is because house prices are more sensitive to interest rates. A decade of low rates — spurred by the US Federal Reserve’s policy of quantitative easing, in which the Fed bought up lots of mortgage-backed securities, and then accelerated by the pandemic — brought mortgage rates to historic lows in 2020 and 2021. Many Americans bought new homes or refinanced them in the last several years. Finally, there are housing shortages in desirable areas, and more foreign and investment buyers, all of which have driven up prices in the US since the last housing bust.

Nowhere in the world is the 30-year fixed-rate mortgage as popular as it is in the US — and for good reason. Fannie Mae (created in 1938) and Freddie Mac (1970) made the 30-year fixed-rate mortgage popular in the US because they would buy mortgages from banks, offloading both their rate and default risk. In the absence of government intervention, no sane banker would lend a single household so much money for 30 years at a fixed rate.