Consumer debt – student loans, auto loans, and revolving credit such as credit cards and personal loans but excluding housing-related debts such as mortgages and HELOCs – jumped by $187 billion in the fourth quarter 2019, compared to a year earlier, or by 4.7%, to a record $4.2 trillion, according to Federal Reserve data released Friday afternoon:

How much did all this borrow-and-spend contribute to GDP?

Almost all non-housing consumer debts translate into consumer spending on goods and services, which is added to GDP. That $187 billion increase in consumer debt in 2019 amounted to nearly a quarter of the $849 billion increase in nominal GDP over the same period.

Without this $187 billion in additional spending funded by $187 billion in additional debt, the US economy would not have grown 2.3% in 2019, but only about 1.8%. This is why economists from the Fed on down want policies that encourage consumers to spend money they don't have. It's the American thing to do. And if there's a hiccup down the road, so be it. And now there are some hiccups.