When will US federal deficits matter?
Now that the Federal Reserve has moved into tightening mode, it’s worth asking when the US deficits and overall debt could become a source of worry. As long as interest rates stay reasonably low without driving persistently high inflation, I believe deficits and the debt won’t matter too much to the economy or markets. The debt won’t be painful to finance and can continue to grow — within reason. In fact, if economic growth is higher than the interest rate on government borrowing, it’s possible for debt to GDP to shrink even amid sizeable deficits.