PSNCR Theories - Cyclical or Structural - What determines it?

Theory 1 (PSNCR and the trade cycle) shows that the PSNCR will tend to vary with the economic cycle. If this happens over a number of years and the PSNCR fluctuates around an average value of zero, then the government doesn't need to worry about it too much. A recession may increase it, but the onset of recovery will help it fall again. If this is the case then the PSNCR is termed a cyclical PSNCR.

However, it will often be the case that the value that the PSNCR fluctuates around is far from zero. This means that the government is borrowing all the time. In other words, it is borrowing over the long term. Where this happens, this part of the PSNCR is termed a structural PSNCR. Governments do need to worry more about a structural PSNCR as it is a long-term one, and they need to think about how they can reduce it. They have two main alternatives:

1. Increase taxes
2. Reduce government expenditure

If they don't do either of these, there will be a permanent PSNCR and the national debt will grow over time.