Earlier quoted context omitted.
If the deficit is 3.8% of GDP [1] and growth is only 2.9% [2] during a supposed economic "boom", something is wrong. [1] https://www.usgovernmentdebt.us/federal_deficit_percent_gdp [2] https://www.reuters.com/article/us-usa-economy/u-s-economic-...
I think our current deficit spending is dumb, but I don't actually see a problem mathematically with this. Assuming we only pay 2% interest on that debt, that's 0.076% of GDP to service the debt from this year. If the new GDP growth is taxed at just 10%, then we have 0.29% of GDP in new taxes. So that's a 4x ROI correct? (of course, the assumption here is that there is no better way to spend that money and that the d…
Where does this come from? the 10-year bond rate was closer to 3% for most of 2018 [1].
==So that's a 4x ROI correct==
You can't calculate ROI with an I. In this case, that is the 3.9% of GDP mentioned. Going forward, we may gain more tax revenue than we would pay in debt servicing each year, but that ignores the initial investment we made.
In reality, you would need to show that the present value of your annual tax revenues (0.29% of GDP - 0.076% of GDP) is larger than the 3.9% of GDP invested initially.
[1] https://www.thebalance.com/interest-on-the-national-debt-411...