I don't think you can assume this from the conclusions or data of this study for a couple reasons: - The effects of increased spending are not necessarily th

I don't think you can assume this from the conclusions or data of this study for a couple reasons: - The effects of increased spending are not necessarily the same as the inverse of the effects of decreased spending. I think you'd need to do a lot of work to get that relationship clear, or do a study specifically on raised spending vs. gdp. And historically the period in the US with the greatest growth in tax rate (the post-WW2 period) was also a period of tremendous gdp growth, but obviously there are a lot of confounding factors there. - Government spending is largely decoupled from revenue these days anyways. Tax cuts rarely come with proportional spending cuts and no matter what the US is still dumping ~a trillion a year into defense and related industries. As the sibling comment points out, this study was done on taxes not spending. The government has more sources than taxes for its money supply.