We've got an interesting back-and-forth between Joe Carter and Josh Claybourn on taxes; Joe is defending John McCain's deficit hawk side and systematically trashing supply-siders, while Josh ably picks up the gauntlet and throws the reality of the Laffer Curve back at him.
I think they both have some flaws in their arguments. First, to Joe, who seems to have slid over into the Bull Moose's camp now that Huckabee's campaign has (regrettably) jumped the shark.
Contrary to what some might claim to be a
"real fiscal conservative" requires adherence to fiscal disciple and
recognition of economic realties. Almost all conservatives pay lip
service to the first, yet many today seem to ignore the latter. To my
mind, there appear to be only three reasons not to tie tax cuts to spending reductions--and all appear to defy reality.
The first is the "starve the beast" strategy...The second reason is a modified version of the first: conservatives
believe that we can take the tax cut now and force spending reductions
in the future. While history has shown the "starve the beast" strategy
to be nonsensical, the "Cut now, Spend less later" is plausible, though
politically untenable.
While I agree with McCain's take that it would be an insult to say that Congress spends like a bunch of drunken sailors, since he never saw a sailor with that much creativity in blowing cash, there is a bit of truth to the second premise; liberals are somewhat constrained in new spending due to the fact that the deficit is rather large to begin with. They either have to trim elsewhere or raise taxes significantly in order to fund any major new project like a national health care plan.
Unfortunately, a lot of minor (and not so minor, like Medicare prescription coverage) new spending stuff has gone through over the last few years. Moderate Republicans, when unable to say no to a new extension of a current program, are also unable to say yes to a tax increase to pay for it, and wind up running up the deficit.
On that point, Joe is largely correct; the put-Leviathan-on-a-diet strategy doesn't work, since Levvie always seems to sneak a run into Cheezyburger on his way home from work.
However, he seems to go somewhat off the tracks on part three-
The third and most common reason people think tax cuts and spending
reductions can be untethered is because they have a faulty
understanding of supply-side theory. Rather than supply-side theory,
some conservatives believe in supply-side magic: Cut taxes and you'll get more tax revenue than before! This, of course, is nonsense, as any supply-side economist will admit.
I'm not sure I qualify as a "supply-side economist," but I do play one on occasion in the classroom when I teach macroeconomics. My Ph.D. is in Finance, but my doctoral minor is in International Economics and have 27 graduate semester hours in economics. I am currently teaching Managerial Economics at Sullivan University, so I think I have enough credentials to call B.S. on that last sentence.
The key to his argument is how high the taxes are before getting cut. Josh's piece trots out the construct of the Laffer Curve, which is the now-classic idea that at some point, an increase in tax rates will actually decrease revenues. If the tax rate is high enough, people start getting more interested in tax avoidance or trading income for leisure, and taxable income falls faster than the tax rate rises, creating a drop in tax revenue. At such a point, a cut in the tax rate would increase tax revenues, since taxable income would rise more than the tax rate fell.
When the Laffer Curve was being first promulgated in the late 70s, the top marginal tax bracket was 70%; the Reagan tax cuts of the early 80s brought that down to 50% and later to 28% in 1986. In the early going, one could make the case that 70% was on the downslope of the Laffer Curve and the paradoxical idea that a tax-cut could raise revenue might actually have been legit.
That being said, I don't think we're on the right side of the Laffer Curve today; Joe should hold his fire for the folks who think we're still on the right side, for those would be the folks that would be in the supply-side-magic camp. Current tax cuts would be unlikely to be fully self-financing via growth, but they might be partly self-financing to the extent that the lower taxes will encourage more work and more investments.
This is where this passage from Joe's piece runs aground a bit-
According to supply-siders, the beneficial effect of lowering tax
rates is that it expands the tax base. The more people paying taxes or
more people moving up into a higher tax rate, the more the revenue lost
from the tax cut will be offset. But rarely--if ever--does a tax cut
pay for itself. That is why it is essential to reduce spending.
This should be obvious to anyone who gives it a moment's reflection.
Consider an example on the microeconomic level: Imagine you make $100 a
week and are in credit card debt. You decide that you can't live on
such a measly salary and so continuously borrow $1 a week from your
credit card. Are you better off financially? Maybe in the short run,
since you have an extra dollar to spend or invest. Eventually, though,
you have to pay back the dollar (plus interest) that you borrowed. You
are penalizing your future self to improve your present condition.
I have two issues with his scenario. The first is that the assumption that the extra cash from the borrowing will be spent; some of it could be invested. If it is invested at a rate higher than our interest rate, we'll be rewarding our future self. We will have to pay back the dollar with interest, but if we're earning 15% and only paying 5% in interest, we'll be ahead of the game.
Secondly, the federal government will borrow at a lot lower interest rate than the credit card.
Tax cuts will help draw more investment into the economy, which will help generate more taxable income in the future. True, deficit spending in the short term will create a "crowding out effect" that will raise interest rates and have government taking capital that could have been used for private-sector purposes, but the lower taxes will have a crowding-in effect of people looking to invest more, given that the take-home pay of investment will have increased.
Granted, the increase in revenues that Bush cites might be due to a sound economy growing rather than his tax cuts, but part of that economic growth was likely due to the tax cuts. How much is open to debate.
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