Serious people have been taking labor unions to task for opposing the insurance excise tax, explaining why it makes sense for the Baucus health reform bill to tax high-end insurance plans. Yglesias has helpfully reduced the main policy argument to this:

There’s no good reason for the tax code to privilege compensation taken in the form of health insurance over compensation taken in the form of money.

This is an interesting argument. It could be interpreted as saying that we shouldn’t use the tax code to favor some things over overs, by exempting from taxes things we want to promote and taxing things we’re trying to discourage. So even if we want to encourage everyone getting health insurance or buying homes or making charitable contributions, we shouldn’t structure taxes to favor those choices. I don’t think that’s what he means.

I think this part of the tax discussion should be about what we do/don’t want to encourage/discourage. It’s fine to use the tax code to help price environmental externalities — e.g., via a carbon tax — and rebating it back via the tax system to low-income folks or, e.g., those who weatherize their homes. At the same time, I’m not convinced that income from investment should be taxed at only 15 percent compared to income from wages and regardless of total income.

It’s one thing to criticize the tax exclusion for employer-provided insurance because it favors the wealthy over the middle class, for example, by giving a much larger tax exclusion to wealthy people with employer-paid $40,000 insurance policies than it gives to middle-class folks whose employer offers a $21,000 plan in a high-cost region, never mind someone who buys their own. Seems to me the remedy for that unfairness should be structured progressively based on the person’s total income, and the cost of an insurance plan is often a poor proxy for that.

It’s quite another thing to say that a middle class family should pay higher taxes because it chooses to take income in the form of employer-paid high value insurance and not lean on anyone else.

I understand the economic arguments against the current structure, but if folks can achieve some economic and health security — which are presumably government’s goals in any reform — through this means, it’s not clear why government should be looking here for substantial revenues, no matter how well the tax tracks rising health costs, as opposed to a zillion other tax shelters that are far more egregious in both social unfairness and public harm.