But when you look a little closer — especially when you look at the value of President Obama’s taxpayer-funded retirement benefits — you might think a little differently about what “rich” means. For starters, the point at which Obama wants to eliminate your ability to deduct retirement account contributions isn’t actually the $3.4 million in his budget proposal — that’s just an estimate. The real number is how much a couple age 62 would have to pay for an annuity that yields $205,000 a year. That $3.4 million — which applies to the combined values of your pension and retirement accounts — is subject to a sharp downward change in the future because annuity issuers charge significantly less for an annuity when interest rates are higher than they do today, with rates at rock-bottom levels.

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I’ll grant you that $205,000 a year — the current IRS maximum for what a pension fund can pay a recipient — is serious money in many places. But it doesn’t buy you a rich retirement lifestyle in, say, Manhattan, N.Y., where 205K is equivalent to only 88K in Manhattan, Kans. The Manhattan-Manhattan distinction, from
Money’s cost-of-living comparator
, is an example of the difference between being rich statistically and being rich in reality.

Second, I can’t get past Obama wanting to limit savers to only about half the value of what he stands to get from his post-presidential package. Based on numbers from Vanguard Annuity Access, I value his package at more than $6.6 million. (My calculations are at the bottom of this piece.)

That’s right, $6.6 million. And that doesn’t include the IRAs in which Obama has been socking away the $50,000-a-year maximum, or the $18,000 (plus cost of living) a year he will get at age 62 for his service in the Illinois senate, or any other benefits he or his wife may realize from past or future jobs.

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Because Obama will be only 56 when he leaves office, his annual pension — which by law equals the salary of a cabinet secretary, now $200,000 — would be worth $3.86 million at today’s annuity rates. The inflation adjustment — when cabinet salaries rise, a President’s pension rises — is worth at least $770,000 more. His personnel allowance — $150,000 a year for 2 1/2 years, then $96,000 for life — is worth $1.98 million. Total: $6.6 million.

I’m not begrudging Obama his benefits, which are exactly the same as what other ex-Presidents get. I’m trying to put his retirement account proposal in perspective. If Obama feels so strongly about denying tax deductions to people like himself with “excess” benefits and to their employers, he can write checks to the IRS and Illinois for what he’s saved by deducting his IRA contributions. But I won’t hold my breath.

Yes, there are retirement account abuses. It’s unconscionable that people like Mitt Romney — remember him? — end up with eight-digit retirement accounts by stuffing them with assets (such as stakes in leveraged buyouts) that have low starting values but massive upsides and are available only to the elite. But that abuse is easily solved. To set up a whole new bureaucracy to monitor the value of everyone’s pension and 401(k) strikes me as a vast overreaction.

Although this proposal is unlikely to become law, I don’t like the principle of it. We should be encouraging people to save more for retirement, as parts of Obama’s budget propose, rather than penalizing “the rich” (as Obama defines them).

The White House declined comment. But to me, this is all really simple: Limiting tax-favored retirement assets of people who have saved all their lives to about half of what taxpayers will give Obama for eight years in office is just wrong. End of story.

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This story is from the May 20, 2013 issue of Fortune.