President Obama's new budget proposal includes changing a couple of key inflation calculations to something called a "chained CPI." The shift is getting a lot of attention right now because of the expected effect it will have on individuals.
There are two key places where a chained CPI -- short for consumer price index -- will have a direct impact on your pocketbook: income taxes and Social Security benefits. All else being equal, over time, your income taxes will be higher and your Social Security benefits will be lower than they are under current inflation calculations.
The key difference between the chained CPI and the traditional consumer price index is how the index measures consumer behavior. The chained CPI assumes that as prices rise on one product, some portion of consumers will be willing to substitute less expensive alternatives for what they used to buy.
That changes the product weightings used in the inflation calculation. By incorporating information from those new product weightings, the chained CPI typically produces a lower inflation level.
Here's how it works.
The Impact on Income Taxes
If you pay income taxes, your tax bracket is determined by the amount of taxable income you make. The cutoffs for each bracket generally rise over time with inflation.
The two charts below show the IRS "Schedule X" brackets for single taxpayers; the first is for 2012, and the second is what's currently expected for 2013:
While the 39.6 percent tax rate is new for 2013, note that the other brackets have higher cutoffs for 2013 than they did for 2012. That's thanks to the inflation adjustment made to the tax brackets.
If the law is changed so that the chained CPI is used, the tops of those brackets are expected to rise more slowly, exposing more of your income to higher tax rates than under current law.
The Effect on Social Security Benefits
Similarly, Social Security benefits are increased based on the inflation rate. By tying the payment increases to the chained CPI -- an inflation rate that grows more slowly than the current measure -- those benefit payments will grow less quickly as well. As a result, over time your Social Security checks will be smaller than they would have been under the old inflation calculation.
The annual changes aren't too extreme -- they're estimated to be somewhere in the vicinity of 0.1 percent to 0.3 percent per year, depending on what the future brings. But over time, it adds up to real money for those who pay income taxes or receive Social Security checks, with official estimates in the neighborhood of $340 billion in higher taxes and lower costs over the next 10 years.
Is It Better? Is It Fair?
To some extent, the chained CPI is more effective at measuring the behavior changes that we all make whenever possible to save some cash.
For example, if you've switched to generic medications whenever they're available, you're doing exactly what the chained CPI expects you to do. Likewise, if you started carpooling or taking the bus in response to higher gas prices, you're changing your behavior based on higher prices, just like the chained CPI projects.
On the flip side, of course, not all costs are easily switchable, especially for the seniors who rely on Social Security. For instance, health care costs have been rising faster than the overall inflation rate for decades, and older folks generally have higher health care costs than younger ones do. As a result, the change to a chained CPI will very likely make the gap between income growth and health care spending growth even more painful for seniors on Social Security.
The Big Picture
Still, if slowing the rate of benefit increases puts off the day of reckoning for when the Social Security Trust Fund runs out of cash and slashes benefits by around 25 percent, it may be worth it. That date is currently estimated to be a mere 20 years away -- well within the expected life span of most current workers and even some early retirees. To make it worse, if the CBO's recent release on Social Security is any indication, the next Social Security Trustees' Report may even pull that date even closer.
Given a choice between a slower rate of growth or a hard slash of 25 percent at some point in the not-too-distant future, neither option seems ideal. But still, a slower rate of growth is a lot less painful than waking up one day to find your sole source of income has shrunk by a quarter of its former value.
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