The Inelastic Demand Curve: Proof that Politicians Are Not Clueless
Wednesday, April 29th, 2009Many people whom I respect think politicians are completely ignorant of basic economics. Often I’m tempted to agree. But there’s one concept they understand quite well. It’s called the inelastic demand curve. That’s a complicated name for a simple idea: I want or need something so badly, I’ll pay pretty much whatever I have to in order to get it.
If you took an intro economics course, you might remember a notebook full of Ls with sloped lines known as demand curves. A normal, downward sloping demand curve refers to the situation where rising prices lead to lower demand for an item. Falling prices spur greater demand. If your local pizzeria raises its price for a large pepperoni by $2, they’ll probably sell fewer pies. Some customers will shrug their shoulders and pay the increase. Others will buy their pizza elsewhere. And a third group will eat less pizza. Pretty straightforward.
Sometimes your personal demand curve for an item may be inelastic temporarily due to special circumstances. If you had a splitting headache, you probably wouldn’t even glance at the price of the only pain medication in the mini-mart. You have a very inelastic demand curve and will pay whatever it costs for some relief. But if you feel fine and still have some pills at home, you’d no doubt wait until you make it to Walmart or your local pharmacy to buy the big bottle of Excedrin.
Unless you’re paranoid, you probably don’t believe politicians are coming after your personal demand curves. They’re heaping extra taxes on the curves that are inelastic for large numbers of people. These are the items many of us want or need so badly-and can’t replace easily-that we won’t cut back no matter how much they cost…up to a point. Some examples include cigarettes, alcohol, and gasoline.
Politicians know that an extra nickel or dime tax on cigarettes, alcohol, or gasoline won’t cause anyone to use less of these products. They often claim they’re raising the taxes to pay for healthcare or new roads, but the truth is they’re raising those taxes because they can. They’ll spend on healthcare and roads anyway. But in recent years, governments at all levels got greedy.
A prime example of this is cigarettes. Federal, state, and local taxes have risen so dramatically that millions of people either quit smoking or substantially reduced their intake. In spite of the sharply higher tax rate, revenue from cigarette taxes has fallen. Some states issued bonds backed by the revenue they expected to receive from the 1999 settlement with tobacco companies. But with fewer smokers, they have experienced a shortfall. You can certainly argue that having fewer smokers is socially desirable, but politicians are frantic. They’ve already spent the settlement money.
So what have we learned? Politicians understand inelastic demand curves and exploit them to ensure the tax money they want keeps flowing. But if they see a big money machine, they get greedy, raise taxes too high, and kill the golden goose. Maybe they are stupid after all.