“America could soon get a lot poorer.

The U.S. Census Bureau is experiment­ing with a new formula that would raise the poverty threshold for a family of four to $19,500 from $16,660. Through a simple change of definition, one that has nothing to do with economic realities, 12 million Americans might become “poor” overnight.

It’s true that existing measures of poverty are riddled with flaws. But the problem isn’t that they underestimate poverty; it’s that they overestimate it. When we’re trying to determine well being, the proper yardstick is consump­tion, not income. They aren’t the same thing — especially among the poor. The poverty rate tells us how many Americans earn low incomes, not what they’re able to buy.

Households in the bottom fifth of the income distributon consume well beyond their earnings. In 1997 an average low ­income household made $7,086 year before taxes. Consumption — what the poor spent, not what they earned — totaled $14,670.

How can poor families consume more than they earn? Many supplement their income through welfare, Food Stamps, unemployment benefits, Medicare, Medic­aid, school lunches, rent subsidies and other programs, all of which the statistics leave uncounted. And the poverty statis­tics ignore wealth, which can be more important than current income. Workers temporarily laid off don’t get paychecks but they often have savings to fall back on. Although many retirees earn low in­comes, their houses, cars and furnishings are paid for, and they’ve got nest eggs. In 1993, 302,000 families with incomes of less than $20,000 lived in homes worth more than $300,000.

When you’re really poor, everything you see is something you can’t have. But over the years, the poor have gained ac­cess to more goods. Government statistics show that poor households own many of the consumer goods usually associated with middle class life in the United States.

The percentage of poor households with washing machines rose to 72% in 1996 from 58% in 1984. Ownership of dryers went to 50% from 36%. Two-thirds of poor families had microwave ovens in 1996, up from one in eight a decade ago. Ninety-seven percent of poor households have color televisions, and three-fourths have videocassette recorders. Almost three-quarters of poor families own at least one car.

By the standard of day-to-day liv­ing — the standard that really matters — the poor have gotten much richer. Indeed, poor households in the 1990s are in many ways better off than average families in the early 1970s. Two-thirds of poor households had air-conditioners in 1997, compared with less than a third of all households in 1971. And it wasn’t a wel­fare program that made it possible; it was the free market which has introduced innovative new products and brought the prices down.

Spending patterns help explain how the poor can afford more of the trappings of middle-class life yet still not escape the poverty statistics. Among American households below the poverty line, outlays for food, clothing and shelter were 37% of con­sumption in 1995, compared with 52% two decades earlier, 57% in 1950 and 75% in 1920. Thus poor households have consider­ably more discretionary income than they once did.

One reason is that the U.S. govern­ment has already been raising the poverty threshold too quickly. For more than three decades the government has been adjusting the poverty line every year for inflation. The Boskin Commission con­cluded in 1996 that the consumer price index overstates the actual rise in the cost of living by a percentage point a year. What’s more, the overall CPI has risen 40% faster than the cost of groceries since 1965.