The Affordable Care Act…allows health insurers to charge smokers buying individual policies up to 50 percent higher premiums starting next Jan. 1.

For a 55-year-old smoker, the penalty could reach nearly $4,250 a year. A 60-year-old could wind up paying nearly $5,100 on top of premiums…

Take a hypothetical 60-year-old smoker making $35,000 a year. Estimated premiums for coverage in the new private health insurance markets under Obama’s law would total $10,172. That person would be eligible for a tax credit that brings the cost down to $3,325.

But the smoking penalty could add $5,086 to the cost. And since federal tax credits can’t be used to offset the penalty, the smoker’s total cost for health insurance would be $8,411, or 24 percent of income. That’s considered unaffordable under the federal law. The numbers were estimated using the online Kaiser Health Reform Subsidy Calculator.

Ricardo Alonzo-Zaldivar (AP).