 In 2007, Madaleno sponsored legislation to increase the value of the Maryland Refundable Earned Income Tax Credit, an anti-poverty tool.During a special session later that year, the measure was incorporated into a larger tax bill and became law.In addition, he helped close a tax loophole that was costing Maryland roughly $10 million a year by passing legislation that stops a common business practice of artificially lowering taxable profits by paying rent, a deductible business expense, to shell companies controlled by the same parent company.