House tax writers (at least some of them) are worried that slashing the corporate tax rate found will push the deficit higher in a hurry – an analysis by the Tax Policy Center found that cutting the rate to the stated goal of 20 percent would cost $2 trillion over a decade. One way to soften the fiscal blow would be to phase in the reduction over three to five years. House Republicans say such an approach would reduce the size of the lost revenue by half.