Barack Obama vs Mitt Romney. Differences in Economic Policy Tax Policy Highlights of Mitt Romney's tax plan include: Individual taxes Maintain current marginal tax rates; make the Bush tax cuts permanent (Romney's website is inconsistent on this issue as of Apr 13, 2012. The summary indicates he is proposing a 20% across-the-board cuts in marginal tax rates while the policy PDF file summary indicates he wants to maintain marginal tax rates at current levels.) Prime-time pick: Conservative Ryan solidifies Romney's team. Barack Obama vs Mitt Romney.