The deadline for filing your income tax return with the IRS is just over 4 weeks away. If you haven’t filed yet, there are a number credits that can lower your total tax bill or maximize your refund. Unlike a deduction, which reduces the amount of your income subject to tax, credits actually reduce taxes you owe on a dollar-for-dollar basis, which means that they are great tools to limit your tax bill or maximize your refund. If you’re interested in minimizing your tax liability, then here are five credits you should be aware of before filing your 2012 federal income tax return...