Tax Freedom Day Assess how many days you'll work to pay your federal tax liability. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Share | Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Contents Home Mortgage Deduction Use this calculator to assess the potential benefits of a home mortgage deduction. Red Flags for Tax Auditors Here are six flags that may make your tax return prime for an IRS audit. Social Security Taxes Estimate how much of your Social Security benefit may be considered taxable.