Free Resources Where’s My Refund?View refund information for the last three tax years. Taxpayer Bill of RightsEvery taxpayer has a set of fundamental rights they should be aware of – explore your rights and our obligations. Taxpayer RecordsTanscripts of past returns, tax account information, wage and income statements, and more. Withholding CalculatorEstimate the federal income tax you want your employer to withhold. 2024 W-4 FormComplete to determine how much should be withheld from your paycheck. Standard Mileage RatesStandard mileage rates for employees, self-employed individuals, or other taxpayers.