Δ ( )Tax NewTotalTax OldTotalTMax
TaxableIncome N larginnal oTax ewTaxab eI c me OldTaxableIncomRatee
The marginal tax rate is particularly useful in tax planning because it represents the rate of taxation or savings that would apply to additional taxable income or tax deductions . The average tax rate represents the taxpayer‘s average level of taxation on each dollar of taxable income. Specifically, Average Tax Rate = TotalTax
TaxableIncome The average tax rate is often used in budgeting tax expense as a portion of income (i.e., what percent of taxable income earned is paid in tax). Solutions Manual —Taxation of Individua ls and Business Entities by Spilker, et al. © McGraw Hill LLC. All rights reserved. No reproduction or distribution without the prior written consent of McGraw Hill LLC. 4 The effective tax rate represents the taxpayer‘s average rate of taxation on each dollar of total income (i.e., taxable and nontaxable income). Specifically, Effective Tax Rate = Total Tax
Total Income The effective tax rate provides a depiction of a taxpayer‘s tax burden because it depicts the taxpayer‘s total tax paid as a ratio of the sum of both taxable and nontaxable income earned. (12) [LO 3 ] Which is a more appropriate tax rate to use to compar e taxpayers’ tax burdens – the average or the effective tax rate? Why? Relative to the average tax rate, the effective tax rate provides a better depiction of a taxpayer‘s tax burden because it depicts the taxpayer‘s total tax paid as a ratio of the sum of both taxable and nontaxable income earned. (13) [LO 3 ] Describe the differences between a proportional, progressive, and regressive tax rate structure. A proportional (flat) tax rate structure imposes a constant tax rate throughout the tax base. In other words , as the tax base increases, the taxes paid increases, but the marginal tax rate remains constant. Because the marginal tax rate is constant across all levels of the tax base, the average tax rate remains constant across the tax base and always equals the marginal tax rate. Common examples of proportional taxes include sales taxes and excise taxes (i.e., taxes based on quantity such as gallons of gas purchased). A progressive tax rate structure imposes an increasing marginal tax rate as the tax base increas es. In other words, as the tax base increases, both the marginal tax rate and the taxes paid increase. Common examples of progressive tax rate structures include federal and most state income taxes and federal estate and gift taxes. A regressive tax rate s tructure imposes a decreasing marginal tax rate as the tax base increases. In other words, as the tax base increases, the taxes paid increases, but the marginal tax rate decreases. Regressive tax rate structures are not common. In the United States, the So cial Security tax and the federal employment tax employ a regressive tax rate structure. However, there are other regressive taxes when the tax is viewed in terms of effective tax rates. For example, a sales tax by definition is a proportional tax – i.e., as taxable purchases increase, the sales tax rate (i.e., the marginal tax rate) remains constant. Nonetheless, when you consider that the prop ortion of your total income spent on taxable purchases likely decreases as your total income in creases, you can se e the sale tax as a regressive tax.