1. CHAPTER 8
Personal Finance

2. 8.2
Income Tax

3. Objectives
1. Determine gross income, adjustable gross income, and taxable income.
2. Calculate federal income tax.
3. Calculate FICA taxes.
4. Solve problems involving working students and taxes.

4. Income Tax
Income tax is a percentage of your income collected by the government to fund its services and programs.

5. Percent and Income Tax Calculating Income Tax:
Determine your adjusted gross income:
2. Determine your taxable income:

6. Percent and Income Tax
Determine the income tax:

7. Example: Gross Income, Adjusted Gross Income and Taxable Income
A single man earned wages of $46,500, received $1850 in interest from a savings account, received $15,000 in winnings on a television game show, and contributed $2300 to a tax-deferred savings plan. He is entitled to a personal exemption of $3800 and a standard deduction of $5950. The interest on his home mortgage was $6500, he paid $2100 in property taxes and $1855 in state taxes, and he contributed $3000 to charity. a. Determine the man’s gross income. b. Determine the man’s adjusted gross income. c. Determine the man’s taxable income.

8. Example (cont) a. Determine the man’s gross income.
A single man earned wages of $46,500, received $1850 in interest from a savings account, received $15,000 in winnings on a television game show, and contributed $2300 to a tax-deferred savings plan. He is entitled to a personal exemption of $3800 and a standard deduction of $5950. The interest on his home mortgage was $6500, he paid $2100 in property taxes and $1855 in state taxes, and he contributed $3000 to charity.
a. Determine the man’s gross income.
Gross income refers to this person’s total income, which includes wages, interest from a savings account, and game-show winnings.
Gross income = $46,500 + $ $15,000 = $63,350

9. Example (cont) b. Determine the man’s adjusted gross income.
A single man earned wages of $46,500, received $1850 in interest from a savings account, received $15,000 in winnings on a television game show, and contributed $2300 to a tax-deferred savings plan. He is entitled to a personal exemption of $3800 and a standard deduction of $5950. The interest on his home mortgage was $6500, he paid $2100 in property taxes and $1855 in state taxes, and he contributed $3000 to charity.
b. Determine the man’s adjusted gross income.
Adjusted gross income is gross income minus adjustments. The adjustment in this case is the contribution of $2300 to a tax-deferred savings plan.
$63,350 − $2300 = $61,050

10. Example (cont) c. Determine the man’s taxable income.
A single man earned wages of $46,500, received $1850 in interest from a savings account, received $15,000 in winnings on a television game show, and contributed $2300 to a tax-deferred savings plan. He is entitled to a personal exemption of $3800 and a standard deduction of $5950. The interest on his home mortgage was $6500, he paid $2100 in property taxes and $1855 in state taxes, and he contributed $3000 to charity.
c. Determine the man’s taxable income.
We need to subtract exemptions and deductions from the adjusted gross income to determine the man’s taxable income. This taxpayer is entitled to a personal exemption of $3800 and a standard deduction of $5950. However, a deduction greater than $5950 is obtained by itemizing deductions.
$ $ $ $3000 = $13,455

11. Example (cont) = $61,050 – ($3800 + $13,455) = $61,050 – $17,255
A single man earned wages of $46,500, received $1850 in interest from a savings account, received $15,000 in winnings on a television game show, and contributed $2300 to a tax-deferred savings plan. He is entitled to a personal exemption of $3800 and a standard deduction of $5950. The interest on his home mortgage was $6500, he paid $2100 in property taxes and $1855 in state taxes, and he contributed $3000 to charity.
Taxable income = Adjusted gross income −(Exemptions + Deductions)
= $61,050 – ($ $13,455)
= $61,050 – $17,255
= $43,795
The taxable income is $43,795.

12. Percent and Income Tax
The table shows tax rates, standard deductions, and exemptions for the four filing status categories.

13. Example: Computing Income Tax
Calculate the income tax owed by a single woman with no dependents whose gross income, adjustments, deductions, and credits are given. Use the marginal tax rates from the table.
Single Woman with no dependents:
Gross income: $62,000
Adjustments: $4,000
Tax credit: $500
Deductions:
$7500: mortgage interest
$2200: property taxes
$2400: charitable contributions
$1500: medical expenses not covered the insurance

14. Percent and Income Tax Example Continued
Solution: Step 1. Determine the adjusted gross income. Adjusted gross income = Gross income – Adjustments = $62,000  $4000 = $58,000

15. Example continued Step 2. Determine taxable income.
We substitute $12,100 for deductions in the formula for taxable income.

16. Example continued = $58,000 – $15,900 = $42,100
Taxable income = Adjusted gross income – (Exemptions + Deductions)
= $58,000 – ($ $12,100)
= $58,000 – $15,900
= $42,100
Step 3. Determine the income tax.
Income tax = Tax computation – Tax credits
= Tax Computation  $500
Since the single woman taxable income is $42,100 she falls in the tax bracket of 25%.

17. Example continued
This means that she owes: 10% on the first $8700 of her taxable income, 15% on her taxable income between $8701 to $35,350, inclusive, and 25% on her taxable income above $33,350.

18. Example continued = $870.00 + $3997.50 + $1687.50 = $6555.00
= 0.10  $  ($35,350  $8700)  ($42,100  $35,350)
= 0.10  $  ($26,650)  $6750
= $ $ $
= $
We substitute $ for the tax computation in the formula for income tax.
Income tax = Tax computation – Tax credits
= $  $500
= $
Thus, the income tax owed is $

19. Social Security and Medicare (FICA)
In addition to income tax, we are required to pay the federal government FICA (Federal Insurance Contributions Act) taxes that are used for Social Security and Medicare benefits. Social Security provides payments to eligible retirees, people with health problems, eligible dependents of deceased persons, and disabled citizens. Medicare provides health care coverage mostly to Americans 65 and older.

20. Example: Computing FICA Tax
If you are not self-employed and earn $150,000, what are your FICA taxes?
Solution
The tax rates are 5.65% on the first $110,000 of income and 1.45% on income in excess of $110,000.
FICA Tax = × 110, × (150,000 − 110,000)
= × $110, × $40,000
= $ $580
= $6795

21. Example: Taxes for a Working Student
You would like to have extra spending money, so you decide to work part-time at the local gym. The job pays $10 per hour and you work 20 hours per week. Your employer withholds 10% of your gross pay for federal taxes, 5.65% for FICA taxes, and 3% for state taxes. a. What is your weekly gross pay? b. How much is withheld per week for federal taxes? c. How much is withheld per week for FICA taxes? d. How much is withheld per week for state taxes? e. What is your weekly net pay? f. What percentage of your gross pay is withheld for taxes? Round to the nearest tenth of a percent.

22. Example: Taxes for a Working Student
The job pays $10 per hour and you work 20 hours per week. Your employer withholds 10% of your gross pay for federal taxes, 5.65% for FICA taxes, and 3% for state taxes.
a. What is your weekly gross pay?
20 hours × $10 per hour = $200
b. How much is withheld per week for federal taxes?
Federal taxes = 10% of $200 = 0.10($200) = $20
c. How much is withheld per week for FICA taxes?
FICA taxes = 5.65% of $200 = ($200) = $11.30

23. Example: Taxes for a Working Student
The job pays $10 per hour and you work 20 hours per week. Your employer withholds 10% of your gross pay for federal taxes, 5.65% for FICA taxes, and 3% for state taxes.
d. How much is withheld per week for state taxes?
State taxes = 3% of $200 = 0.03($200) = $6
e. What is your weekly net pay?
Net pay = $200 − ($20 + $ $6)
= $ − $37.30
= $162.70

24. Example: Taxes for a Working Student
The job pays $10 per hour and you work 20 hours per week. Your employer withholds 10% of your gross pay for federal taxes, 5.65% for FICA taxes, and 3% for state taxes. f. What percentage of your gross pay is withheld for taxes? Round to the nearest tenth of a percent.