Chapter 4 Individual Income Tax Overview, Dependents, and Filing Status

Individual Income Tax Formula

  • Individuals report taxable income to the IRS using Form 1040.
  • U.S. tax laws use the all-inclusive income concept.
    • Realized income: Measurable change in property rights.
    • All realized income is included in gross income unless expressly excluded or deferred.
    • Recognized income: Reported on tax return.
  • Formula:
    • Gross income
    • Minus: For AGI (above the line) deductions
    • Equals: Adjusted gross income (AGI)
    • Minus: From AGI (below the line) deductions:
      • Greater of (a) Standard deduction or (b) Itemized deductions and
      • Deduction for qualified business income
    • Equals: Taxable income
    • Taxable income
    • Times: Tax rates
    • Equals: Income tax liability
    • Plus: Other taxes
    • Equals: Total tax
    • Minus: Credits
    • Minus: Prepayments
    • Equals: Taxes due or (refund)

Excluded and Deferred Income

  • Excluded and deferred income are not included in gross income.
  • Excluded income
    • Income never included in taxable income.
      • Examples: Municipal bond interest and Gain on sale of personal residence.
  • Deferred income
    • Income included in a subsequent tax year.
      • Examples: Installment sales and Like-kind exchanges.

Character of Income or Loss

  • Determines rates applicable to income or loss in current year.
  • Tax-exempt: No tax.
  • Tax-deferred: No tax in current year (current-year tax rate is zero).
  • Ordinary: Ordinary rates from tax rate schedule.
  • Qualified dividends: Taxed at 0 percent, 15 percent, or 20 percent depending on taxpayer’s income level.

Capital Gains and Losses

  • Capital gain or loss depends on whether it is short-term or long-term.
  • Results from selling a capital asset.
  • If a capital asset is held for more than a year, the gain or loss is long-term; otherwise, it is short-term.
  • Net long-term gains in excess of short-term capital losses, if any, are called “net capital gains” and are taxed at rates lower than rates on ordinary income.
  • Capital assets
    • Generally, all assets except:
      • Accounts receivable
      • Inventory
      • Assets used in trade or business, including supplies
  • Capital gains and losses
    • Net long-term capital gains in excess of net short-term capital losses are generally taxed at 0 percent, 15 percent, or 20 percent depending on the taxpayer’s taxable income.
    • Short-term capital gains are taxed at ordinary rates.
  • Net capital losses (losses in excess of gains for year)
    • 3,0003,000 deductible against ordinary income for the year (reduce AGI).
    • Losses over 3,0003,000 are carried forward indefinitely.

Netting Capital Gains/Losses

  • Net short-term gains/losses.
  • Net long-term gains/losses.
  • If net short-term and net long-term have the same sign (both negative or both positive), stop.
  • If net short-term and net long-term have different signs (one positive and one negative), net them together.
  • Capital loss can reduce ordinary income by 3,0003,000.

Example of Netting Capital Gains/Losses

  • Short term-gain 4,0004,000 or 2,0002,000
  • Short term-loss (2,000)(2,000)
  • Long term-gain 3,0003,000
  • Long term-loss (10,000)(10,000) or (7,000)(7,000)
  • Long term-loss (5,000)(5,000)
  • Deduct against ordinary income (3,000)(3,000)
  • Carryover (2,000)(2,000)

Deductions for AGI

  • “Deductions above the line.”
  • Deducted in determining adjusted gross income.
  • Always reduce taxable income dollar for dollar.
  • Common for AGI deductions:
    • Alimony paid (pre-2019 divorce decree)
    • Rental and royalty expenses
    • Contributions to qualified retirement accounts

Deductions from AGI

  • Deducted from adjusted gross income to determine taxable income.
  • “Deductions below the line.”
  • Greater of the standard deduction or itemized deductions.
  • Common itemized deductions (Schedule A):
    • Mortgage interest
    • State income taxes
    • Charitable contributions
  • Deduction for qualified business income (not an itemized deduction).
    • Deduction = Qualified business income × 20%

2024 Standard Deduction Amounts

  • Married filing jointly: 29,20029,200
  • Qualifying surviving spouse: 29,20029,200
  • Married filing separately: 14,60014,600
  • Head of household: 21,90021,900
  • Single: 14,60014,600

Tax Calculation

  • The United States uses a progressive tax rate schedule.
  • Rates range from 10 percent to 37 percent.
  • Some items are taxed at preferential rates, such as net capital gains and qualified dividends.
  • Tax on these items is calculated separately from income taxed at ordinary rates.

Tax Prepayments

  • Pay-as-you-go system.
  • Payments already made toward tax liability, including:
    • Income taxes withheld from wages by the employer.
    • Estimated tax payments made during the year.
    • Taxes overpaid in the prior year and applied toward the current year’s liability.
  • If prepayments exceed tax liability after credits, the taxpayer receives a refund.

Filing Status

  • Married filing jointly
    • Must be married on the last day of the year.
    • If one spouse dies, the surviving spouse is considered to be married to the decedent spouse at year-end, unless the surviving spouse remarries before year’s end.
    • Joint and several liability for tax.
  • Married filing separately
    • Taxpayers are married but file separate returns.
    • Typically not beneficial from a tax perspective due to tax rates and other tax benefits.
    • May be beneficial for non-tax reasons.
    • No joint and several liability.
  • Married individuals treated as unmarried (abandoned spouse) if the individual:
    • Is married at the end of the year (or is not legally separated from the other spouse).
    • Does not file a joint tax return with the other spouse.
    • Pays > 1/2 the cost of maintaining a household that serves as the principal abode for a qualifying child for more than half the year.
    • Lived apart from the other spouse for the last six months of the year (other than temporary absences).
  • Qualifying surviving spouse
    • Available for the two years following the year of the spouse’s death.
    • The surviving spouse does not qualify if he or she remarries during the two-year period.
    • The surviving spouse must maintain a household for a dependent child.
  • Single
    • Unmarried unless qualifying for head of household.
  • Head of household
    • Unmarried or considered unmarried at the end of the year.
    • Not a qualifying surviving spouse.
    • Pays more than half the costs of keeping up a home during the year.
    • Lived in the taxpayer’s home with a “qualifying person” for more than half of the year (exception for parents).