| Course | ACC 456 Individual/Estate Taxation (ACC/456) |
|---|---|
| Week | 1 |
| Paper type | Individual tax formula and filing status paper |
| Length | about 1,015 words, 4 double-spaced pages plus title page and references |
| Format | APA 7 student paper |
| School | University of Phoenix |
| Program | BS in Accounting |
| Updated | September 2026 |
Free sample paper for ACC 456 Week 1
Two Households, One Formula: Walking a Married Couple and a Single Parent Through the 2025 Individual Tax Formula and Choosing Each One's Filing Status
[Student Name]
University of Phoenix
ACC/456: Individual/Estate Taxation
Week 1 Assignment
[Instructor Name]
[Date]
The households and all figures are composites written for a model paper; 2025 rates and amounts come from the sources listed.
Two related households in a mid-sized city are preparing their 2025 federal returns. The first is a married couple with two children; the second is the wife's younger sister, divorced two years ago, who lives with her eight-year-old son. Both want to know what they owe, and the sister is unsure which status she may use. The tax formula is the same for everyone; what changes the answer is where each household's facts enter it. This paper applies the formula to each and explains the filing status choice.
The Formula
The individual income tax follows a fixed sequence. Gross income, all income from whatever source unless excluded, is reduced by adjustments to reach adjusted gross income. The greater of the standard deduction or itemized deductions, and any qualified business income deduction, is subtracted to reach taxable income. Tax is computed from the rate schedule for the filing status, then reduced by credits and compared with payments (Internal Revenue Service, 2025a).
The Couple's Income and Adjustments
The spouses earned wages of $118,000 and $46,000 and $1,200 of taxable bank interest, for gross income of $165,200. They contributed $4,300 to a health savings account outside payroll, which is an adjustment. Adjusted gross income is $160,900.
Standard or Itemized
The couple paid $14,200 of mortgage interest, $11,800 of state income and property taxes and $3,000 to charities, a total of $29,000 in itemized deductions. The 2025 standard deduction for married couples filing jointly is $31,500 (Internal Revenue Service, 2025b). Because the standard deduction is larger, they take it. Taxable income is $129,400.
Computing the Tax
Rates apply in layers. For joint filers in 2025, the first $23,850 is taxed at 10%, $2,385. The next $73,100, up to $96,950, is taxed at 12%, $8,772. The remaining $32,450 is taxed at 22%, $7,139. Tax before credits is $18,296. Their marginal rate is 22%, but their average rate on taxable income is about 14%.
Credits and Payments
Both children are qualifying children under 17 with Social Security numbers, so the couple claims the child tax credit of $2,200 per child for 2025, $4,400 in total. Their income is well below the level at which the credit phases out. Tax after credits is $13,896. Their employers withheld $15,200, so they will receive a refund of about $1,304.
What the Adjustment Was Worth
The $4,300 health savings account contribution shows why position in the formula matters. As an adjustment, it reduced adjusted gross income whether or not the couple itemized, and because their last dollars of income fall in the 22% bracket, it saved them about $946 of federal tax. Lower adjusted gross income can also help with credits and deductions that phase out as income rises. Had the same $4,300 been an itemized deduction, it would have saved nothing, since the couple took the standard deduction. Contributions made through an employer's cafeteria plan would have produced the same federal result by keeping the money out of wages in the first place, and would also have avoided payroll taxes.
Dependents
Each child is a qualifying child because each is related to the couple, under age 19 at year end, lived with them for more than half the year and did not provide over half of his or her own support. A qualifying child can be claimed by only one taxpayer, which is why divorced parents often need a written release to decide who claims a child in a given year.
Joint or Separate
Married couples may file jointly or separately. Filing separately would give each spouse half of the joint standard deduction and brackets, which usually produces a higher combined tax, and it would also limit or remove some credits and deductions. For this couple, separate returns would raise combined tax, and there is no special reason, such as separate liability concerns or an income-driven student loan plan, to file separately. Alm and Whittington (1999) found that the tax treatment of married couples can influence decisions about marriage at the margin, a reminder that filing status rules shape behavior as well as revenue.
The Sister's Filing Status
The sister is unmarried at year end. She paid the rent, utilities and groceries for the apartment she shares with her son, well over half of what it cost to run the household, and her son lived with her all year. He is her qualifying child: he meets the relationship, age, residency and support tests. She therefore qualifies as head of household.
The Sister's Tax
She earned wages of $52,000 with no adjustments. The 2025 standard deduction for head of household is $23,625, so her taxable income is $28,375. For heads of household, the first $17,000 is taxed at 10%, $1,700, and the remaining $11,375 at 12%, $1,365, for tax of $3,065. She claims the child tax credit of $2,200, leaving tax of $865. Her employer withheld $2,400, so she will receive a refund of about $1,535, and she should also check whether she qualifies for the earned income credit, which phases out as income rises.
Had she filed as single, her standard deduction would have been $15,750 and her 10% bracket would have ended at $11,925. Her taxable income would have been $36,250, and her tax before credits about $4,112. Head of household status saves her about $1,047 before credits.
Why the Formula Is Built This Way
The formula separates adjustments, which are available whether or not a taxpayer itemizes, from itemized deductions, and it places credits after the tax computation so that they are worth the same dollar amount to taxpayers in any bracket. Filing statuses adjust the standard deduction and brackets to recognize household size and the cost of supporting others.
Conclusion
The couple's $165,200 of gross income produced $129,400 of taxable income and $13,896 of tax after the child tax credit, with a refund. The sister's head of household status gave her a larger standard deduction and wider brackets than single status, saving about $1,047 before her credit.
References
Alm, J., & Whittington, L. A. (1999). For love or money? The impact of income taxes on marriage. Economica, 66(263), 297-316. https://doi.org/10.1111/1468-0335.00171
Internal Revenue Service. (2025a). Your federal income tax: For individuals (Publication 17). https://www.irs.gov/publications/p17
Internal Revenue Service. (2025b). Dependents, standard deduction, and filing information (Publication 501). https://www.irs.gov/publications/p501
What the ACC 456 Week 1 instructions ask
For ACC 456 Week 1, students generally lay out the structure of the individual income tax and then apply it to a taxpayer. Common requirements include the tax formula from gross income through adjustments, adjusted gross income, the standard or itemized deduction, taxable income, tax from the rate schedules, credits and payments. Most versions also cover filing status, the tests for qualifying child and qualifying relative dependents and the effect of status on deductions and brackets. Some prompts give a household's facts and ask for a computation; others ask for an explanation of why the system is designed this way. Students should show each step and cite IRS guidance and the Code in APA style.
How this ACC 456 Week 1 example is built
Two related households let the paper show both the formula and the choice of status without inventing unusual facts. The couple's computation is laid out line by line, from wages and interest to the refund, so the reader can follow each step of the formula. The joint and separate filing comparison is done briefly to show why most married couples file jointly. The sister's case turns on the head of household tests: unmarried, paying more than half the cost of keeping up a home and living with a qualifying child. Her tax is computed under head of household and compared with single status. A final section connects the formula to the ideas behind it.
ACC 456 Week 1 grading rubric: where the points go
The rubric for this week typically rewards correct sequencing of the formula, correct use of current-year amounts and correct determination of filing status and dependents. Faculty check that adjustments come before adjusted gross income, that the larger of the standard or itemized deduction is used, that the brackets for the correct status are applied in layers rather than as a single rate and that credits reduce tax after it is computed. Filing status must be supported by the tests. Comparisons that show why one status or choice is better earn more credit. Accurate arithmetic, a clear structure and citations of IRS publications and the Code complete the marks.
ACC 456 Week 1 help: mistakes to avoid
The most common ACC 456 Week 1 error is applying the top bracket rate to all taxable income instead of taxing each layer at its own rate. Build the tax bracket by bracket. Another mistake is subtracting the child tax credit from taxable income; credits reduce the tax itself. Students also confuse adjustments, which reduce income before adjusted gross income, with itemized deductions, which come after. Check the head of household tests carefully, especially the requirement to pay more than half the cost of the home. Use the current year's standard deduction and brackets, which change each year. Finally, explain why a status or choice is better in words, not just numbers.
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- ACC 456 Week 2: Gross Income and Exclusions
- ACC 456 Week 3: Deductions and Credits
- ACC 456 Week 4: Property Transactions and Basis
- ACC 456 Week 5: Estate and Gift Taxation
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ACC 456 Week 1 questions, answered
What does ACC/456 Week 1 usually cover?
It usually covers the individual income tax formula, filing status, dependents and the standard deduction, often with a computation for a sample household.
Where can I find a free ACC 456 Week 1 sample paper?
This page shows two households worked through the 2025 formula with filing status explained in margin notes, free for anyone to read. Share your own household facts and we will draft the first paper at no cost.
What is the 2025 standard deduction?
For 2025 it is $31,500 for married couples filing jointly, $23,625 for heads of household and $15,750 for single filers and married individuals filing separately, with extra amounts for those 65 or older or blind.
Who qualifies as head of household?
An unmarried taxpayer who pays more than half the cost of keeping up a home for the year and lives there with a qualifying person, such as a qualifying child, for more than half the year.
What is the difference between an adjustment and a deduction?
Adjustments, such as HSA contributions, reduce gross income to arrive at adjusted gross income; the standard or itemized deductions are then subtracted from adjusted gross income.
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