When does an accrual-basis C corporation follow general accrual rules for income recognition, and when do tax rules require using the cash-received date instead?
Accrual-basis C corporations generally recognize income for tax purposes under the all-events test, which is met when:
1) The right to receive the income is fixed.
2) The amount can be determined with reasonable accuracy.
However, tax law contains exceptions where income must be recognized when received, even for accrual-basis taxpayers:
1) Advance rent — taxable when received.
2) Lease cancellation payments — taxable when received.
3) Prepaid interest — taxable when received.
4) Prepaid services — partially recognized in year received (limited deferral allowed under Rev. Proc. 2004-34).
5) Prepaid goods — follow accrual rules unless delivery has occurred.
Key rule: The accrual method is the default, but certain prepayments are taxed immediately due to specific IRS exceptions.
When does unsolicited property (like samples) count as gross income to a business?
Unsolicited property is included in gross income when both of the following are true:
1) The property received increases the taxpayer’s net worth.
2) The taxpayer accepts the property and exerts control over it.
For businesses, acceptance and control can be shown by:
1) Using the property,
2) Selling it, or
3) Donating it (e.g., taking a charitable deduction).
If both conditions are met, the property’s fair market value (FMV) must be included in gross income — unless there’s a specific statutory exclusion (which doesn’t apply to unsolicited business samples).
Key rule: If unsolicited samples increase a business’s net worth and the business uses or donates them, FMV is included in income.
What are the key tax rules and consequences of using the LIFO inventory method?
When a corporation uses the LIFO (Last-In, First-Out) method for tax purposes, the following rules apply:
1) The IRS requires companies to use the same inventory method for both tax and financial reporting (LIFO conformity rule).
2) Companies must obtain IRS permission (Form 3115) to switch to or from the LIFO method.
3) Under LIFO, cost of goods sold (COGS) is based on the most recently purchased inventory.
4) Ending inventory consists of the oldest (earliest-acquired) inventory still on hand.
5) In periods of rising prices, LIFO produces higher COGS and lower taxable income than FIFO.
Key rule: LIFO lowers taxable income in inflationary periods but requires IRS approval and conformity across tax and book reporting.
How does a C corporation calculate its Dividends Received Deduction (DRD) when receiving dividends from another domestic C corporation?
A C corporation can claim a Dividends Received Deduction (DRD) on dividends received from another domestic C corporation to reduce the effect of multiple layers of tax. The amount of the DRD depends on the recipient’s ownership percentage in the distributing corporation:
1) Less than 20% ownership – DRD is 50% of the dividend received.
2) At least 20% but less than 80% ownership – DRD is 65% of the dividend.
3) 80% or more ownership – DRD is 100%, effectively eliminating tax on the dividend.
The DRD is calculated by multiplying the dividend income received by the applicable percentage.
Key rule: A C corporation receiving dividends from another domestic C corporation can deduct a portion of the dividends based on its ownership percentage to avoid triple taxation.
Which types of tax credits are not available to corporations, and why?
Corporations can claim many tax credits, but some are restricted to individuals only. Key distinctions include:
1) Earned Income Credit (EIC) – Not available to corporations. It’s a refundable credit meant to offset payroll taxes for low-income individuals.
2) Foreign Tax Credit – Available to corporations. It offsets double taxation on foreign-source income.
3) Alternative Fuel Production Credit – Available to corporations involved in qualified fuel production.
4) General Business Credit – Available to corporations; it’s an umbrella category covering various business-related credits.
Key rule: The Earned Income Credit is a personal credit for individuals and cannot be claimed by C corporations. Most other business and refundable/nonrefundable credits can apply to corporations, depending on their activities.
How much of a business gift is deductible per recipient, and what are the IRS rules for calculating the deduction?
The IRS limits the deduction for business gifts to $25 per recipient per year. To apply this rule correctly, keep the following in mind:
1) Gifts costing $4 or less that have the business’s name on them and are distributed regularly (like pens or calendars) are considered promotional items and are not counted toward the $25 limit.
2) The $25 limit is per recipient, not per gift. It applies even if the business spends more than that per person.
3) Gifts given to customers, clients, or vendors are eligible for the deduction as long as the recipient is an individual (not an organization).
4) The business must maintain records showing the recipient’s name, gift description, date, cost, and business purpose.
Key rule: No matter how much is spent, only $25 per recipient per year is deductible unless the gift qualifies as a promotional item under the de minimis rule.
Which type of entity has the most flexibility in choosing an accounting year-end, and what are the general rules for other entities?
C corporations have the most flexibility when choosing an accounting period. They can select:
1) A calendar year,
2) A fiscal year, or
3) A 52–53 week year,
without needing IRS approval or justification.
Other entities face more restrictions:
1) S corporations and personal service corporations (PSCs) must use a calendar year by default, unless they have a valid business justification.
2) Partnerships and LLCs must align their year-end with the majority owner(s)’ tax year, unless they can justify a different year to the IRS.
3) Trusts and estates typically use a calendar year.
Key rule: Only C corporations can freely choose any accounting year-end without IRS permission. All other entities require IRS approval to use a non-default year.
When is a C corporation prohibited from using the cash method of accounting?
A C corporation is generally required to use the accrual method of accounting when:
1) Its average annual gross receipts exceed $30 million (for 2024 and beyond),
2) It is a tax shelter, or
3) It maintains inventory or capitalizes software costs under the UNICAP rules.
Entities meeting these criteria must use the accrual method to determine taxable income.
Additional notes:
1) Consistency in method is required, but that alone does not permit using any method.
2) A change in method typically requires IRS approval (Form 3115).
3) The accounting period (calendar vs. fiscal year) is separate from the accounting method (cash vs. accrual).
Key rule: C corporations with over $30 million in average gross receipts over the past three years must use the accrual method, even if they have no accounts receivable or inventory.
How should a C corporation using the accrual method report additional income when a prior year’s estimate turns out to be too low?
If a C corporation using the accrual method reports income based on a reasonable estimate, and later learns the actual amount was higher:
1) The additional income is reported in the year it becomes known.
2) The prior year’s return is not amended if the original estimate was reasonable.
3) This follows the annual accounting rule, which requires income to be reported year by year based on the information available at that time.
Key rule: As long as the original estimate was reasonable, any adjustment is picked up prospectively — not retroactively.
Can a C corporation deduct capital losses in excess of capital gains?
No. A C corporation can only deduct capital losses to the extent of capital gains. Any excess capital losses are:
1) Carried back 3 years to offset prior capital gains.
2) Carried forward 5 years to offset future capital gains.
3) Not deductible against ordinary income, unlike individuals (who may deduct up to $3,000).
Capital losses for C corporations are always treated as short-term, regardless of holding period.
Key rule: C corporations get no current-year deduction for net capital losses. Excess losses are carried back 3 years and forward 5 years, used only to offset capital gains.
If a C corporation has capital gains and capital losses in the same year, can it deduct the gain portion and carry forward only the excess losses?
A C corporation can only deduct capital losses to the extent of net capital gains — either from prior years or future years. Here’s how it works:
1) Capital gains and losses must be netted each year.
2) If the result is a net capital loss, the corporation gets no deduction in the current year.
3) The net capital loss is then:
- Carried back 3 years to offset prior net capital gains, and
- Carried forward 5 years to offset future net capital gains.
4) Capital losses cannot offset ordinary income.
Correction of common logic:
Even if the corporation has capital gains (e.g., $16,000), those are already included in the netting process. If the final result is a net loss, as in a $48,000 net capital loss, nothing is deductible that year — the entire amount must be carried to other years where net capital gains exist.
Key rule: C corporations may only deduct capital losses against net capital gains in other years — never against ordinary income or in a year where there’s a net capital loss.
How do you calculate “income before special deductions” on a corporate tax return (Form 1120), and what’s the common mistake to avoid?
“Income before special deductions” (Form 1120, Line 28) means:
1) Include all income, including dividends received from other corporations.
2) Subtract ordinary business expenses, like cost of goods sold, salaries, rent, etc.
3) Do not apply the Dividends Received Deduction (DRD) yet — it’s a special deduction taken after this subtotal.
Common mistake to avoid:
It’s easy to accidentally subtract the DRD or leave out the full dividend income at this step. The correct approach is to include the entire dividend amount in income, then subtract normal operating expenses only.
Example:
Sales = $500,000
Dividends received = $25,000
Cost of sales = $250,000
Income before special deductions = $500,000 + $25,000 − $250,000 = $275,000
Key rule: Always include dividends in full and ignore the DRD until after reaching “income before special deductions.”
Do C corporations, including personal service and personal holding companies, include 100% of dividends received from unrelated domestic corporations in gross income?
Yes. All C corporations — including Personal Service Corporations (PSCs) and Personal Holding Companies (PHCs) — must include 100% of dividends from unrelated domestic corporations in gross income.
- A PSC is a C corp that performs services in fields like health, law, or accounting, mainly through employee-owners.
- A PHC earns mostly passive income (e.g., dividends, interest) and is closely held by five or fewer individuals.
All C corps may then apply the Dividends Received Deduction (DRD) to reduce taxable income, not gross income. The DRD percentage depends on ownership: 50%, 65%, or 100%.
Key rule: Gross income always includes 100% of dividends. The DRD is a later deduction — not an exclusion,
How is a corporation’s state apportionment ratio calculated using an equally weighted three-factor formula?
1) States typically use three apportionment factors: sales, payroll, and property.
2) Under the equally weighted three-factor formula, each factor’s percentage is averaged:
(Payroll % + Sales % + Property %) ÷ 3
3) This average becomes the state’s apportionment ratio, applied to total income.
4) For example, in State B:
- Payroll = 50%, Sales = 25%, Property = 75%
- (0.50 + 0.25 + 0.75) ÷ 3 = 0.50 (or 50%)
What is the general business credit, and what does it include?
1) The general business credit is a combination of over 30 separate business tax credits (e.g., R&D credit, enhanced oil recovery credit).
2) It provides uniform rules for calculating, carrying back (1 year), and carrying forward (20 years) these credits.
3) It includes:
- Credits generated in the current year
- Carryforwards from prior years
- Carrybacks from future years
4) These credits are nonrefundable, but can reduce taxable income across multiple years.
5) It simplifies tax reporting and combines multiple incentives under one umbrella rule.
When is a C corporation required to use the accrual method of accounting?
1) A C corporation must use the accrual method if it has inventory and average annual gross receipts over $30 million for the past three years.
2) In this case, the corporation manufactures products (which involves inventory) and exceeds the gross receipts threshold.
3) The cash method is only allowed for:
- Businesses with gross receipts under $30 million
- Personal service corporations (PSCs)
- Certain farming operations
4) Large businesses that handle inventory must use the accrual method to clearly reflect income, matching revenues with related expenses.
Which types of taxpayers are allowed to use the cash method of accounting, and which are required to use the accrual method?
Who Can Use the Cash Method:
1) Small businesses with average annual gross receipts ≤ $30 million (3-year average).
2) Personal service corporations (PSCs) — including law firms, accounting firms, and medical practices.
3) Farming businesses — allowed regardless of gross receipts.
4) Partnerships that do NOT have a C corporation partner, as long as they are not tax shelters.
5) Sole proprietors and other non-tax shelter entities that qualify as small businesses.
Who Must Use the Accrual Method:
1) C corporations with average annual gross receipts > $30 million over the past 3 years.
2) Partnerships that have a C corporation as a partner, unless the partnership qualifies as a small business and is not a tax shelter.
3) Tax shelters — regardless of business type or income level.
4) Inventory businesses must use accrual if average gross receipts exceed $30 million.
What are the rules for deducting charitable contributions made by a C corporation?
1) C corporations can deduct charitable contributions up to 10% of taxable income, before the deduction and before NOLs or DRD are applied.
2) Contributions must be paid during the year to qualify, unless the board authorizes them by year-end and payment is made within 3.5 months of the following year.
3) For accrual-basis corporations, this means authorized contributions paid by April 15 (for calendar year-end) are deductible.
4) In this case, Tapper Corp can deduct both the $10,000 paid and the $30,000 accrued, since it was board-authorized and paid on time.
5) Total deduction = $40,000, which is under the 10% cap of $50,000 (10% of $500,000 taxable income).
Cable Corp. is a calendar-year C corporation. In the current year, it contributed $80,000 to a qualified charity. Its taxable income (before any charitable deduction) is $820,000 and includes a $40,000 dividends received deduction (DRD). Cable also has $10,000 of unused charitable contributions from a prior year.
How much can Cable deduct for charitable contributions this year?
1) A C corporation can deduct up to 10% of modified taxable income for charitable contributions.
2) Modified taxable income = taxable income + DRD + NOL or capital loss carrybacks
3) In this case:
- Taxable income = $820,000
- Add back DRD = $40,000
- Modified taxable income = $860,000
- 10% × $860,000 = $86,000 deduction limit
4) Cable gave $80,000 this year and had $10,000 carried forward → total of $90,000 in contributions
5) Since the limit is $86,000, Cable can deduct $86,000 and carry forward the extra $4,000 to use in a future year.
Cable Corp., a C corporation, has the following for the year:
A net operating loss (NOL) from operations of $500,000
A long-term capital gain of $20,000
A short-term capital loss of $50,000
What is Cable’s deductible loss for the year, and how are capital losses treated?
1) C corporations must separate capital gains/losses from business income.
2) Capital losses can only offset capital gains — they cannot reduce ordinary business income.
3) Here, Cable has a net capital loss of $30,000 ($50,000 loss − $20,000 gain).
4) That $30,000 cannot be deducted this year, so it is carried forward to use against capital gains in future years.
5) The $500,000 NOL from operations is fully deductible this year.
Final deductible loss for the year: $500,000
The $30,000 capital loss is not included — it’s saved for later.
How is a C corporation’s charitable contribution base calculated?
🧾 A C corporation’s contribution base is its taxable income before:
- ❌ The charitable contribution deduction itself
- ❌ The dividends received deduction (DRD)
- ❌ Any net operating loss or capital loss carrybacks
✅ Include:
- Operating income
- + Charitable contributions added back
- + Dividends from domestic corporations
📊 Example from snip:
- Reported income (after $10,000 contributions): $160,000
- Add back: + $10,000 (contributions)
- Add: + $2,000 (dividends)
= Contribution base: $172,000
Which of the following items are included in a C corporation’s taxable income?
- Gross receipts
- Other income
- Deductible expenses
- Net capital loss
Gross receipts – Included
- Other income – Included
- Deductible expenses – Subtracted
- Net capital loss – Excluded (unless capital gains exist)
Rule:
- C corps can only deduct capital losses against capital gains. Only individuals can deduct 3k capital loss
- No deduction is allowed against ordinary income for Ccorps
- Unused capital losses are carried back 3 years and forward 5 years to offset capital gains only.
How are capital gains and losses treated when calculating a C corporation’s taxable income?
- Net capital gains are fully included in taxable income
- Capital losses are deductible only against capital gains (not ordinary income)
- Excess capital losses are not deductible in the current year
- Instead, they are carried back 3 years and forward 5 years
✅ C corps can only use capital losses to offset capital gains — never regular income
What creates nexus for state income tax purposes?
A business establishes nexus (taxable presence) in a state if it:
- Owns property in the state (e.g. buys an office building) ✅
- Has employees doing more than soliciting sales
- Provides services or earns income from sources other than selling tangible goods
But NOT if it only:
- Sells goods into the state (via interstate shipping)
- Hires contractors to solicit sales
- Purchases goods from in-state suppliers
✅ Property ownership or business activity beyond sales triggers nexus for income tax
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