FinancePracticeTestTax

Practice Set: Calculating Returns and Tax Implications from a $4M Asset Sale

UUnknown

2026-03-08

12 min read

Real-world practice set using Uncommon Cents' $3.92M ASA sale: compute realized gains, cost basis, and 2026 tax scenarios with solutions.

Hook: Turn a real $4M asset sale into high-value practice for finance and tax students

Struggling to translate headline transactions into crisp calculations for realized gains and tax outcomes? Youre not alone. Students and instructors often lack realistic, graded problem sets that mirror modern broker reporting and 2026 tax enforcement realities. This practice set uses the actual Q4 2025 sale by Wisconsin-based Uncommon Cents Investing of 77,370 shares of ASA (estimated proceeds $3.92M) to build a multi-part exam: compute cost basis, allocate holding periods, calculate realized gains, and model tax liabilities under several 2026 scenarios.

Why this matters now (2026 trends & context)

Late 2024 through 2025 brought sharper IRS focus on third-party reporting, and brokers improved lot-level reporting on 1099-Bs. By 2026, tax preparers and investors are expecting more granular cost-basis data and automated lot-selection tools integrated with RIA and retail platforms. That makes accurate lot accounting and strategic lot identification a practical skill—especially when a multi-million-dollar block trade like the Uncommon Cents sale lands on a funds activity report.

Broker reporting upgrades: more detailed 1099-Bs and lot history in 2025-26 make reconciliation an exam-worthy skill.
Enforcement & automation: the IRS and state agencies increased matching of reported gains; students must simulate real-world adjustments such as allocated selling costs and wash-sale rules.
Tax planning techniques are in play: lot selection, tax-loss harvesting, and entity-level structuring matter for multi-million sales.

Setup: Facts you need (use these for every problem)

Base transaction (reported): Uncommon Cents Investing sold 77,370 shares of ASA in Q4 2025; estimated transaction value = $3.92 million (based on quarterly average prices). For practice calculations, assume:

Gross proceeds: $3,920,000.
Transaction costs (block trade fees, commissions, clearing): $10,000 (assumed; allocate pro rata when requested).
Share lots held by the investor/fund before the sale (total 100,000 shares):
- Lot A: 50,000 shares purchased 2016-03-15 at $10.00/share (long-term).
- Lot B: 30,000 shares purchased 2022-06-01 at $30.00/share (long-term as of sale date).
- Lot C: 20,000 shares purchased 2025-06-01 at $60.00/share (short-term as of sale date).
Total pre-sale cost basis (all 100,000 shares) = 50,000*$10 + 30,000*$30 + 20,000*$60 = $2,600,000.
Sale date for the 77,370 shares: December 2025 (so Lot C is short-term).

Quick reference formulas

Realized gain (gross) = Gross proceeds - Cost basis of shares sold - Selling expenses (if deducted at sale).
Per-share sale price (approx) = Gross proceeds / shares sold = $3,920,000 / 77,370 ≈ $50.67 per share (rounded).
Lot-level gain = (Sale price per share * shares sold from lot) - (Cost basis of that lot) - (allocated selling expense).

Practice problems (timed): 90 minutes recommended

These problems are designed as a timed exam: 90 minutes total. Part I (40 minutes), Part II (30 minutes), Part III (20 minutes). Use the dataset above. Show formulas and steps.

Part I Cost basis & realized gain (40 minutes)

Compute realized gains under three lot-accounting methods. Use gross proceeds of $3,920,000 and selling expenses of $10,000 (allocate on a per-share basis unless otherwise instructed).

FIFO (first-in, first-out): identify which lots are deemed sold under FIFO and compute the realized gain.
Specific identification (investor selects lots to minimize taxable gain): assume the investor elects to sell highest-basis shares first (Lot C, then Lot B, then Lot A as needed). Compute the realized gain.
Average cost basis (note: allowed for some mutual funds/ETFs but not for most individual equities): compute realized gain if average-cost is permitted.

Part II Holding period & tax characterization (30 minutes)

Using results from Part I, split each realized gain into long-term and short-term components and show the tax characterization.

Under FIFO: determine how much of the gain is long-term vs short-term and explain why.
Under specific ID (high-basis-first): determine LT vs ST gain/loss components and net them.

Part III Tax liability scenarios (20 minutes)

Calculate federal tax owed for the sale in two taxpayer scenarios. For simplicity, assume no other capital transactions in the year and allocate the $10,000 selling cost pro rata by share sold.

Scenario A: Single taxpayer with taxable ordinary income (before this sale) of $120,000. Apply a 15% long-term capital gains rate to long-term gains and ordinary marginal rate 24% to short-term gains or losses. No Net Investment Income Tax (NIIT) applies, and assume no state tax.
Scenario B: High-income taxpayer (married filing jointly) with AGI of $1,000,000. Apply 20% long-term capital gains rate, plus 3.8% NIIT on net investment income (if applicable), and assume state tax of 5% on taxable gains. Include short-term gains taxed at ordinary rates (assume 35% marginal rate for ordinary income).

Answer key & worked solutions (step-by-step)

Part I solutions

Step 0: Per-share sale price and expense allocation

Per-share gross sale price p = 3,920,000 / 77,370 ≈ $50.67.
Selling expense per share = 10,000 / 77,370 ≈ $0.1293 per share (allocate pro rata).

1) FIFO

Under FIFO, the earliest-acquired shares are deemed sold first. The sale of 77,370 shares consumes:

Lot A: first 50,000 shares @ $10.00 = basis $500,000 (long-term).
Lot B: next 27,370 shares @ $30.00 = basis $821,100 (long-term). (Remaining Lot B shares after sale: 2,630.)

Total cost basis of shares sold = 500,000 + 821,100 = $1,321,100.

Net proceeds after selling expenses = 3,920,000 - 10,000 = $3,910,000.

Realized gain (FIFO) = 3,910,000 - 1,321,100 = $2,588,900 (all long-term in this scenario).

2) Specific identification (highest-basis-first)

The investor chooses to sell the highest-basis shares first to minimize gains. Order sold: Lot C (20,000 @ $60), Lot B (30,000 @ $30), then 27,370 from Lot A (27,370 @ $10).

Lot C basis sold = 20,000 * $60 = $1,200,000 (short-term lot; can create ST loss).
Lot B basis sold = 30,000 * $30 = $900,000 (long-term).
Lot A basis sold = 27,370 * $10 = $273,700 (long-term).

Total basis of shares sold = 1,200,000 + 900,000 + 273,700 = $2,373,700.

Realized gain (specific ID) = 3,910,000 - 2,373,700 = $1,536,300 (mixed LT/ST; see Part II).

3) Average-cost basis (mutual fund/ETF style)

Average basis per share = Total basis / total shares = 2,600,000 / 100,000 = $26.00 per share.

Basis of shares sold = 77,370 * 26 = $2,011,620.

Realized gain (average cost) = 3,910,000 - 2,011,620 = $1,898,380 (character depends on holding-period rules for the fund shares; often pro rata).

Part II solutions: holding period split

FIFO characterization

All shares sold under FIFO were from Lot A (2016) and Lot B (2022) => both long-term. Therefore, the entire gain under FIFO ($2,588,900) is long-term.

Specific ID characterization

Break the realized gain by lot using gross proceeds allocation (sale price per share approx $50.67):

Lot C (20,000 shares): proceeds ≈ 20,000 * 50.67 = $1,013,400. Basis = 1,200,000 ⇒ short-term loss ≈ $-186,600.
Lot B (30,000 shares): proceeds ≈ 30,000 * 50.67 = $1,520,100. Basis = 900,000 ⇒ long-term gain ≈ $620,100.
Lot A (27,370 shares): proceeds ≈ 27,370 * 50.67 = $1,386,837.90 (rounded). Basis = 273,700 ⇒ long-term gain ≈ $1,113,137.90.

Net long-term gain ≈ 620,100 + 1,113,138 = $1,733,238. Net short-term loss ≈ $-186,600. Net realized gain = 1,733,238 - 186,600 = $1,546,638 (minor rounding variance vs Part I total $1,536,300 due to rounding and fee allocation; instructors should allow small rounding tolerances).

Part III solutions: tax liability scenarios

Assume the $10,000 selling cost was already subtracted (we used 3,910,000 net proceeds above). We'll use the Part I realized gain totals and the Part II LT/ST splits under specific ID for these calculations.

Scenario A: Single taxpayer, ordinary income $120,000

Assumptions: long-term capital gains taxed at 15%; short-term gains taxed at ordinary marginal rates (assume 24%); no NIIT; no state tax.

FIFO outcome (all LT gain $2,588,900): tax = 2,588,900 * 0.15 = $388,335.
Specific ID outcome: LT gain = $1,733,238 => LT tax = 1,733,238 * 0.15 = $259,986. Short-term loss = $186,600 => reduces ordinary taxable income; tax savings = 186,600 * 0.24 = $44,784. Net tax on sale = 259,986 - 44,784 = $215,202.

Practical takeaway: under these assumptions, specific-lot selection saved roughly $173k of federal tax compared with FIFO on the same economic sale.

Scenario B: High-income taxpayer, AGI $1,000,000 (MFJ)

Assumptions: LTCG taxed at 20%, plus NIIT 3.8% on net investment income, state tax 5% on gains; short-term taxed at 35% ordinary marginal rate.

FIFO: realized LT gain = $2,588,900.
- Federal LTCG = 2,588,900 * 20% = $517,780.
- NIIT = 2,588,900 * 3.8% = $98,378.20.
- State tax = 2,588,900 * 5% = $129,445.
- Total tax ≈ 517,780 + 98,378.20 + 129,445 = $745,603.20.
Specific ID: net LT gain ≈ 1,733,238; ST loss = 186,600.
- LT federal = 1,733,238 * 20% = $346,647.60.
- NIIT applies to net investment income: ≈ (1,733,238 - 186,600) = 1,546,638 → NIIT = 1,546,638 * 3.8% = $58,847.64. (Exact NIIT calculation uses MAGI thresholds; this is illustrative.)
- State tax on net gain = 1,546,638 * 5% = $77,331.90.
- Short-term loss reduces ordinary income: tax saving at 35% = 186,600 * 35% = $65,310 (a reduction in ordinary income tax, partially offsetting NIIT/state impacts depending on state rules).
- Net tax on sale ≈ 346,648 + 58,848 + 77,332 - 65,310 = $417,518 (illustrative).

Key insight: precise lot selection and recognizing short-term losses can materially lower combined federal + NIIT + state taxes in high-income situations.

Exam-style follow-up questions (grading rubric included)

(8 points) Compute the realized gain under FIFO. Award 4 pts for correct lot identification, 4 pts for arithmetic accuracy within 1%.
(12 points) Show a specific-ID allocation that minimizes tax and compute the LT/ST split. Award 6 pts for correct lot selection logic, 6 pts for numerical accuracy and correct classification.
(10 points) For Scenario B, provide line-item federal + NIIT + state taxes. Award 5 pts for NIIT reasoning and 5 pts for final numeric answer within 2%.
(5 points) Short essay: Describe two practical limitations when applying specific-lot sales in funds and retail accounts in 2026. (Wash-sale rules, broker lot availability, recordkeeping.)

Advanced strategies & 2026 best practices (actionable takeaways)

Always reconcile broker 1099-B lot history: In 2026, many platforms provide per-lot cost and holding period. Reconcile to internal records before electing specific ID on Form 8949.
Elect specific-identification in writing: To use lot-level selection for tax reporting you must notify the broker or specify the lots at trade time (or by broker-provided procedures). Document your election and retain confirmations.
Allocate selling expenses consistently: When calculating realized gains, apply block trade fees pro rata across sold shares; record the allocation and show it on your gain schedule.
Monitor NIIT triggers: For high-income taxpayers, small shifts in lot selection can change NIIT exposure materially; model combined federal + NIIT + state impacts (as shown above).
Use tax-loss harvesting windows: If fund managers expect price rebounds, small tactical sales to realize losses in other positions can offset gains from large block trades.

Note: This practice set models one real-world headline transaction and builds realistic, graded problems you can use in timed exams or classroom assignments. Always consult current IRS guidance for filing procedures and exact rate thresholds for the tax year in question (2026 and later updates).

Common pitfalls (graded deduction checklist)

Forgetting to subtract selling expenses from proceeds (deduct 1-2 points).
Mismatching holding periods when using FIFO vs specific ID (common 2-4 point deduction).
Using average cost for individual ordinary shares (deduct up to 5 points if incorrectly applied to non-fund securities).
Not documenting lot-election instructions (administrative penalty in real life; exam note/point deduction).

How instructors can use this in a course or certification prep

Turn Part I into a timed calculator-free quiz to test manual arithmetic and reconciliation skills.
Assign Part II as a short case study and require students to submit the Form 8949 mock-up with lot IDs, codes, and adjustments.
Use Part III as a capstone: students submit a two-page memo to a hypothetical CIO recommending the optimal tax-lot method and expected after-tax proceeds.

Final actionable checklist (use this after every practice problem)

Reconcile gross proceeds to broker confirmation.
Confirm lot acquisition dates and cost per share from brokerage history or internal books.
Decide lot selection method and document it in writing or trade notes.
Allocate transaction costs and compute net proceeds.
Split gains by holding period, compute federal/state/NIIT impact, and draft a one-paragraph recommendation.

Call to action

Ready to grade yourself? Download the timed PDF version of this practice set, use our automated grading rubric, or try the interactive version with instant feedback on onlinetest.pro. Sign up for the advanced module to get downloadable Form 8949 templates and 2026 tax-rate scenario calculators specifically tailored for headline transactions like Uncommon Cents ASA sale.

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