Integrated case analysis for US practice

The CPA Exam tests sections separately, but practice does not. A new associate at a firm, or a staff accountant in industry, meets problems that cut across financial reporting, tax, audit and business law in the same afternoon. This lesson works through an integrated case that combines the sections, using Copperline Outdoor Gear Inc., an invented company based in Chattanooga, Tennessee. The aim is to practice moving between areas, to see how a conclusion in one changes the analysis in another, and to prepare for the exam's simulations, which increasingly combine topics within a section. Every company, person and figure is invented.

The Copperline case

Copperline Outdoor Gear Inc. designs and makes tents, packs and camping furniture, and sells through outdoor retailers and its own website. It is a C corporation owned by its two founders, Nadia Bertrand and Joel Kowalczyk, with 40 percent each, and a regional private equity fund with 20 percent and a board seat. Revenue for 2026 is about 31 million dollars and pre-tax income about 3.1 million. Copperline's bank requires audited financial statements and a leverage covenant of 3.25 times net debt to EBITDA. In 2026 Copperline bought a new cutting line for 1.2 million dollars, is negotiating a distribution agreement with a large retailer, and is considering converting to an S corporation or forming an LLC for a new rental business. The CFO, a CPA, has asked you, a senior associate at the company's audit and tax firm, for a memo on the issues. Before answering, consider your role: your firm audits Copperline and prepares its tax returns, so independence limits what you may do.

Tax and financial reporting: the cutting line

The cutting line is placed in service in 2026. Under the 2025 tax act, 100 percent bonus depreciation is permanent for qualifying property acquired after January 19, 2025, so Copperline can deduct the full cost for tax. For financial reporting, it depreciates the line straight-line over eight years. The difference creates a temporary difference and a deferred tax liability under ASC 740. The program below computes the effect and checks whether the addition is material to the audit.

# Integrated US case: Copperline Outdoor Gear Inc. buys a 1.2 million dollar cutting line
# in 2026 (all figures invented). Tax: 100% bonus depreciation; books: 8-year straight line.
cost, rate, book_life = 1_200_000, 0.21, 8
tax_dep, book_dep = cost, cost / book_life
temp_diff = tax_dep - book_dep
dtl = temp_diff * rate
print(f"Tax depreciation {tax_dep:,.0f}; book depreciation {book_dep:,.0f}")
print(f"Temporary difference {temp_diff:,.0f}; deferred tax liability {dtl:,.0f} (ASC 740)")
print(f"Current federal tax saved in 2026: {(tax_dep - book_dep) * rate:,.0f}")
# Audit angle: is the asset addition material? Overall materiality 5% of pre-tax income.
pretax = 3_100_000
mat = 0.05 * pretax
print(f"Materiality {mat:,.0f}; the addition is {cost / mat:.1f} times materiality -> vouch it")
# Attest angle: the lender wants an agreed-upon procedures report on the covenant
print("Engagement for the lender: agreed-upon procedures (AT-C 215), not an audit opinion")

Tax depreciation 1,200,000; book depreciation 150,000
Temporary difference 1,050,000; deferred tax liability 220,500 (ASC 740)
Current federal tax saved in 2026: 220,500
Materiality 155,000; the addition is 7.7 times materiality -> vouch it
Engagement for the lender: agreed-upon procedures (AT-C 215), not an audit opinion

Tax depreciation of 1.2 million dollars against book depreciation of 150,000 creates a temporary difference of 1.05 million and a deferred tax liability of 220,500 dollars at the 21 percent federal rate, ignoring state tax for simplicity. Current federal tax falls by the same amount in 2026, which helps cash flow. The addition is 7.7 times overall materiality of 155,000 dollars, so the audit team will vouch it to the invoice and contract, confirm the placed-in-service date that drives both the tax deduction and depreciation, and test the deferred tax calculation. One asset, three sections of the exam: REG for the deduction, FAR for the deferred tax and AUD for the testing.

Revenue and business law: the retailer agreement

The proposed agreement with the retailer includes a slotting fee that Copperline would pay to obtain shelf space, a right for the retailer to return unsold product within 90 days, and a clause that title passes when the goods are delivered to the retailer's distribution center. Under ASC 606, consideration payable to a customer, such as the slotting fee, reduces the transaction price unless it is payment for a distinct good or service; a right of return is variable consideration, so Copperline recognizes revenue only for the amount it expects not to be returned, with a refund liability and an asset for the expected returns. From a business law perspective, the agreement is a sale of goods governed by UCC Article 2; between merchants, additional terms in the retailer's acceptance may become part of the contract unless they materially alter it or Copperline objects. The CFO should have counsel review the terms, and the accounting team should prepare a revenue memo before the agreement is signed, so that the commercial terms are understood in accounting terms.

Entity choice: S corporation or LLC

The founders ask whether Copperline should elect S corporation status to avoid double taxation. The first question is eligibility: an S corporation may have no more than 100 shareholders, all of them individuals, certain trusts or estates, and only one class of stock. Copperline's private equity fund is almost certainly an ineligible shareholder, such as a partnership or corporation, so Copperline cannot elect unless the fund's interest is restructured or bought out. Even if it could, a C corporation that converts faces the built-in gains tax on appreciation that existed at conversion if assets are sold within five years. A better route for the new rental business may be a separate LLC taxed as a partnership, owned by the founders and possibly Copperline, which passes income through and allows flexible allocations. That structure raises its own questions: transfer pricing for equipment the LLC rents from Copperline, related-party disclosures in Copperline's statements and the self-employment tax position of the founders. This is advice the firm may give as tax adviser, but the audit team must ensure it does not take management responsibilities.

Attestation and independence

The bank wants a report on Copperline's covenant calculation each quarter. Because the bank defines what it wants checked, an agreed-upon procedures engagement under AT-C 215 is a natural fit: the firm performs procedures the bank and Copperline agree are appropriate, such as recomputing the ratio from the general ledger and comparing EBITDA with the audited statements, and reports its findings without an opinion. If the bank instead wants assurance on whether Copperline complied with the covenant, an examination or review under the attestation standards would be needed. Independence is required for both, and the firm already audits Copperline, which is consistent. What the firm must not do is prepare the covenant calculation and then report on it, which would create a self-review threat, or advise the bank on whether to lend.

Covenant pressure and audit risk

Copperline's draft EBITDA gives leverage of about 3.18 times, close to the 3.25 limit. If the slotting fee and expected returns under the new agreement reduce revenue more than management expects, or if a year-end cut-off error is found, the covenant could be breached. That pressure raises the risk of material misstatement due to fraud: management has an incentive to accelerate revenue or understate the returns estimate. The audit plan should treat revenue cut-off and the returns estimate as significant risks, test journal entries near year end and evaluate management's estimates for bias. If a breach is likely, the auditor must evaluate whether there is substantial doubt about Copperline's ability to continue as a going concern and whether management's plans, such as obtaining a waiver, alleviate it. Lesson 12's practice set returns to this.

State and local tax points

Integrated cases often hide a state tax issue. Not every state follows federal bonus depreciation, so Copperline should check how Tennessee's franchise and excise taxes treat the cutting line, and a company with operations in several states must track separate depreciation schedules for states that decouple. Copperline's website sales create sales tax obligations in states where it exceeds economic nexus thresholds under the Wayfair decision, and its new retailer agreement may shift sales into states where it has not yet registered. A rental LLC operating in more than one state may need to file partnership returns and withhold or pay tax for nonresident members, and may be eligible for a state pass-through entity tax election. A memo that mentions these points briefly and recommends that the state tax team review them shows the breadth an employer expects.