S corporations sit at an awkward intersection of tax law. As Jeremy Wells, EA, CPA, explains in Episode 28 of Tax in Action, they’re hybrid entities that blend the tax and accounting rules of corporations with pass-through entities like partnerships. This blending creates something that exists solely in federal tax law. There’s no such thing as an “S corporation” in everyday business activity. It’s a creation of Subchapter S of the Internal Revenue Code, a tax fiction that forces us to track three different ledgers, often confusing even experienced practitioners.
Jeremy frames these three ledgers with a simple framework: retained earnings answers what happened, AAA (Accumulated Adjustments Account) determines what kind, and stock basis tells us how much. Each serves a distinct purpose, and understanding their differences is critical to avoiding costly errors in S corporation taxation.
Three Measures, Three Different Questions
The confusion starts because these ledgers often produce identical numbers, especially in simple scenarios. This similarity lulls practitioners into thinking they should always match. But as Jeremy emphasizes throughout the episode, each ledger answers a fundamentally different question about the S corporation and its shareholders.
Retained Earnings: What Happened Over Time
Retained earnings is the most familiar concept. It shows accumulated undistributed profits over the corporation’s lifetime. At the end of each accounting period, net income and distributions close out to retained earnings, leaving you with a running total of everything the corporation earned but didn’t pay out.
Critically, retained earnings has no floor. It can be a negative number if a corporation distributes more than it ever earned, or if it has accumulated losses over time. As Jeremy notes, some GAAP rules suggest calling negative retained earnings “accumulated losses.”
Unlike the C corporation’s Form 1120, Form 1120-S doesn’t include a retained earnings reconciliation. The IRS knows this. Jeremy points to IRM 4.10.3.8.2.2, which instructs examiners to review retained earnings for unexplained increases, as such jumps often indicate unreported income. If you can’t explain every change in retained earnings, an examiner will ask you to.
AAA: What Kind of Income
The Accumulated Adjustments Account might be, as Jeremy calls it, “one of the most misunderstood concepts of the S corporation as a whole.” It tracks the accumulated undistributed pass-through taxable income of the S corporation. That doesn’t include all profits, just the S corporation’s pass-through earnings.
History can explain why this distinction matters. Subchapter S was added to the tax code in the late 1950s, roughly two decades before Wyoming passed the first LLC law. Most early S corporations weren’t LLCs electing S status. They were C corporations converting to S status. AAA exists to separate the old C corporation earnings (which generate taxable dividends when distributed) from the S corporation’s pass-through income (which comes out tax-free).
Jeremy hammers home that AAA is a corporate-level measure. Even with a single 100% shareholder, AAA tells you nothing about how distributions affect that specific person’s tax return. It only tells you whether the corporation is distributing S corp earnings or C corp dividends.
Stock Basis: How Much
Only stock basis determines actual tax consequences for individual shareholders. This ledger answers the questions that matter to your clients, such as whether their losses will be deductible or suspended and whether their distributions are tax-free or trigger capital gain.
Stock basis differs from the other two ledgers because it’s shareholder-specific. While retained earnings and AAA belong to the corporation, basis belongs to the person. Since around 2021, it’s been reported on Form 7203, with Part 3 being especially critical for tracking allowable losses, deductions, and carryover amounts.
Jeremy notes that Form 7203 is filed at the shareholder level, not the corporate level. Even if the K-1 package includes a corporate version of the form, the official filing happens with the shareholder’s return, and the preparer needs to verify every number.
Where the Three Ledgers Split Apart
To demonstrate how easily these ledgers diverge, Jeremy walks through a first-year example. Jessica registers Lighthouse LLC as the sole member, funds it with $1,000 from her savings, and elects S corporation status. In year one, the corporation earns $84,000 of ordinary income, receives $500 in municipal bond interest, incurs $4,000 in nondeductible meals and entertainment expenses, and pays Jessica $35,000 in distributions.
Here’s where each ledger lands:
- Retained Earnings: The $84,000 income increases it. The $500 tax-exempt interest increases it. The $4,000 nondeductible expenses and $35,000 distributions decrease it. Total: $45,500.
- AAA: The $84,000 income increases it. The $4,000 expenses and $35,000 distributions decrease it. But the $500 tax-exempt income doesn’t touch AAA. It goes to the Other Adjustments Account (OAA) instead. The $1,000 capital contribution also bypasses AAA. Total: $45,000.
- Stock Basis: Everything affects basis, including the $1,000 contribution, the $84,000 income, the $500 tax-exempt income, minus the $4,000 expenses and $35,000 distributions. Total: $46,500.
Three different numbers from perfectly ordinary transactions. As Jeremy emphasizes, “there is nothing locking these three ledgers together.”
The specific items that cause divergence aren’t unusual:
- Capital contributions increase only stock basis. Jeremy sees preparers incorrectly running these through AAA or retained earnings, but they should go directly to the balance sheet as capital stock or additional paid-in capital.
- Tax-exempt income increases retained earnings and basis but not AAA. If you worked with businesses during the COVID-19 pandemic, you’ve seen this with PPP loan forgiveness and the pre-EIDL grants. Both created tax-exempt income that went to OAA, not AAA.
- Distributions affect all three ledgers differently. They reduce retained earnings without limit, reduce AAA but not below zero, and reduce basis with tax consequences if exceeded.
The Costly Errors That Follow
Understanding the theory is one thing. Recognizing the practical mistakes is where Jeremy’s guidance becomes invaluable for practitioners.
The “Loans to Shareholder” Trap
Jeremy sees this error often. When distributions exceed a shareholder’s basis, IRC Section 1368 requires treating the excess as capital gain. Instead, preparers record the excess on the balance sheet as “loans to shareholder” without any promissory note, repayment schedule, or reported interest income.
This is a misclassification. As Jeremy notes, both the IRS and courts consistently reject these arrangements when no bona fide debtor-creditor relationship exists. If you’re reviewing a return with loans to shareholders that never decrease or only increase, start asking for documentation. Without it, you’re likely looking at misclassified distributions that should have triggered capital gain.
Missing Capital Contributions
There’s a trap for 1040 preparers who don’t also prepare the 1120-S. Nothing on the K-1 explicitly reports capital contributions. Unless the corporate preparer adds a note, that contribution is invisible. Jeremy recommends asking every S corporation shareholder client every year, “Did you make any contributions to this S corporation?” Skip the question, and you’ll understate the basis.
Suspended Losses at Termination
This one catches clients by surprise. IRC Section 1366(d)(3)(A) permanently disallows suspended losses due to insufficient basis when the S election terminates. They don’t release like passive activity losses. During the post-termination transition period, shareholders can contribute capital to create basis and claim those losses. After that window closes, they’re gone forever.
The Order-of-Operations Election
Jeremy highlights an often-overlooked election under Regulation 1.1367-1(g). Normally, nondeductible expenses reduce basis before deductible losses. If those expenses use up remaining basis, the deductible losses suspend while the nondeductible amounts simply disappear.
Shareholders can elect to flip this order, preserving deductible loss carryovers at the expense of nondeductible items. The election is permanent, so revoking it requires IRS permission. Jeremy specifically mentions this could benefit cannabis businesses operating under IRC Section 280E, which face substantial nondeductible expenses.
Practical Takeaways for Your Practice
Jeremy emphasizes that S corporation shareholders need to know their basis and should perform mid-year tax projections. Basis is calculated at year-end or upon stock disposal, but projecting it mid-year helps avoid surprises like taxable distributions or suspended losses.
The three ledgers framework provides clarity in a complex area. Retained earnings shows what happened over the corporation’s life. AAA shows what kind of transactions occurred. Stock basis shows how much in limitations apply to each shareholder. Keep these distinctions clear, and you’ll avoid the errors that trip up even experienced practitioners.
Listen to the full episode for Jeremy’ complete discussion, including additional nuances about basis calculations and real-world applications that go beyond what’s covered here. The next episode of Tax in Action builds directly on these basis concepts, explaining what happens when shareholders actually sell their S corporation stock.
