Partnership and S Corp Taxation Training: What Entity Advisers Need to Master

9/30/2026

Most practitioners learn pass-through taxation one return at a time. A firm takes on a few partnerships, a handful of S corporations, and the preparer works out basis, allocations and distributions as each file demands it. That works until a client asks a forward-looking question: should we elect S status, should we admit this investor, what happens if one owner leaves, what does the buyer's offer actually mean after tax. Those questions require a working command of two different systems, Subchapter K and Subchapter S, and of where they diverge.

This page is a skills map for practitioners who prepare pass-through returns and advise owners on entity choice. It lays out what you need to be able to do in each area, the mistakes that show which areas are weak, and how our partnership and S corporation courses line up with those needs, so you can choose training based on the work you actually do.

Who This Is For

Tax preparers and staff accountants moving from individual returns into Forms 1065 and 1120-S.
Senior preparers and reviewers who sign off on K-1s and need to catch basis and allocation errors before they reach clients.
Enrolled agents and CPAs who advise small-business owners on forming, electing, restructuring and selling.
Bookkeepers and controllers of closely held businesses who maintain the records that drive basis and distributions.

If your practice already handles pass-through returns but you hesitate when an owner asks "what happens if we change structure?", the gaps are almost always in the areas below.

Skill 1: Entity Classification and Elections

What you need to be able to do:

Explain that an LLC is a state-law entity and that its tax classification is a separate question: disregarded, partnership, C corporation or S corporation.
Apply the S corporation eligibility tests (shareholder count and type, nonresident aliens, one class of stock) to a real ownership structure and operating agreement.
Time a Form 2553 election correctly using the 2-months-and-15-days rule, collect every required consent, and know when Form 8832 is or is not needed.
Use Rev. Proc. 2013-30 to fix a late election, and recognize when a private letter ruling is the only route.
Know what an election change does to the client: a partnership converting to corporate classification is generally a tax-free incorporation, while a corporation becoming a partnership is a taxable liquidation.

Where it goes wrong: an operating agreement drafted for partnership economics left unchanged after an S election, a missed shareholder consent, or a "pending" election nobody followed up on.

Skill 2: Basis, Inside and Out

Basis is the area that separates competent pass-through work from guesswork, and the two systems handle it differently.

Partnerships:

Track each partner's outside basis: contributions, share of income and loss, distributions, and share of partnership liabilities under Section 752, including the difference between recourse and nonrecourse debt.
Maintain capital accounts under the Section 704(b) rules where the agreement requires it, and report partners' capital on the K-1 on the tax basis method.
Understand inside basis, Section 704(c) for contributed property, and the Section 754 election that allows a basis adjustment when an interest is purchased or a partner dies.

S corporations:

Track stock basis and debt basis for each shareholder, knowing that debt basis arises only from bona fide loans the shareholder personally makes to the corporation, not from guarantees of corporate debt.
Apply the ordering rules for income, distributions and losses, and the restoration of debt basis.
Prepare Form 7203 for shareholders who must attach it, such as those claiming a loss, receiving a non-dividend distribution, disposing of stock or receiving a loan repayment.

Where it goes wrong: losses deducted without basis, distributions treated as tax-free when they exceed basis, and a client who moved from partnership to S status without realizing the entity's bank debt no longer supports their losses.

Skill 3: Allocations

Partnerships:

Read an operating agreement's allocation provisions and test whether special allocations have substantial economic effect or follow the partners' interests in the partnership.
Handle preferred returns, waterfalls and profits interests, and know how they appear on capital accounts and K-1s.
Apply Section 704(c) so that built-in gain or loss on contributed property is allocated to the contributing partner.

S corporations:

Allocate items pro rata by shares, per day, including in years when shares change hands.
Know when the election to close the books on the termination of a shareholder's interest is available and useful.
Recognize arrangements that risk creating a second class of stock.

Where it goes wrong: a partnership agreement whose allocations do not match its distribution waterfall, or an S corporation that "allocates" by owner effort instead of by shares.

Skill 4: Distributions

Partnerships:

Apply Section 731 nonrecognition, the basis rules for distributed property, and the exceptions: marketable securities treated as cash, Section 751 hot assets, the seven-year rules for previously contributed property, and the disguised sale rules.
Distinguish guaranteed payments from distributive shares, for both income tax and self-employment tax.

S corporations:

Apply the distribution ordering rules, including the accumulated adjustments account and accumulated earnings and profits from C corporation years.
Recognize that distributing appreciated property triggers corporate-level gain under Section 311(b).
Keep distributions pro rata across shareholders.

Where it goes wrong: a partner who receives a distribution in excess of basis without anyone noticing the gain, or an S corporation distributing real estate to one owner as part of a buyout without modeling the gain it passes through to both.

Skill 5: Owner Compensation and Benefits

S corporations: set and document reasonable compensation for shareholder-employees before payroll starts, and handle more-than-2% shareholder fringe benefits such as health insurance correctly on the W-2. Our post on payroll for an S corp election covers the setup.
Partnerships: structure guaranteed payments, and understand when a member's distributive share is subject to self-employment tax. The limited partner exception remains unsettled for LLC members, with the Tax Court's functional test in Soroban and the Fifth Circuit's August 2026 substitute opinion in Sirius Solutions taking different approaches.
Both: run expense reimbursements for owners through an accountable plan rather than treating them as distributions.

Skill 6: Loss Limitations in Order

A loss that flows through to an owner has to clear several limitations in sequence: basis first, then the at-risk rules, then the passive activity rules, and then, for noncorporate taxpayers, the excess business loss limitation. Practitioners need to apply them in the right order, carry suspended amounts forward under the correct limitation, and explain to the owner why a loss on the K-1 did not reduce their tax.

Skill 7: Returns, K-1s and Deadlines

Prepare Forms 1065 and 1120-S and the Schedules K-1 that go with them, including Schedules K-2 and K-3 where international items or foreign partners require them.
Know the filing calendar: calendar-year partnerships and S corporations file by the 15th day of the third month after year-end, with an extension available. Our post on the partnership tax return deadline covers the details and the late-filing penalties that apply per partner or shareholder per month.
Understand the centralized partnership audit regime, the partnership representative, and when a partnership can elect out.
Handle state composite returns, nonresident withholding and pass-through entity tax elections where the client's states offer them.

Skill 8: Exits and Restructurings

This is where advisory work earns its fees and where weak technical foundations cost clients the most.

Partnerships: sales of partnership interests (including the ordinary income portion under Section 751), redemptions of a departing partner, Section 754 adjustments for the buyer, and technical issues when real estate partners want to go separate ways, as our post on 1031 exchange rules
S corporations: stock versus asset sales, elections under Sections 338(h)(10) and 336(e), the built-in gains tax for former C corporations, and the effect of reasonable compensation history on a buyer's view of earnings.
Both: modeling the after-tax result of a proposed deal for each owner, not just for the entity.

A Self-Assessment

Before choosing a course, answer these honestly for your current practice:

Could you explain to a client, with numbers, why moving their debt-financed LLC from partnership to S taxation might suspend their losses?
Could you test whether a preferred return in an operating agreement creates a second class of stock if the LLC elects S status?
Do you track partner outside basis, including liability shares, every year, or reconstruct it only when a partner leaves?
Can you prepare Form 7203 from the corporation's records without asking the shareholder for numbers you should already have?
Could you work out the tax on an S corporation distributing a building to one shareholder?
Could you advise on a Rev. Proc. 2013-30 late election from start to finish?

If most of your "no" answers are in questions 1 to 3, your gaps are on the partnership side. If they are in questions 4 to 6, start with S corporations.

Which Course Fits Whom

The four courses below sit behind our entity comparison material. Descriptions here are based on each course's title and focus; check the course page for the current outline, format and price before enrolling.

Course	Best fit
Certificate in Partnership Taxation	Practitioners who prepare Form 1065 or advise multi-owner LLCs
Certificate in S Corp Transactions	Practitioners who handle S corporation elections, transactions and owner issues
S Corporations	Preparers building a foundation in S corporation taxation
Sole Proprietorship	Preparers working with Schedule C clients, often the starting point for an S election conversation

Certificate in Partnership Taxation. For practitioners whose work includes partnership returns and multi-owner LLCs, and for advisers whose clients' deals depend on special allocations, debt-financed losses or distributions of property. Skills 2 through 4 and 8 above, on the partnership side, are where this program fits.

Certificate in S Corp Transactions. For practitioners who advise S corporations and their shareholders through elections, compensation decisions, distributions and transactions. Skills 1, 2, 5 and 8 on the S corporation side are where this program fits.

S Corporations. For preparers who need a grounding in S corporation taxation before taking on more complex transaction work.

Sole Proprietorship. For preparers whose clients are mostly Schedule C filers. Many S election conversations start with a sole proprietor, and understanding the starting point makes the comparison clearer.

Advising on entity choice? Take both certificates. Entity choice is a comparison between the two systems, and most of the costly mistakes happen at the boundary between them: partnership-style agreements under an S election, debt basis lost in a conversion, appreciated property in the wrong structure. For broader tax preparation programs, see our tax preparer certification courses.

How to Get the Most From the Training

Bring your own files. Work the concepts against two or three real client returns: rebuild one partner's outside basis, one shareholder's Form 7203, one distribution analysis.
Read the operating agreements. Most allocation and second-class-of-stock problems are visible in documents nobody in the firm has read since formation.
Build checklists. Turn what you learn into an engagement checklist for elections, basis tracking and distributions, so the knowledge outlasts the person who took the course.
Revisit after law changes. The 2025 legislation changed several provisions that affect pass-through owners, including the permanent Section 199A deduction and its new minimum deduction. Keep an eye on developments in the self-employment tax treatment of LLC members as the courts continue to address it.

Start With the Partnership Certificate

If you prepare partnership returns or advise multi-owner LLCs, start with the Certificate in Partnership Taxation. If your client base is mostly S corporations, start with the Certificate in S Corp Transactions. If you advise on entity choice, plan for both.

Frequently Asked Questions

What should a partnership taxation course cover?

At minimum: entity classification, partner outside basis including Section 752 liability allocations, capital accounts and Section 704(b) allocations, Section 704(c) for contributed property, guaranteed payments, distributions under Section 731 and its exceptions, Section 751 hot assets, sales and redemptions of partnership interests, Section 754 basis adjustments, and Form 1065 and K-1 reporting. A course that skips liabilities and capital accounts leaves out the parts that cause the most errors in practice.

What is the hardest part of partnership taxation?

For most practitioners, basis and capital accounts. Outside basis depends on each partner's share of partnership liabilities, which changes whenever debt changes, and capital accounts must track the economic deal for allocations to hold up. Errors there carry through to loss limitations, distributions and the gain on an eventual sale. Section 704(c) and the distribution exceptions are close behind, because they matter only occasionally and are easy to miss.

What should S corporation tax training include?

Eligibility and elections (including late-election relief), stock and debt basis and Form 7203, pro rata allocations, the distribution ordering rules and the accumulated adjustments account, reasonable compensation, more-than-2% shareholder fringe benefits, the built-in gains tax for former C corporations, and transactions such as stock versus asset sales and Section 338(h)(10) or 336(e) elections. Advisers also need to know how to keep an election from terminating.

Do I need both partnership and S corp training to advise on entity choice?

Yes, if you want to give advice rather than default to one answer. Entity choice for a multi-owner business is a comparison between Subchapter K and Subchapter S, and the decisive differences (debt basis, special allocations, distributions of appreciated property and employment taxes) only become visible when you understand both systems. Many costly mistakes happen at the boundary between them.

Who should take the Certificate in Partnership Taxation?

Practitioners who prepare Form 1065 or advise LLCs with more than one owner, especially those whose clients have debt-financed real estate, investor and operator partners with different economics, or owners planning to separate or sell. If you regularly answer questions about partner basis, allocations or distributions, the certificate fits your work. Check the course page for the current outline and format.

Is S corporation taxation easier than partnership taxation?

In the mechanics, usually yes: allocations are strictly pro rata, there is no liability allocation, and the rules are less flexible. But S corporations have their own traps: debt basis that depends on how loans are structured, reasonable compensation, second-class-of-stock risk, corporate-level gain on property distributions and the built-in gains tax. Simpler rules do not mean fewer mistakes, especially for practitioners advising on transactions.