S-Corp or Partnership? The Debt Rule Most Owners Miss
Updated: 2 days ago
When a business has two or more owners, the question changes. An LLC with multiple members is taxed as a partnership by default. Electing S-corp status is a choice, and it is easier to make than to undo. Here is how the two compare and what to know before you decide.
Partnership vs. S-corp at a glance
Both are pass-through entities: the business itself generally pays no federal income tax, and owners report their share on their own returns. The differences are in the details.
1. Who can own it
A partnership can have almost any owner: individuals, other companies, trusts, and foreign persons. An S-corp cannot. Shareholders must be US individuals (or certain trusts and estates), no more than 100, with no nonresident aliens and no entity owners, and only one class of stock.
This matters for cross-border founders. If a foreign investor, a foreign parent, or a future holding company is on the horizon, the S-corp is usually off the table. An owner who becomes a nonresident alien later can terminate the election. If a partnership has foreign partners, it must withhold under §1446 on their share of effectively connected income.
2. Payroll tax
This is the usual reason people elect S status. In a partnership, active partners generally owe self-employment tax on their whole share of profit. In an S-corp, owners who work in the business must take a reasonable salary subject to payroll tax, and the remaining profit passes through without it. Savings are real but smaller than they look once admin cost and the reduced QBI deduction are counted. (See my companion post on S-corp vs. sole proprietor for a worked example.)
3. Debt and basis
This is the difference most owners miss. In a partnership, partnership-level debt increases each partner's basis under §752. In an S-corp, it generally does not. Only money you put in and loans you make directly to the company count. A personal guarantee of a bank loan does not create S-corp basis.
Example*. Two partners each contribute $50,000. The LLC borrows $200,000, personally guaranteed by both. In year one, helped by 100% bonus depreciation, it has a $150,000 loss, or $75,000 per owner.
As a partnership: each owner's basis is $50,000 + $100,000 share of the loan = $150,000. The full $75,000 loss is allowed.
As an S-corp: each owner's basis is $50,000. Only $50,000 of the loss is allowed; $25,000 is suspended until basis is restored.
At-risk and passive activity rules can still limit losses in either structure, so this shows the basis effect only.
4. Moving property in and out
Partnerships are flexible. Contributing appreciated property under §721, and distributing it later under §731, is generally tax-free. In an S-corp, contributions are tax-free only if the §351 control requirements are met, and distributing appreciated property triggers gain at the corporate level under §311(b). If you plan to hold real estate or other appreciated assets, this alone can decide the question.
5. Splitting profit
A partnership can allocate profits, losses, and specific items unequally if the allocations have substantial economic effect. An S-corp must split everything strictly by share ownership, since it can only have one class of stock. If your deal involves preferred returns, a promote, or special allocations, the partnership is built for it.
California costs
An LLC pays the $800 annual tax plus an LLC fee that starts at $900 once total California income reaches $250,000. An LLC taxed as an S-corp pays the S-corp tax instead, the greater of 1.5% of net income or $800, and no separate LLC annual tax or fee. Partnerships and S-corps can both use the elective pass-through entity tax (through 2030) to get around the federal SALT cap.
The one-way door
Getting in is easy. An LLC taxed as a partnership can generally elect S status without tax. The election is a deemed conversion and is generally tax-free, though you should watch §357(c) if liabilities exceed asset basis.
Getting out is not. Going back from S-corp to partnership is generally treated as a liquidation of the corporation, which can trigger tax on appreciated assets. That is why the decision deserves more thought up front than the Form 2553 might suggest.
Which one fits?
Partnership tends to fit if you have or expect foreign or entity owners, hold appreciated or leveraged assets, need special allocations, or expect early losses funded by debt.
S-corp tends to fit if all owners are US individuals, every owner works in the business, profits are well above a reasonable salary, and you do not plan to distribute appreciated property.
*Illustration: two 50/50 owners, $50,000 contributed each, a $200,000 loan guaranteed by both, $150,000 first-year loss. At-risk and passive-loss rules not applied. Facts change the answer: talk to your advisor before filing Form 2553. Not tax advice.
