Partnerships and multi-member LLCs are the most flexible business structures for multi-owner businesses — but they come with some of the most complex tax rules in the Internal Revenue Code. The pass-through treatment is straightforward; the partner basis rules, special allocations, guaranteed payments, and self-employment tax treatment are not.
This guide covers partnership taxation fundamentals for Utah business owners — what you file, when you file it, how income flows to partners, and the planning strategies that matter most.
Questions about your partnership or multi-member LLC taxes? Call (801) 927-1337 or email admin@cpaone.net.
Partnership Tax Basics: Pass-Through Without Double Tax
Partnerships are pure pass-through entities — the partnership itself pays no federal income tax. Instead:
- The partnership files Form 1065 (U.S. Return of Partnership Income) — an information return
- Each partner receives a Schedule K-1 showing their distributive share of partnership items
- Partners report K-1 income on their personal Form 1040 and pay tax at individual rates
- Losses, credits, and deductions also pass through (subject to basis and at-risk limitations)
This eliminates double taxation — a significant advantage over C-Corp structures. The tradeoff is complexity: partnership tax law is among the most technical areas of the tax code.
Who Files a Partnership Return
Form 1065 is required for:
- General partnerships (two or more partners)
- Limited partnerships (LPs)
- Limited liability partnerships (LLPs)
- Multi-member LLCs (taxed as partnerships by default)
Single-member LLCs do not file Form 1065 — they are disregarded entities.
Utah Form TC-65 — Utah partnership return; filed for the same period as the federal 1065.
Filing Deadlines
- Federal Form 1065: March 15 (or the 15th day of the 3rd month after year-end for fiscal year partnerships)
- Extension: Available to September 15 via Form 7004 — extends the partnership return only, not individual partners’ returns
- K-1 delivery: K-1s must be issued to partners no later than the 1065 filing date (or extended due date)
- Utah TC-65: Same timeline as federal
Critical point: The partnership return due date (March 15) is before the individual return due date (April 15). If K-1s are late, partners cannot file their individual returns on time without extension.
Schedule K-1: How Income Flows to Partners
The K-1 is the primary document connecting partnership income to individual partners. K-1 items include:
| Box | Item | Notes |
|---|---|---|
| Box 1 | Ordinary business income (loss) | The partner’s share of business profit/loss; subject to SE tax for general partners |
| Box 2 | Net rental real estate income (loss) | Treated as passive income |
| Box 5 | Interest income | Retains its character from the partnership level |
| Box 9a | Net long-term capital gain (loss) | Retains capital gain character |
| Box 13 | Other deductions | Including Section 179 expense passed through to partners |
| Box 15 | Credits | Including low-income housing tax credits, R&D credits |
| Box 19 | Distributions | Amounts distributed to the partner during the year |
Partners report K-1 items on their individual returns in the manner specified for each item type.
Self-Employment Tax for Partners
General partners pay self-employment tax on their distributive share of ordinary business income (Box 1) plus guaranteed payments (Box 4). This is a significant cost — identical SE tax treatment to a sole proprietor.
Limited partners are generally exempt from SE tax on their distributive share (but not on guaranteed payments). For LLCs taxed as partnerships, the SE tax treatment of “limited” members is a complex and somewhat unsettled area of tax law.
The S-Corp election as an SE tax reduction strategy for profitable partnerships works the same way as for single-member LLCs — partners become employees, pay FICA only on salary, and receive distributions that are not subject to SE tax. See our S-Corp tax guide and LLC vs. S-Corp analysis.
Guaranteed Payments
A guaranteed payment is a payment to a partner for services or the use of capital, determined without regard to the partnership’s income. Think of it as a salary equivalent for partners.
Tax treatment:
- Guaranteed payments are deductible by the partnership (reduce partnership ordinary income)
- Guaranteed payments are ordinary income to the receiving partner — reported on K-1 Box 4
- Guaranteed payments are subject to self-employment tax for the receiving partner
- Guaranteed payments are not a “salary” in the employment sense — no payroll tax withholding; paid as a draw against the partnership
Partner Basis: Why It Matters
A partner’s outside basis tracks their investment in the partnership and determines:
- The amount of partnership losses they can deduct (losses are limited to basis)
- Whether distributions are taxable (distributions above basis trigger gain)
- The tax treatment of a partnership interest sale
Outside basis increases:
- Capital contributions
- Distributive share of income
- Increases in partner’s share of partnership liabilities
Outside basis decreases:
- Distributions received
- Distributive share of losses
- Decreases in partner’s share of partnership liabilities
Basis tracking is required annually and is often missed by business owners without a CPA. Errors accumulate over time and create complex corrections.
Special Allocations
Unlike S-Corps (which must allocate income pro-rata by ownership percentage), partnerships can allocate income, gain, loss, deduction, and credit items in any way the partners agree — as long as the allocation has “substantial economic effect” under IRC § 704(b).
This flexibility allows sophisticated tax planning:
- Allocating depreciation deductions to partners in higher tax brackets
- Allocating gain from appreciated property to the contributing partner
- Creating waterfall distributions tied to return-of-capital and profit thresholds
Special allocations require careful operating agreement drafting and annual review to ensure substantial economic effect requirements are met.
Utah Partnership Tax Requirements
Utah TC-65 — due March 15; reports the partnership’s Utah-source income and each partner’s distributive share. Utah-source income from Utah-based partnerships is taxable to partners regardless of their state of residency.
Composite Returns — Utah allows partnerships to file composite returns on behalf of nonresident individual partners, paying Utah tax at the individual rate (4.65%) on their Utah-source income. This simplifies filing for partnerships with out-of-state partners.
Pass-Through Entity Tax (PTET) — Utah has enacted an optional pass-through entity tax election that allows partnerships (and S-Corps) to pay Utah income tax at the entity level and pass through a corresponding credit to partners. This election provides a workaround for the federal $10,000 SALT deduction cap for partners who itemize. We evaluate this election annually for eligible clients.
Navigate Partnership Taxes With Confidence
Partnership tax law is complex — but it doesn’t have to be stressful. FJ & Associates handles Form 1065 preparation, K-1 distribution, basis tracking, and ongoing partner tax planning for Utah partnerships of all sizes.
Call (801) 927-1337 | Email admin@cpaone.net | 612 N Kays Dr Suite 120, Kaysville, UT 84037
Missy Dennis, CPA | Partner | FJ & Associates, PLLC | Kaysville, Utah
Missy holds a Master of Accounting degree from the University of Utah and is a licensed Certified Public Accountant. She is committed to providing clear, accurate, and actionable guidance so clients can navigate complex financial decisions with confidence. With more than twenty years of public accounting experience, Missy Dennis specializes in: Tax preparation and tax advisory; Bookkeeping strategy alignment; Estate and trust taxation; Audit and consulting services; Low-income housing tax credits; Non-profit accounting; Small- and mid-sized business advisory.
