When you contribute services to a partnership in exchange for an ownership interest, the tax treatment of services contributed to a partnership turns on a single question: did you receive a capital interest or a profits interest? A capital interest is taxed as ordinary compensation income the moment it vests, under Internal Revenue Code Section 83. A profits interest generally passes to you tax-free at grant under an IRS safe harbor. That one distinction controls your starting tax basis, your self-employment tax exposure, how carried interest rules apply, and what happens when you eventually leave.
The Liquidation Test That Sorts the Two Interests
The IRS separates the two using what practitioners call the liquidation test. Imagine the partnership sold everything at fair market value the instant after your interest was granted and distributed the proceeds. If you would receive a share of the existing assets, you hold a capital interest. If you would receive nothing because your right is limited to future earnings and appreciation, you hold a profits interest.
A concrete example. Partner A puts in $100,000 cash, and you contribute services for a 20% interest. If the partnership liquidated immediately and you walked away with $20,000 of that cash, you received a capital interest. If Partner A got the full $100,000 back and you got nothing, you received a profits interest.
Because the test runs on liquidation entitlement, the partnership agreement must maintain capital accounts consistent with Treasury Regulation Section 1.704-1(b)(2). Those capital accounts are what determine who gets what in a hypothetical liquidation, and therefore whether your interest is capital or profits.1eCFR. 26 CFR 1.704-1 – Partner’s Distributive Share
Capital Interest: Ordinary Income Now
Receiving a capital interest for services is a taxable event. Section 83 treats any property transferred in exchange for services as compensation, and a capital interest with immediate liquidation value counts as property. You include the fair market value of the interest in your gross income as ordinary income for the year the interest becomes either freely transferable or no longer subject to a substantial risk of forfeiture, whichever comes first.2Office of the Law Revision Counsel. 26 U.S. Code 83 – Property Transferred in Connection With Performance of Services
If vesting conditions apply, taxation is deferred until they are satisfied. A three-year service requirement means you owe nothing until that three-year mark, at which point you are taxed on the fair market value of the interest when it vests, not when it was originally granted. If the partnership appreciates significantly during the vesting period, that entire increase gets taxed as ordinary income rather than capital gain.
The partnership gets a corresponding deduction equal to the amount you include in income, taken in the partnership’s tax year that overlaps with or includes the year you recognize the income.
The Section 83(b) Election
If your capital interest is unvested, you can elect under Section 83(b) to recognize the income immediately based on the grant-date fair market value. The election locks in a potentially lower taxable amount and converts all future appreciation into capital gain rather than ordinary income. The tradeoff: you pay tax now on value you might never fully realize.
The deadline is strict. You must file the election with the IRS within 30 days of the grant date. If the thirtieth day falls on a weekend or holiday, the deadline extends to the next business day. A late filing cannot be corrected, and there is no relief provision.3Internal Revenue Service. Instructions for Form 15620, Section 83(b) Election
The real risk: if you file the election, pay tax on the grant-date value, and then forfeit the interest because you fail the vesting conditions, you get no deduction for the forfeiture. The tax you paid is gone. Section 83(b) spells that out directly. The election is a calculated bet on your own tenure.
Profits Interest: Tax-Free Under a Safe Harbor
A profits interest received for services is generally not taxable when granted. The favorable treatment comes from Revenue Procedure 93-27, which the IRS refined in Revenue Procedure 2001-43. Under the safe harbor, the IRS will not treat the receipt as a taxable event for either the partner or the partnership.4Internal Revenue Service. Revenue Procedure 2001-43
Three conditions disqualify a profits interest from the safe harbor:
- The interest relates to a substantially certain and predictable stream of income from partnership assets, such as income from high-quality debt securities or a long-term net lease.
- The service partner sells or otherwise disposes of the interest within two years of receiving it.
- The interest is in a partnership whose interests are traded on an established securities market.
If any of those applies, the safe harbor falls away and the IRS can assert that the fair market value is immediately taxable as ordinary income. Most private service partnerships clear all three without difficulty.
Unvested Profits Interests
Revenue Procedure 2001-43 answered a question 93-27 left open: what happens when a profits interest is subject to vesting. The IRS clarified that the safe harbor applies even to unvested profits interests, so long as the partnership and all partners treat the service provider as the owner of the interest from the grant date. That means issuing a Schedule K-1 and allocating the partner’s distributive share of income, gain, loss, deduction, and credit from day one.4Internal Revenue Service. Revenue Procedure 2001-43
Because of this immediate-ownership treatment, a Section 83(b) election is not required on a qualifying unvested profits interest. Neither the grant nor the later vesting event is treated as taxable, provided the partnership consistently reports the service partner as an owner from the grant date. One catch: neither the partnership nor any of the partners can deduct any amount as wages or compensation for the fair market value of the unvested profits interest at grant or at vesting.
Your Starting Basis and Why It Matters
Your outside basis in the partnership interest represents your tax investment. It determines how much pass-through loss you can deduct and how much gain you recognize when you sell.
If you received a capital interest, your initial outside basis equals the ordinary income you recognized. Recognized $50,000 in income? Your outside basis starts at $50,000. That basis prevents you from being taxed twice on the same value.
If you received a qualifying profits interest, you recognized no income, so your initial outside basis is zero. A zero basis means you cannot deduct any partnership losses passed through to you until your basis increases. Suspended losses carry forward until you have enough basis to absorb them.
How Partnership Debt Builds Basis
This is where service partners often leave money on the table. Under Section 752, any increase in your share of partnership liabilities is treated as if you contributed that amount in cash, raising your outside basis.5Office of the Law Revision Counsel. 26 U.S. Code 752 – Treatment of Certain Liabilities
For a profits-interest partner starting at zero, picking up a share of partnership debt can be the difference between deducting current-year losses and watching them suspend. How much debt you are allocated depends on whether the liability is recourse or nonrecourse. Recourse debt is allocated to the partner who bears the economic risk of loss. Nonrecourse debt generally follows the partners’ profit-sharing ratios, so a service partner with a meaningful profit percentage will typically pick up a proportionate share.
Going forward, both types of service partners increase basis through their share of partnership income allocations and additional contributions, and decrease it through distributions and loss allocations.
Self-Employment Tax on Your Distributive Share
A service partner’s distributive share of ordinary partnership income is generally subject to self-employment tax under the Self-Employment Contributions Act. Partners are not employees; they are self-employed for federal tax purposes, so no employer withholds FICA on their behalf.6Internal Revenue Service. Self-Employment Tax and Partners
The combined rate is 15.3%: 12.4% for Social Security on net self-employment income up to $184,500 in 2026, and 2.9% for Medicare on all net self-employment income with no cap. If your net self-employment income exceeds $200,000 as a single filer or $250,000 filing jointly, an additional 0.9% Medicare surtax applies to the excess.
There is an exception for limited partners. Section 1402(a)(13) excludes a limited partner’s distributive share from self-employment income, except for guaranteed payments received for services actually performed for the partnership.7Office of the Law Revision Counsel. 26 USC 1402 – Definitions
Who qualifies as a limited partner for this exclusion has been contested for years, and the answer matters especially for service partners in LLCs taxed as partnerships. The courts and the IRS have not settled on a single standard, and the result may depend on the circuit you fall in. If your self-employment tax position depends on the exclusion, treat it as unsettled territory and get specific advice before relying on it.
The Three-Year Hold on Carried Interest
Service partners in certain investment partnerships face an added rule under Section 1061. If you received your interest for performing services in an “applicable trade or business,” any long-term capital gain attributable to that interest is recharacterized as short-term capital gain unless the underlying assets were held for more than three years. Short-term gain is taxed at ordinary rates, often a significant jump over the long-term rate.8Office of the Law Revision Counsel. 26 USC 1061 – Partnership Interests Held in Connection With Performance of Services
An applicable trade or business is one that involves raising or returning capital and either investing in or developing “specified assets” such as securities, commodities, real estate held for rental or investment, and derivatives. The rule targets private equity, hedge fund, and real estate fund managers.
Two exceptions. Section 1061 does not apply to a partnership interest held directly or indirectly by a corporation. And a capital interest that gives you a right to share in partnership capital proportionate to your capital contribution, or proportionate to the value already taxed under Section 83, is excluded from the definition of an applicable partnership interest.
If you hold both a carried profits interest and a capital interest from co-investing your own money, the partnership’s books and records must clearly separate allocations attributable to contributed capital from allocations attributable to the carry. Without that split, the whole interest can be swept into the three-year rule.
What Happens When You Exit
How you are taxed on your way out depends on how the partnership makes money and what role you played. Section 736 divides payments to a retiring or deceased general partner into two buckets: payments for the partner’s interest in partnership property, generally treated as a distribution producing capital gain, and payments for everything else, treated as ordinary income through a guaranteed payment or distributive share.9Office of the Law Revision Counsel. 26 U.S. Code 736 – Payments to a Retiring Partner or a Deceased Partner’s Successor in Interest
The provision that hits service partners hardest: if capital is not a material income-producing factor for the partnership (law firms, consulting practices, medical groups), payments for goodwill and unrealized receivables are treated as ordinary income unless the partnership agreement specifically provides for goodwill payments. A service partnership that never addressed goodwill in its agreement can see the entire buyout above the departing partner’s share of tangible assets taxed at ordinary rates. For a partner who spent years building the practice’s reputation, that drafting oversight is expensive.
Partnerships where capital is a material income-producing factor, or where the departing partner was a limited partner, get more favorable treatment: payments for goodwill and other property interests are generally taxed as distributions, often producing capital gain.
What the Partnership Agreement Needs to Say
The partnership agreement is the single most important document for securing the intended tax treatment. A handful of provisions carry most of the weight:
- Capital account maintenance consistent with Treasury Regulation Section 1.704-1(b)(2). For a profits interest, the agreement should document that the service partner’s capital account starts at zero, confirming no liquidation value at grant.
- Explicit adoption of the Revenue Procedure 93-27 and 2001-43 safe harbor, and a statement that the service partner will be treated as the owner from the grant date.
- A clear vesting schedule. For a capital interest, this fixes when Section 83 taxation kicks in. For a profits interest, the partnership must still allocate income from day one despite the vesting restriction.
- Specific goodwill provisions if you want goodwill payments on exit to receive capital gain treatment under Section 736. Silence defaults to ordinary income in service partnerships.
When a capital interest is granted, the partnership needs a third-party valuation to establish fair market value at the grant date. That valuation supports both the ordinary income you report and the deduction the partnership claims. Private partnership interests frequently carry valuation discounts for lack of marketability and minority position, and while those discounts can meaningfully reduce the taxable amount, aggressive discounts invite IRS scrutiny.
The partnership files Form 1065 and issues a Schedule K-1 to each partner reflecting the chosen structure. For a profits interest, the K-1 shows a zero initial capital account. For a capital interest, the K-1 reflects the ordinary income recognized and the corresponding capital account increase. If you filed a Section 83(b) election, attach a copy to your individual return for the year of the grant.3Internal Revenue Service. Instructions for Form 15620, Section 83(b) Election