Authored by: Derek J. Taylor
A Granite Harbor Capital Perspective
Most private capital vehicles specialize. A real estate fund buys and operates property. A private equity fund acquires and grows operating companies. Limited partners typically hold both exposures separately, in separate vehicles, with separate K-1s and separate tax profiles.
The Mariner Fund takes a different approach. By housing investment real estate and private equity operating company investments inside the same commingled partnership, the structure allows the tax attributes of one asset class to interact directly with the economics of the other — inside a single entity, on a single Schedule K-1. For limited partners, that structural choice is not incidental. It is the core of the fund's after-tax value proposition.
This article outlines how that blended structure works, why it can be particularly valuable for LPs who are real estate professionals under the tax code, and how the eventual shift from ordinary income offsets to capital gains treatment rounds out the strategy's lifecycle benefits.
The Mechanics: Cost Segregation and Bonus Depreciation as a Portfolio-Level Tool
Real estate generates unusually large non-cash losses in its early holding years, primarily through two tools:
Cost segregation studies reclassify components of a real property acquisition — carpeting, certain electrical and plumbing systems, parking lot improvements, land improvements, and other qualifying components — from 27.5- or 39-year depreciation schedules into 5-, 7-, or 15-year property classes. A well-executed study can reclassify 20–40% of a property's depreciable basis into these shorter-life categories.
Bonus depreciation then allows that reclassified basis to be expensed on an accelerated schedule in the year the asset is placed in service, rather than depreciated ratably over its useful life. The applicable bonus percentage has changed over recent tax years and should always be confirmed against current law at the time of acquisition, since it is one of the more frequently revised provisions in the federal tax code.
The combined effect is that a real estate acquisition inside the Mariner Fund can generate a tax loss in its first one to two years that is disproportionately large relative to the actual cash invested — often exceeding the property's cash-basis economic loss by a wide margin, since the loss is a function of depreciation timing rather than operating performance.
Standing alone, in a real-estate-only vehicle, that loss is a valuable but somewhat isolated benefit — useful primarily against other passive real estate income or, for qualifying investors, against a narrower set of income types. Combined with an operating-company allocation inside the same partnership, the loss has a second job to do.
Why the Commingled Structure Matters
Private equity operating company investments generate their own tax profile: ordinary taxable income from operations flowing through as the LP's allocable share, potential Section 1231 or capital gain treatment on exit, and in some structures, UBTI exposure for tax-exempt LPs if leverage is used at the portfolio company level.
Because the Mariner Fund holds both asset classes in one partnership, the fund can allocate real estate depreciation losses and operating company taxable income to the same partners in the same tax year, on the same K-1, rather than requiring the LP to separately aggregate losses and income generated by two unrelated vehicles filed on two unrelated schedules.
This matters for a few practical reasons:
- Timing alignment. The fund can sequence real estate acquisitions (and their associated cost segregation studies) to coincide with periods when operating company allocations are expected to generate meaningful taxable income, rather than leaving LPs to coordinate that timing themselves across unrelated managers.
- Single K-1 simplicity. LPs and their tax preparers work from one partnership return rather than reconciling positions across multiple funds, multiple general partners, and multiple reporting calendars.
- Basis and capital account efficiency. Losses and income run through a single capital account, which can simplify basis tracking and at-risk calculations relative to holding the two exposures in separate vehicles.
The Passive Activity Loss Rules: Where the Real Benefit Actually Lives
This is the part of the strategy that requires the most care, and it is where Granite Harbor Capital encourages LPs to engage their own tax advisors directly, because the benefit is real but conditional.
Under Section 469 of the Internal Revenue Code, rental real estate losses are generally classified as passive losses, deductible only against passive income — not against wages, portfolio income, or, typically, active trade-or-business income from an operating company. For most limited partners, this means the depreciation losses generated by the fund's real estate holdings can offset the fund's own operating company income if that operating company income is itself treated as passive to the LP — which is the common case for a purely passive LP interest in a fund-level operating business. In that scenario, the blended structure works cleanly: passive real estate losses offset passive operating company income within the same partnership, without the LP needing any special tax status.
Where the strategy becomes materially more powerful is for LPs who qualify as real estate professionals under Section 469(c)(7).
The Added Benefit for Real Estate Tax Professionals
An LP who meets the real estate professional test — generally, more than 750 hours per year in real property trades or businesses in which the taxpayer materially participates, and more than half of the taxpayer's personal service hours across all activities — can treat qualifying rental real estate losses as non-passive. For a qualifying LP, this can open the door to using those losses against a broader range of income, including active trade or business income, subject to material participation and grouping-election requirements under Treasury Regulations Section 1.469-9.
This is a meaningfully higher-value outcome than the passive-to-passive offset available to a typical LP, and it is one reason the Mariner Fund's structure has particular appeal to:
- Real estate professionals and developers who already qualify under the 750-hour test through other activities
- LPs who materially participate in the Mariner Fund's real estate operations directly (as opposed to holding a purely passive allocation)
- Family offices and high-net-worth individuals for whom one spouse's real estate professional status can be leveraged on a joint return
Whether a given LP qualifies is a facts-and-circumstances determination that depends on hours logged, other activities, grouping elections, and material participation tests — not on fund structure alone. Granite Harbor Capital does not make real estate professional determinations for LPs and strongly encourages each investor to work through qualification with their own CPA before relying on non-passive treatment.
From Ordinary Income Offsets to Capital Gains: The Second Half of the Lifecycle
The depreciation strategy addresses the holding period of the investment — offsetting ordinary taxable income year over year. The exit of each asset introduces the second half of the tax story: the differential between ordinary income rates and long-term capital gains rates.
A few dynamics are worth highlighting for LPs:
Depreciation recapture. Gain attributable to previously claimed depreciation on real property is generally subject to Section 1250 unrecaptured gain treatment, taxed at a maximum rate of 25% — higher than the top long-term capital gains rate on the remaining gain, but still meaningfully below ordinary income rates for most taxpayers. Personal property reclassified through cost segregation (the 5-, 7-, and 15-year components) is generally subject to Section 1245 recapture at ordinary rates to the extent of gain. LPs should not assume all gain on a cost-segregated property exits at capital gains rates; a portion is typically recaptured at higher rates, and Granite Harbor Capital's reporting will break this out by component at disposition.
Operating company exits. Sale of an operating company position, where structured as a sale of partnership interests or qualifying stock, can generate long-term capital gain for LPs who have held their fund interest, and the underlying asset has been held, for more than one year — again subject to any carried interest holding period requirements applicable to the general partner's allocation under Section 1061, which does not directly affect LP-level capital gains treatment but is worth understanding as part of the fund's overall alignment.
Net effect across the fund. Because early-year depreciation losses reduce ordinary taxable income during the holding period, and later-year exits are taxed at a blend of capital gains and recapture rates typically below ordinary rates, the combined structure is generally designed to shift the LP's income recognition away from higher current ordinary rates and toward the lower rates applicable at exit — a form of tax deferral and rate arbitrage rather than tax elimination. Depreciation losses reduce basis, and deferred tax is still tax; the benefit is timing and rate, not permanent avoidance.
Additional Considerations for LPs
A balanced discussion of this strategy should include its limitations and risks alongside its benefits:
- At-risk rules (Section 465) and passive activity loss rules (Section 469) both cap the losses an LP can currently use, regardless of the losses allocated on the K-1. Suspended losses carry forward but are not always usable in the year generated.
- Tax-exempt LPs should evaluate UBTI exposure carefully, particularly to the extent the fund uses acquisition-level leverage.
- State conformity to federal bonus depreciation varies widely; several states decouple from bonus depreciation entirely or impose add-back requirements, which can materially change the state-level benefit even where the federal benefit is intact.
- Legislative risk. Bonus depreciation percentages and passive activity rules are subject to change by Congress, and the value of this strategy for any given vintage is a function of the law in effect when assets are placed in service.
Conclusion
The Mariner Fund's decision to hold investment real estate and private equity operating companies inside a single commingled partnership is a structural choice with real tax consequences for limited partners. It allows the accelerated losses generated by cost segregation and bonus depreciation to offset operating company income within the same entity and the same tax year, it offers an enhanced opportunity for LPs who qualify as real estate professionals to use those losses against a broader income base, and it pairs that ordinary-income offset with an exit profile weighted toward capital gains and moderate recapture rates rather than ordinary rates.
As with any tax-driven fund strategy, the value to any individual LP depends on that investor's specific tax position, other activities, and elections. This article is intended as general, educational information about the Mariner Fund's structure and the tax mechanisms it employs — it is not tax, legal, or investment advice, and prospective and current LPs should review fund documents and consult their own tax and legal advisors before making decisions based on the concepts discussed here.
Disclosure: The Mariner Fund has not deployed capital as of the date of publication, and holdings and strategies discussed above are prospective and subject to change. This article should not be construed as an offer to sell, or a solicitation of an offer to buy, any interest in the Mariner Fund. Any such offering would be made only through the separate delivery of the Fund’s private placement memorandum, subscription documents, and related offering materials, and only to investors who meet applicable eligibility requirements.
Granite Harbor Capital