An investor lives in one state and invests in a fund based in a second, which owns properties in six more. At the end of the year a K-1 arrives with income sourced across all of them.
The question that follows surprises most first-time private fund investors: do I now have to file tax returns in states I have never been to?
Often, yes.
Why this happens
States generally tax nonresidents on income sourced within their borders. Partnership income is sourced to where the partnership does business or holds property, and — because a partnership is a pass-through rather than a taxpayer — that sourcing follows through to the partners.
The result is that a passive limited partner with no connection to a state other than an indirect fractional interest in a building there can acquire a filing obligation in it. The investor took no action to create the nexus. The partnership did, and the character of the income including its source passed through.
The scale of the problem tracks the portfolio. A single-property fund creates at most one additional state. A diversified real estate fund with assets in a dozen states, held alongside three other such funds, can generate a genuinely burdensome set of obligations — with preparation fees for each.
States also commonly impose thresholds below which a nonresident need not file, and those thresholds vary widely. A small allocation may fall under them; a larger one may not. This is fact-specific and is exactly the kind of question a tax adviser familiar with the relevant states should answer rather than an investor guessing.
The two mitigations
Because this burden is well known, most states offer mechanisms to reduce it, and most partnerships operating across states use one or both.
Composite returns
A composite return is filed by the partnership on behalf of participating nonresident partners, reporting their share of state-sourced income and paying the tax. Participating partners generally do not need to file individually in that state.
The convenience is real. The cost is that composites typically apply the highest applicable rate and do not accommodate the partner personal circumstances — deductions, exemptions, credits, other income or losses in that state, or the ability to use state-specific attributes. A partner whose actual liability would be lower on an individual return pays more by joining.
The trade is therefore: pay potentially more tax in exchange for not filing. For a small allocation where preparation fees would exceed the difference, joining usually wins. For a large allocation, or where the partner has offsetting attributes in that state, filing individually may be substantially better.
There is no general rule. It depends on the state, the size of the allocation, and the taxpayer overall position — which is why partnerships offer the election rather than deciding for everyone.
Nonresident withholding
Withholding works differently and is more often mandatory. The partnership remits an amount to the state on behalf of nonresident partners against their anticipated liability.
The critical distinction: withholding does not generally discharge the filing obligation. The partner may still need to file in that state, claiming the withheld amount as a credit against the actual liability, and receiving a refund if the withholding exceeded it.
So withholding protects the state revenue rather than relieving the partner administrative burden. It can also create a cash flow cost, since amounts are withheld from distributions before the partner ever sees them and any excess is recovered only by filing — the very filing the partner was hoping to avoid.
The home state credit
Most states provide a credit for tax paid to other states on the same income, to mitigate double taxation.
The mechanics vary and the credit is not always complete. Where the other state rate exceeds the home state rate, the credit is typically capped at what the home state would have charged, leaving the excess as a genuine additional cost. Some state combinations interact awkwardly, and reciprocal arrangements exist in some cases and not others.
This is squarely a matter for a tax adviser who knows the specific state combination, and it is a reason investors with substantial multi-state exposure should have one.
What investors should actually do
Before investing: ask where the fund operates and expects to operate, whether it files composite returns and in which states, whether it withholds, and whether it will provide the state detail needed to file. A sponsor that cannot answer has not thought about the investor experience.
When the K-1 arrives: review the state schedules, not just the federal page. The state detail is where the obligations are identified, and it is frequently supplied as a supplemental schedule rather than on the K-1 itself.
Every year: re-evaluate composite elections. The right answer can change as allocations change and as the fund enters or exits states.
Across the portfolio: count the total. Multi-state complexity compounds across positions, and it recurs annually for as long as they are held.
What sponsors should do
The administrative choices a sponsor makes here have a direct and recurring effect on investor experience, at modest cost:
- File composites where available, and offer the election clearly with enough information for partners to decide.
- Provide complete state detail with the K-1, not on request. Incomplete state sourcing forces the investor accountant to chase during their busiest period.
- Communicate withholding in advance, so partners are not surprised by reduced distributions.
- Report the state footprint in ordinary investor reporting, so partners can anticipate obligations before the K-1 arrives.
For advisors
Multi-state complexity is one of the more under-modelled costs of a private markets allocation. It is not a one-time transaction expense; it is an annual charge in preparation fees and client irritation, for the life of the position.
That does not argue against the allocation. It argues for pricing it into the comparison — particularly where a similar exposure is available in a REIT or registered fund wrapper that issues a 1099 and generates no state obligations at all. For some clients, that difference is worth more than a modest return advantage.
This guide is educational and general; it is not tax advice. State tax rules vary substantially and change frequently; consult a qualified tax adviser familiar with the relevant jurisdictions.
Frequently Asked Questions
Why does a K-1 create filing obligations in other states?
Because partnership income is generally sourced to the states where the partnership conducts business or holds property, and states tax nonresidents on income sourced within them. A partner receiving an allocation of income sourced to a state may have a filing obligation there regardless of where they live.
What is a composite return?
A return the partnership files on behalf of participating nonresident partners, reporting and paying their state tax on the partnership-sourced income. It relieves participating partners of filing individually in that state, at the cost of being taxed under the composite rules, which may not reflect their personal circumstances.
What is nonresident withholding?
A payment the partnership remits to a state on behalf of nonresident partners against their anticipated liability there. Unlike a composite return, withholding does not generally eliminate the filing obligation; the partner may still need to file and can typically claim the withheld amount as a credit.
Should I join a composite return?
It depends on the individual circumstances. Composites usually tax at the highest applicable rate without personal deductions, exemptions, or the ability to use other state-specific attributes, so they can cost more than filing individually. They also save preparation fees and administrative burden. Whether the trade favours joining varies by state and by taxpayer.
Does my home state give credit for tax paid elsewhere?
Most states provide a credit for taxes paid to other states on the same income, to mitigate double taxation. The mechanics and limits vary, and the credit may not fully offset the other state tax. This is a matter for a tax adviser familiar with the specific state combination.
Sources
- Internal Revenue Code Subchapter K (partnerships)
- IRS Schedule K-1 (Form 1065) instructions, including state supplemental reporting
- Multistate Tax Commission model provisions on nonresident partner withholding and composite returns
