5 Tax Red Flags in the First 90 Days of a New Fund (And How to Avoid Them)

By then, the window to fix them has closed.

Whether you're launching a private equity fund, a venture fund, or a search fund, the structural and tax decisions made at formation have an outsized impact on how much carry you actually keep, whether your portfolio companies qualify for QSBS, and how the IRS characterizes your income at exit.

This post covers the five red flags a PE-specialist CPA looks for in the first 90 days — and what to do about each one before the structure is locked in.

What Makes the First 90 Days So Critical for Fund Tax Strategy?

Most new fund managers are focused on the right things early on: finalizing the LPA, closing LPs, setting up the management company, and beginning deployment. Tax structuring often gets treated as an operational detail to sort out later.

The problem is that "later" is often too late.

Fund formation decisions — how carry is structured, where entities are domiciled, whether QSBS eligibility is mapped upfront — are extremely difficult and expensive to unwind once LPs are in and capital is deployed. The IRS and state tax authorities treat these decisions as binding, and retroactive restructuring can trigger tax events you were trying to avoid in the first place.

The good news: catching these issues in the first 90 days is straightforward if you know what to look for.

Red Flag #1: Carried Interest Not Documented as a Profits Interest at Grant Date

The mistake: Issuing carried interest without proper documentation of its structure as a profits interest — or failing to establish fair market value at the grant date.

Why it matters: For carry to receive long-term capital gains treatment at exit, it must qualify as a profits interest under IRS Revenue Procedures 93-27 and 2001-43. If carry is not properly documented at grant — including a contemporaneous FMV analysis showing the interest had no value at issuance — the IRS can recharacterize it as ordinary income or a fee, which is taxed at rates up to 37% versus 20% for long-term capital gains.

The Section 1061 three-year holding period requirement (introduced in the Tax Cuts and Jobs Act) adds another layer of complexity: if carry doesn't meet the holding period rules, it gets taxed at short-term rates regardless of how the underlying investment performed.

What to do: Work with a CPA who specializes in fund tax structuring to document carried interest properly at grant date. This means a written profits interest agreement, a contemporaneous FMV determination, and a clear record that the interest had no liquidation value at issuance.

Red Flag #2: GP Entity Domiciled in the Wrong State

The mistake: Incorporating the GP entity in a state chosen for convenience — often Delaware by default — without analyzing the tax implications of where your LPs and portfolio companies are actually located.

Why it matters: State and local tax (SALT) treatment of fund income, carry, and management fees varies significantly across jurisdictions. Some states have aggressive nexus rules that can pull GP income into their tax base even if the GP entity isn't incorporated there. Others have favorable treatment for investment partnerships that Delaware does not.

For funds with LPs or portfolio companies concentrated in high-tax states like California or New York, the GP entity's domicile can meaningfully affect the after-tax return on carry.

What to do: Before finalizing the GP entity, have a CPA model the SALT exposure across the states where your LPs are domiciled and where you expect to make investments. The right answer depends on your specific LP mix and deployment strategy — there is no universal "best state."

Red Flag #3: No QSBS Eligibility Mapped Upfront

The mistake: Deploying capital into portfolio companies without first confirming whether those investments can qualify for the Section 1202 Qualified Small Business Stock (QSBS) exclusion — and without structuring the fund to preserve that eligibility.

Why it matters: Under Section 1202, gains from the sale of QSBS held for more than five years can be excluded from federal income tax — up to $10 million per investor (with potential for more under certain structuring). For a fund with multiple LPs, the aggregate tax savings can be substantial.

But QSBS eligibility has strict requirements: the portfolio company must be a domestic C-corporation, must have had aggregate gross assets under $50 million at the time of issuance, must be in a qualifying trade or business (which excludes professional services, finance, hospitality, and several other categories), and the stock must be acquired at original issuance.

Funds that invest through certain entity structures — including some fund-of-funds arrangements — can inadvertently disqualify their LPs from claiming the exclusion even when the underlying investment would otherwise qualify.

Note: QSBS rules have been subject to legislative change, including updates under recent tax legislation. Confirm current thresholds and eligibility rules with your CPA before making investment decisions based on QSBS treatment.

What to do: Map QSBS eligibility for target portfolio companies before deployment. This includes confirming C-corp status, gross asset thresholds, and qualifying business category — and reviewing your fund structure to ensure it doesn't inadvertently block LP-level QSBS claims.

Red Flag #4: Fund Structure Chosen for Simplicity, Not Tax Efficiency

The mistake: Defaulting to a standard LP structure without analyzing whether it's the most tax-efficient choice for the fund's specific strategy, LP base, and expected investment types.

Why it matters: The "standard" two-entity structure (a management company and a GP/LP fund entity) is the right answer for many funds — but not all of them. Funds with significant foreign LP capital, tax-exempt LPs (endowments, pension funds), or a strategy that involves debt-financed investments may face Unrelated Business Taxable Income (UBTI) issues, FIRPTA withholding complications, or blocker entity requirements that a standard structure doesn't address.

Similarly, funds planning to invest in S-corporations, real estate, or certain international structures may need bespoke entity design to avoid structural tax problems that don't surface until much later.

Choosing a structure for simplicity now often means expensive restructuring — or an unexpected tax bill — later.

What to do: Before finalizing fund documents, have a CPA review the fund's investment strategy, LP composition, and target asset classes against the proposed structure. The goal is to identify edge cases before they become problems.

Red Flag #5: No Separation Between Management Company and GP Entity

The mistake: Blending the management company (which earns management fees) and the GP entity (which holds carried interest) into a single entity — or failing to maintain clear operational separation between them.

Why it matters: Management fees are ordinary income. Carried interest, when properly structured, is long-term capital gain. Mixing these income streams in a single entity — or allowing operational practices to blur the line between them — creates both tax exposure and legal liability risk.

From a tax perspective, the IRS looks for clear separation between fee income and carry income. A GP entity that also receives management fees, or a management company with GP-like economics, can trigger recharacterization of carry as fee income — eliminating the preferential tax treatment entirely.

From a liability perspective, a single entity structure provides no insulation between the fund's investors and the management company's operations.

What to do: Establish and maintain two separate entities from day one — a management company for fees and operations, and a GP entity for carry and fund economics. Work with both legal counsel and a CPA to ensure the operational and economic separation is real, documented, and maintained over time.

Frequently Asked Questions

What is the most important tax decision a new fund manager makes in the first 90 days?

The most important early decision is how carried interest is structured and documented. If carry is not properly established as a profits interest at grant date with contemporaneous documentation, the IRS can recharacterize it as ordinary income at exit — potentially costing fund managers millions in additional tax. This decision cannot be easily corrected after the fact.

Can a new fund change its structure after LPs have committed capital?

Restructuring after LP commitments are in place is possible but costly. It typically requires LP consent, legal restructuring fees, and can trigger tax events that offset any benefit. This is why catching structural issues in the first 90 days — before capital is deployed — is so important.

What is QSBS and why does it matter for PE and venture fund managers?

QSBS stands for Qualified Small Business Stock, defined under Section 1202 of the Internal Revenue Code. Gains from QSBS held for more than five years may be excluded from federal income tax up to certain limits. For fund managers and their LPs, QSBS eligibility can represent significant tax savings — but it requires upfront planning and proper fund structuring to preserve the benefit.

How does GP entity domicile affect taxes for a new fund?

The state where the GP entity is incorporated and operates affects how carry, management fees, and fund income are taxed at the state and local level. High-tax states like California and New York have aggressive nexus rules that can pull fund income into their tax base. The right domicile depends on the fund's LP mix, investment strategy, and where the fund managers are located.

When should a new fund manager hire a CPA who specializes in fund tax strategy?

Before fund documents are finalized. The most impactful tax planning happens at formation — once the LPA is signed and capital is committed, most structural decisions are effectively locked in. A fund-specialist CPA can review the proposed structure, flag issues, and recommend changes before they become permanent.

The Bottom Line

The first 90 days of a new fund are not just an operational sprint — they're the window in which the tax and structural foundation of the entire fund lifecycle is set. Getting these decisions right doesn't require heroic effort. It requires working with a CPA who understands fund-level tax strategy, not just compliance.