If 100% of your capital is tied up in a single stock and you lack additional funds to dilute your holding below 25%, a § 721 Exchange Fund is the primary tax-deferred vehicle designed for your situation. Unlike §351 ETFs, individual transferors contributing to a § 721 partnership are not required to pre-diversify before entry.
IRC § 721 defers capital gains taxes; it does not eliminate them. The original cost basis carries over into your partnership units and ultimate redeemed stocks (IRC § 723). Permanent tax elimination requires holding redeemed shares until death (securing a full step-up in basis under IRC § 1014) or donating shares directly to a qualified 501(c)(3) charity.
Understanding IRC § 721 Partnership Diversification
Tax-Free Contribution
Under IRC § 721(a), you contribute appreciated stock into a limited partnership in exchange for partnership units without recognizing immediate capital gains tax.
20% Illiquid Real Estate Rule
To satisfy IRC § 721(b) investment company anti-abuse rules, the partnership holds at least 20% of its portfolio in qualifying illiquid assets (typically real estate or private equity).
7-Year Lock-Up & Redemption
After remaining in the partnership for at least 7 years (satisfying IRC § 704(c)(1)(B) and IRC § 737 mixing-bowl rules), you can redeem your units tax-free into a diversified basket of public stocks.
§ 721 Tax Deferral & Growth Estimator
Compare immediate taxable stock sale vs. contributing 100% of gross stock into a § 721 exchange fund over a 7-year lock-up horizon.
Position Parameters
Prefer Immediate Public Liquidity Over a 7-Year Lock-Up?
If you have outside capital to contribute alongside your concentrated shares to meet § 351(e) pre-diversification rules, a § 351 Conversion ETF gives you immediate public market liquidity without a 7-year lockup.
Check §351 25/50 Rule Eligibility →Relocating to a Low-Tax State Before Stock Realization?
High-net-worth executives moving between states must navigate strict statutory day-count rules and RSU/equity state sourcing allocation formulas before realizing capital gains.
Key Disclosures & Fee Structures
Partnership Management Fees
Traditional §721 exchange funds typically charge annual management fees ranging from 0.80% to 1.50% of asset value, plus upfront or back-end redemption fees. Compare fee drag against tax-deferral compounding.
20% Real Estate Illiquidity Exposure
To satisfy IRC § 721(b) investment company rules, at least 20% of fund assets are allocated to illiquid real estate or private equity investments, which may perform differently than broad public equity markets.
7-Year Lock-Up Mechanics
Redeeming prior to the 7-year statutory period triggers taxable gain recognition under IRC § 704(c)(1)(B) and § 737. Investors must maintain long-term capital horizons.
Explore Related HNW Tax Strategies
Section 351 Conversion ETFs
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NUA Rollover Calculator
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Need Guidance on Section 721 Exchange Fund Sponsors?
Traditional §721 exchange funds carry minimum position sizes ($5M+) and specific sponsor availability. Click to be connected with an independent, fee-only CFP® specializing in concentrated stock strategies and exchange fund access.