Home Purchase Liquidity Engineering for Law Firm Partners

Buying a personal residence for $8 million or more is not primarily a real estate decision. It’s a balance sheet event that touches on portfolio construction, tax positioning, credit strategy, entity design, and estate planning simultaneously. For law firm partners, whose income tends to arrive on a less than predictable schedule, the capital required to close on a high-end home must be sourced from a liquidity system that is already under structural strain.

A home purchase at this level is qualitatively different from a $2 million or $4 million transaction. Most mainstream jumbo lenders cap loan amounts between $2 million and $5 million. Financing above $5 million typically requires a portfolio lender or private bank willing to underwrite based on total asset strength rather than standard income-to-debt ratios. At $8 million, buyers should expect:

• Down payment requirements of 25–30%, or $2 million to $2.4 million in cash
• Credit score requirements of 740+ for best terms
• Liquid reserves of 12–18 months of PITIA (principal, interest, taxes, insurance, assessments) post-close
• Jumbo mortgage rates currently averaging ~6.25% on a 30-year fixed basis

For a partner whose annual spendable cash after taxes, capital contributions, and firm obligations may be $2.6 million to $2.8 million on a $6.2 million allocation, assembling a $2 million-plus down payment while maintaining adequate reserves is a material planning event.

At the $8 million price point, one-time acquisition costs accumulate quickly. In New York City, for example:

The Mansion Tax alone, at 2.25% for purchases between $5 million and $10 million, represents $180,000 in non-negotiable buyer closing costs. Outside of New York City, similar transfer taxes apply in jurisdictions like Connecticut (approximately 2.25% on sales above $2.5 million) and other high-value markets. Total buyer-side closing costs on an $8 million NYC purchase can easily approach $300,000 or more. These costs must be funded alongside the down payment, meaning the total capital required at closing isn’t $2 million; it’s closer to $2.3 million or more.

If the down payment is funded partly through the sale of appreciated securities, the tax cost must be modeled precisely. A partner selling $2 million in appreciated stock with a cost basis of $800,000 faces:

• Federal long-term capital gains tax (20%): $240,000
• Net Investment Income Tax (3.8%): $45,600
• State and local capital gains tax (varies by jurisdiction, potentially 8–12%+): $96,000–$144,000

The total tax cost of liquidating $2 million in securities could approach $380,000–$430,000, meaning the partner may need to sell well over $2 million to net $2 million for the down payment.

Tax-loss harvesting, lot-specific identification, and the timing of sales across calendar years (particularly if income fluctuates) are all levers that a coordinated advisory team should evaluate before any shares are sold. But even when the liquidity plan has been identified, the carrying cost calculation remains. The mortgage interest deduction is permanently capped at $750,000 of acquisition indebtedness under the One Big Beautiful Bill Act “OBBBA,” which made the 2017 TCJA limitation permanent. On a $6 million mortgage (after a $2 million down payment), only a fraction of the interest is deductible. At 6.25%, annual interest of approximately $375,000 would accrue, but only the interest attributable to the first $750,000 of principal (roughly $47,000) would qualify for the federal deduction.

The SALT deduction cap, increased to $40,000 for 2025 via the OBBBA (and $40,400 for 2026), phases down for filers with MAGI above $500,000 in 2025 and $505,000 in 2026, with the cap hitting a floor of $10,000 for incomes at approximately $600,000 in 2025 and $606,333 in 2026 or higher. For a law firm partner with multi-million-dollar income, the effective SALT deduction will almost certainly be limited to $10,000, meaning the property tax on an $8 million home (which can easily run $80,000 to $150,000+ annually depending on jurisdiction) produces virtually no federal tax benefit.

The combined effect is that a significant portion of the carrying cost of a high-end home is borne entirely out of after-tax dollars, with minimal federal deduction offset. This is a meaningful shift from pre-2018 planning assumptions and must be incorporated into the liquidity model from the outset.

For a partner contemplating an $8 million home, the central design question is: How should the purchase price be funded across cash, credit, and portfolio resources in a way that preserves long-term flexibility? Even buyers with sufficient liquid assets to pay all cash, financing at this level is often a deliberate wealth management decision rather than a necessity. The calculus involves several competing considerations.

In favor of maximizing leverage:

• Preserves invested capital that may compound at rates exceeding the after-tax cost of borrowing
• Avoids triggering capital gains and the 3.8% Net Investment Income Tax (NIIT) on liquidating appreciated positions to fund the purchase
• Maintains portfolio diversification and avoids concentrating net worth further into illiquid personal real estate
• Retains securities as collateral for future credit flexibility

In favor of a larger down payment or all-cash purchase:

• Eliminates or reduces interest expense that is largely non-deductible above the $750,000 acquisition debt threshold
• Removes the need for extensive lender underwriting and documentation, which can be complex for partnership income
• Avoids ongoing debt service that competes with quarterly estimated tax payments, firm obligations, and living expenses
• Strengthens the purchase offer in competitive markets

For most partner households, the optimal answer is rarely all-cash or maximum leverage. Typically, a down payment in the 30–40% range funded from a combination of cash reserves and, in some cases, a securities-based line of credit (SBLOC), paired with a private bank mortgage structured for the specific household’s cash flow profile.

An SBLOC can serve as a powerful tool in the closing process. By borrowing against a taxable investment portfolio, a partner can fund a portion of the down payment or closing costs without liquidating appreciated securities, avoiding federal capital gains of up to 20% plus the 3.8% NIIT, which would otherwise apply at the income levels typical of equity partners. The SBLOC draw itself is not a taxable event. The partner can then repay the line over time using firm distributions, bonus tranches, or proceeds from subsequent, tax-optimized asset sales. However, the risks of SBLOCs are real and must be modeled explicitly:

• Market risk: A significant decline in collateral value (30%+) can trigger margin calls or force liquidation at the worst possible time. Sizing the SBLOC conservatively, typically below 40% of eligible collateral, is prudent.
• Interest rate exposure: SBLOC rates are typically variable, tied to SOFR or the Federal Funds rate, meaning carrying costs can increase materially if rates rise.
• Interaction with the home mortgage: The SBLOC balance competes for the same liquidity that services the mortgage, property taxes, and estimated tax payments. The repayment timeline must be mapped against the distribution schedule.

An SBLOC should be structured with a defined repayment plan, not treated as permanent financing. Its value is in bridging the timing gap between what the closing requires and when cash arrives from the firm.

At the $8 million purchase level, private bank mortgage products offer structures that standard lenders do not. These may include:

• Interest-only periods of 5–10 years, reducing initial monthly outlays and preserving cash flow for tax obligations and portfolio reinvestment
• Asset-based underwriting that evaluates the borrower’s total portfolio rather than solely W-2 income or partnership K-1 distributions
• Flexible terms for borrowers with complex income structures, including the irregular distribution patterns common to partnerships
• Cross-collateralization options that combine the mortgage with other private banking relationships, potentially improving rate terms

Interest-only mortgages are particularly relevant for partners in their peak earning years. The lower initial payment creates breathing room for quarterly estimated taxes and firm capital calls, while the partner retains the option to accelerate principal payments when distributions exceed projections.

For partners with a home valued at $8 million or more, holding the property in a properly structured LLC can help limit personal exposure by keeping the owner’s name out of easily searchable public records, an increasingly important consideration as high-profile individuals have been targeted through basic property record searches. LLC ownership can offer several additional advantages beyond privacy:

• Liability insulation: An LLC separates the property from the partner’s other personal assets, potentially limiting exposure from claims arising on the premises. This protection is strongest in multi-member LLC structures; single-member LLCs treated as disregarded entities offer weaker protection in many jurisdictions.
• Fractional transfer capability: Rather than an all-or-nothing decision to keep or sell, LLC membership interests can be gifted, sold, or transferred to trusts in increments. This is particularly valuable for multigenerational planning.
• Valuation discount planning: Minority interests in real estate LLCs may qualify for lack-of-marketability and lack-of-control discounts, typically ranging from roughly 10–40% when supported by qualified appraisals. This can reduce the gift or estate tax cost of transferring interests to the next generation.

In jurisdictions like Florida, holding a primary residence in an LLC may forfeit the homestead property tax exemption. The LLC must be properly maintained, with separate accounts, operating agreements, and compliance with state requirements, to sustain any applicable liability protection.

Combining LLC ownership with a grantor trust strategy creates a layered structure that can shift long-term appreciation outside the taxable estate while preserving day-to-day control and income tax integration. Following the purchase of the residence, a partner sells LLC membership interests to an intentionally defective grantor trust (IDGT) in exchange for a promissory note. Because the trust is a grantor trust for income tax purposes, the sale is not a taxable event. The note creates a defined cash flow stream back to the partner, and all future appreciation on the property accrues inside the trust, outside the partner’s taxable estate. The real power of this approach lies in how the LLC operating agreement and the sale terms are designed to keep the economic burden, mortgage, maintenance, property taxes, and insurance in the partner’s hands while allowing the trust to accumulate the property’s appreciation largely unencumbered. There are several mechanisms that make this work:

• Retained managing member role: The LLC operating agreement can designate the partner as the managing member with full authority over property operations, maintenance, repairs, capital improvements, insurance, and mortgage management, even after majority membership interests have been sold to the IDGT. This preserves day-to-day control without requiring the trust to manage the property or fund ongoing costs.
• Expense allocation through the operating agreement: The operating agreement can allocate operating expenses, property taxes, insurance premiums, maintenance, and mortgage payments, disproportionately to the managing member rather than pro rata across all members. This means the trust's economic interest is insulated from the carrying costs, allowing the trust's share of the property's value to compound without being drawn down by ongoing obligations.
• Mortgage retention by the partner: The partner can retain personal responsibility for the mortgage on the property. Because the IDGT is a grantor trust, the transfer of encumbered LLC interests does not trigger a taxable gain event, there is no deemed disposition when the borrower and the trust are the same person for income tax purposes. The partner continues servicing the debt, which further reduces the partner's taxable estate (each mortgage payment is effectively a transfer of value) while protecting the trust from leverage risk.
• Grantor's income tax payments as a tax-free wealth transfer: Because the partner continues to pay the income taxes on all trust activity, including any rental income, if applicable, or gain on eventual disposition, the trust assets grow free of income tax drag. The IRS has confirmed that these tax payments by the grantor are not treated as additional gifts, making this one of the most efficient wealth transfer mechanisms available.
• Note structure that favors trust accumulation: The installment note can be structured as interest-only for the majority of its term, with a balloon payment at maturity. At the current Applicable Federal Rate (AFR), the required interest payments from the trust to the partner are modest relative to the property's expected appreciation. The lower the note payments, the more value accumulates inside the trust for beneficiaries. The partner can also coordinate note payments to replenish specific liquidity tiers, aligning them with the distribution schedule from the firm rather than competing for the same cash flow.

The net effect is a structure in which the partner retains practical control and bears the cost of ownership, while the trust captures the lion’s share of long-term appreciation without the friction of taxes or carrying costs. For an $8 million residence in a market appreciating at 3–4% annually, the value shifting to the trust can be substantial over a 10- to 15-year+ horizon.

The purchase of an $8 million home sits at the intersection of five distinct planning disciplines:

• Income and cash flow modeling: Mapping the partner’s allocation, distribution history, and firm-specific practices to project actual spendable cash across multiple years
• Portfolio construction and liquidity design: Structuring the investment portfolio so that the down payment, ongoing carrying costs, and contingency reserves are sourced without distorting long-term allocation targets
• Tax-aware capital sourcing: Determining the most efficient combination of cash, credit, and asset sales to fund the purchase, minimizing capital gains, NIIT, and the ongoing carrying cost of non-deductible interest
• Estate and entity coordination: Evaluating whether LLC structures, grantor trusts, or other structures should be established before or concurrent with the purchase, and how title should be held from day one to avoid costly restructuring later
• Credit capacity and risk management: Sizing mortgage and SBLOC commitments conservatively, with defined repayment plans and stress-tested collateral coverage

When these five disciplines are addressed independently (a mortgage broker here, a CPA there, an estate attorney later), the result is often a serviceable but fragile structure. When they are modeled as an integrated system, the purchase becomes a deliberate extension of the partner’s broader financial architecture – aligned with how partnership economics work, resilient under stress, and positioned for the long term.

At Wealthspire, this is precisely how we approach these decisions. As an independent fiduciary advisory firm compensated on assets under management rather than product distribution, our role is to coordinate across all five dimensions, building the models, stress-testing the assumptions, and working alongside the partner’s CPA and outside counsel to ensure that an $8 million home purchase strengthens the balance sheet rather than straining it. Planning a home purchase or other major liquidity event? Stress-test your liquidity, taxes, and credit strategy by contacting us.

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