Buy Borrow Die Strategy Examples: Real Structures the Ultra-Wealthy Actually Use

Elon Musk pledged Tesla shares as collateral for personal loans reportedly exceeding $3.5 billion at various points, using those proceeds to fund SpaceX investments and personal expenses without selling a single share. The mechanics are straightforward: a prime brokerage or private bank accepts the equity position as collateral and extends a line of credit at 50 to 70 percent of the portfolio's value. Interest on the loan, roughly SOFR plus 1 to 2 percent for ultra-HNW borrowers, is typically paid from new borrowing against the same appreciating asset base. No sale means no capital gains tax, and the loan itself is not income. For a deeper look at how the lending side of this structure is built, this breakdown of top Lombard loan providers covers which private banks offer the tightest spreads and most favorable covenant terms.

The Walton family holds Walmart shares primarily through grantor retained annuity trusts and family limited partnerships, structures that shift appreciation out of the taxable estate while the founder's basis resets at death under IRC Section 1014. A share bought at $1 and worth $100 at death passes to heirs with a $100 basis, wiping out $99 of embedded gain that was never taxed. The family borrows against the trust-held shares during their lifetime, receives annuity payments structured to minimize gift tax, and the stepped-up basis at death eliminates the deferred liability entirely. Reproducing this at a smaller scale is feasible with a family limited partnership established in Nevada or Wyoming, which charge no state income tax and offer strong charging order protections.

Real estate investors apply the same logic through the BRRRR cycle, buying undervalued property, renovating, refinancing to pull out equity tax-free, and holding indefinitely while depreciation offsets rental income. A $1 million property refinanced to 75 percent LTV returns $750,000 in cash to the investor, none of which is taxable because it is debt. Depreciation on the property, around $36,000 per year on a residential property using a 27.5-year schedule, offsets rental income dollar for dollar. At death, the heir receives the property at its then-current fair market value, the mortgage carries over, and the tax basis resets, erasing decades of deferred gain. Repeat this across a portfolio of 10 to 20 properties and the annual cash flow from refinancing plus depreciation shelter makes earned income taxation largely irrelevant.

Sotheby's Financial Services and a handful of private banks including Bank of America's Art Services division offer loans against fine art, typically at 40 to 50 percent of appraised value, with the artwork remaining on the borrower's wall. A Basquiat purchased for $500,000 in 2005 and appraised at $8 million today can support a $3.5 to $4 million loan without triggering the 28 percent collectibles capital gains rate that a sale would generate. The borrower uses that liquidity to fund operating expenses or additional investments, the art continues to appreciate, and the entire position is eventually bequeathed to heirs at a stepped-up basis. Art-secured lending is less standardized than equity-backed lending, so rates and LTV ratios vary significantly by lender and piece.

U.S. persons cannot escape the step-up basis rule by moving abroad, but non-U.S. persons and those who expatriate before assets appreciate significantly can combine buy borrow die with zero-capital-gains jurisdictions such as the UAE, Cayman Islands, or Singapore. A Singapore tax resident holding a globally diversified equity portfolio pays zero capital gains tax on disposal and zero tax on loan proceeds, making the borrow leg purely optional as an asset protection mechanism rather than a tax avoidance tool. For families with multi-jurisdictional footprints, a Cayman Islands holding company borrows against the portfolio via a Swiss or Singapore private bank, and the interest expense flows to an entity in a jurisdiction that taxes passive income, generating a deduction where income exists. The setup is more complex and requires genuine substance in the chosen jurisdiction, but the math is compelling for portfolios above $20 million.

Three failure modes have ended buy borrow die structures in practice. First, margin calls: Elon Musk himself faced potential forced selling of Tesla shares during the 2022 Twitter acquisition financing, and borrowers who pledge more than 50 percent of a concentrated single-stock position risk catastrophic liquidation in a downturn. Second, legislative risk: the Biden administration's unrealized gains tax proposals, if enacted, would directly attack the borrow leg by taxing appreciation annually regardless of sale, and similar proposals resurface every two to three years. Third, estate tax exposure: for U.S. persons with estates above $13.6 million (the 2024 exemption, which reverts to approximately $7 million in 2026 without congressional action), the stepped-up basis benefit is partially offset by a 40 percent federal estate tax on the gross asset value, including the appreciated position used as collateral.