Wealth Preservation · 8 min read

Buy, Borrow, Die — The Tax Strategy Behind How the Wealthy Build Generational Wealth

October 2025Shurek Wealth Protection

Three provisions of the tax code, unremarkable individually, create one of the most effective wealth accumulation frameworks available when combined deliberately. This is not a loophole — it is the code working exactly as written.

The Three Rules

Rule 1: Capital gains tax is only triggered when you sell. Hold Apple stock from $10,000 to $2 million over 30 years and owe nothing until the moment of sale. Unrealized gains are untaxed indefinitely.

Rule 2: Loan proceeds are never taxable. Borrowing against your portfolio is not a taxable event. A $1 million securities-backed line of credit generates $1 million of purchasing power with zero tax — unlike selling $1 million of stock, which might net only $762,000 after a 23.8% capital gains tax.

Rule 3: The step-up in basis at death permanently erases all accumulated gains. Under IRC Section 1014, heirs inherit at current fair market value. A stock worth $2 million with a $10,000 cost basis passes to heirs at $2 million basis — zero capital gains tax on $1,990,000 of lifetime appreciation. This provision was explicitly preserved under current law.

Buy: Hold Appreciated Assets, Do Not Sell

The discipline of not selling appreciated positions — even when you need liquidity — is the most important element of the strategy. Every year an appreciated position is held rather than sold, the unrealized gain compounds without tax drag and preserves the step-up opportunity at death.

Borrow: Access Liquidity Without Triggering Gains

A Securities-Backed Line of Credit (SBLOC) provides 50–70% of portfolio value at competitive floating interest rates. When you need $1 million for a real estate down payment, a business acquisition, or any other purpose, borrowing produces the full $1 million while a sale produces $762,000 after capital gains tax.

Borrow vs. Sell — $1.5M Liquidity Need

$1.5M

Tax-free SBLOC proceeds — full amount deployed

$303,450

Capital gains tax if selling appreciated position instead

$67,500

Annual interest cost at 4.5% — far less than the $303,450 tax

$8.5M

Accumulated gain may be eliminated under current law at death via step-up

Die: The Step-Up Erases Everything

At death, all appreciated assets receive a step-up to current fair market value. Outstanding SBLOC balances are estate liabilities — reducing the taxable estate. Heirs sell assets at stepped-up basis to repay loans — no capital gains tax on your lifetime of appreciation.

For large estates, the buy-borrow-die strategy addresses the income tax dimension of wealth transfer (eliminating capital gains through the step-up) while estate planning structures (SLATs, dynasty trusts, FLPs) address the estate tax dimension. The two approaches coordinate, not compete.

One Critical Risk: Margin Calls

If the portfolio declines significantly during a market downturn, the lender may reduce available credit or require immediate repayment — potentially forcing sales at market lows, triggering the very capital gains you sought to defer. Maintaining significant cushion above the loan balance (we recommend at least 2x the outstanding balance in portfolio value) is essential risk management for this strategy.

Legislative Watch

Proposals to eliminate or limit the step-up in basis have appeared periodically in Congressional budget proposals. None have passed, and current law explicitly preserves it. Monitoring this legislation is part of ongoing client advisory work — any change in law would require adjusting the strategy before the effective date.

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