What is the “Buy, Borrow, Die” strategy? It is a wealth-preservation framework where you hold appreciating assets, borrow against them instead of selling, and rely on current inherited-basis rules at death. Loan proceeds generally are not income, but borrowing costs, collateral calls, estate tax, and future law can change the outcome.
Step-by-step breakdown
- Buy. Acquire high-quality, appreciating assets that can serve as loan collateral, such as real estate, private business equity, or index funds. The goal is to accumulate substantial unrealized gains without selling and triggering a tax event.
- Borrow. Instead of selling to raise cash, take a loan secured by your portfolio, structured as a securities-backed line of credit (SBLOC), a margin loan, or a home equity line. Loan proceeds generally are not taxable income, but the debt accrues interest and the lender can require more collateral or a sale.
- Die. Under current federal rules described in IRS Publication 559, inherited-property basis is generally tied to fair market value at death. That can reduce built-in capital gain, but estate tax, income in respect of a decedent, state rules, and other exceptions still matter.
The math of borrowing: a worked example
Consider an investor holding a $5 million stock portfolio with a $1 million cost basis, representing $4 million in unrealized gains.
- Scenario A: selling for cash. To access $1 million, the investor sells part of the portfolio, triggering a capital gains event. At top federal rates (20% capital gains plus 3.8% NIIT), the tax on those gains is a significant out-of-pocket cost.
- Scenario B: borrowing against the portfolio. The investor takes a $1 million line of credit secured by the stock and generally recognizes no income from receiving the loan. They pay interest and keep market exposure. At death, current inherited-basis rules may reduce the built-in gain, but the estate still has to repay the debt and evaluate estate tax and other exceptions.
Risks and limitations to consider
The strategy can defer a sale, but it carries real risks:
- Interest-rate fluctuations. Borrowing is not free. If rates rise or exceed your portfolio’s returns, the cost of carrying the debt can outweigh the taxes you are deferring.
- Collateral-call risk. Borrow against volatile assets and a sharp market decline can trigger a maintenance call, forcing you to add collateral or liquidate at the bottom. FINRA’s discussion of securities-backed lines of credit describes this risk.
- Federal estate tax and basis exceptions. Current inherited-basis rules can reduce built-in gain, but they do not erase every tax consequence. Large estates may owe federal estate tax, some assets follow different basis rules, and future law can change.
- Reduced flexibility. Assets locked as collateral limit your ability to rebalance, leaving you concentrated in specific positions.
Is this strategy right for you?
Buy, Borrow, Die is best suited to individuals with large, low-basis, highly appreciated assets and reliable cash flow to service interest. It needs careful modeling against your cash flow, tax brackets, and long-term estate plans.