Debt to Forestall Gain Recognition

Selling an appreciated asset triggers capital gains tax immediately. Borrowing against it does not. This strategy — sometimes called “buy, borrow, die” — lets you access the economic value of appreciated assets while indefinitely deferring the capital gains recognition event.

For context on how capital gains are taxed, see capital gains vs ordinary income and capital gains tax strategies.

Key Takeaways

• Loans are not taxable events — borrowing against appreciated assets does not trigger capital gains.
• Two primary vehicles: cash-out mortgage refinancing (real estate) and securities-backed lending (stocks).
• The step-up in basis at death (IRC §1014) can permanently eliminate deferred gains for heirs.
• Interest costs are real — the net benefit depends on what you earn with borrowed funds.

How It Works

When you own an appreciated asset — a rental property, a stock portfolio, or a business — selling it triggers a taxable gain. The gain is the difference between your sale price and your original cost basis.

Borrowing against the asset is different. Loan proceeds are not income. You receive cash, but you also incur a liability. The IRS does not treat this as a realization event. Your unrealized gain remains deferred until you actually sell.

The deferral has real value: every year you defer a tax payment, you keep those dollars invested and earning returns. At a 4% discount rate, deferring a $45,000 tax bill is worth approximately $1,800/year in time-value benefit.

Two Main Vehicles

1. Cash-Out Mortgage Refinancing

If you own appreciated real estate, you can refinance your mortgage and extract equity as cash. The refinance replaces your existing loan with a larger one; the difference comes to you tax-free.

Example: You bought a rental property for $300,000. It’s now worth $800,000. You refinance at 70% LTV, pulling out $560,000. You pay no capital gains tax — the $500,000 gain remains unrealized. You use the proceeds to invest or fund other goals.

Interest deductibility: Mortgage interest on acquisition debt (used to buy, build, or improve a home) is deductible up to $750,000 ($1M for pre-2018 loans) on a primary or secondary residence. Cash-out refinance proceeds used for investment purposes may qualify as investment interest expense.

2. Securities-Backed Lending

If you hold highly appreciated stocks, ETFs, or other securities in a taxable brokerage account, you can borrow against them without selling.

Options include:

• Margin loans — offered by most brokerages; higher rates but flexible
• Pledged asset lines (PAL) — offered by Fidelity, Schwab, and others at lower rates
• Portfolio margin — for larger portfolios; can access higher leverage

Example: You hold $1,000,000 in appreciated tech stock with a $100,000 basis. Selling would trigger $135,000 in federal capital gains tax (at 15%). Instead, you borrow $500,000 against the portfolio at 7%. You keep the position, the gain stays deferred, and you access the cash you need.

The “Buy, Borrow, Die” Strategy

At its most powerful, this strategy is combined with the step-up in basis at death (IRC §1014). When an asset is inherited, the heir receives a new cost basis equal to the fair market value on the date of death. The deferred gain from the original owner’s lifetime is permanently eliminated.

The full cycle:

1. Buy an appreciating asset
2. Borrow against it to fund living expenses or investments (never sell)
3. Die — heirs inherit the asset with a stepped-up basis, eliminating the accumulated gain

This is a legitimate strategy used by high-net-worth families and has been in the tax code for decades, though it has drawn policy scrutiny.

The Real Cost: Interest

Borrowing isn’t free. Annual interest on a $500,000 loan at 7% is $35,000/year. After any tax deduction, this is a real ongoing cost that must be weighed against:

1. The annual time-value benefit of deferral
2. The return earned on the deployed borrowed funds
3. The potential step-up benefit at death

If the assets underlying the loan continue to appreciate — or if the borrowed funds are productively invested — the strategy can be strongly net positive. If the loan is used for consumption and assets decline, the math can work against you.

Risks and Considerations

Margin calls: Securities-backed loans can trigger margin calls if your portfolio declines. Lenders may force a sale at exactly the wrong time — crystallizing the gain you were trying to defer.

Interest rate risk: Variable-rate borrowing exposes you to rate increases. Lock in fixed rates where possible for long-term loans.

Tax law risk: The step-up in basis at death has faced legislative scrutiny. Future tax law changes could limit or eliminate this benefit.

Complexity: This strategy requires coordination with a CPA, financial advisor, and potentially an estate attorney. It is not a DIY strategy for most taxpayers.

Interaction with Other Strategies

• Tax Loss Harvesting: Can offset gains if you ever do sell
• 1031 Exchange: Alternative for real estate — defer gains by exchanging into a like-kind property
• Charitable Remainder Trust: Donate appreciated assets to a CRT, avoid immediate gain, receive income stream
• Qualified Opportunity Zone: Invest realized gains into a QOZ fund to defer and reduce the tax

Who This Strategy Is For

This strategy is best suited to taxpayers who:

• Hold highly appreciated assets (real estate, concentrated stock positions, business interests)
• Need liquidity but do not want to trigger a taxable sale
• Have long time horizons (the longer you defer, the greater the time-value benefit)
• Have sufficient income or other assets to service the debt
• Are working with a qualified tax and financial advisor