The strategy the wealthiest 1% have used for generations to compound assets and pass them to heirs without ever paying capital gains tax. Bitcoin makes the same playbook available to anyone with a sound-money portfolio. Here's how it works — and a calculator that shows whether the math holds for your situation.
Every dollar you earn through wages gets taxed once at income rates and again every time it changes form. Every dollar of asset appreciation, never sold, never gets taxed at all. Buy/Borrow/Die is the legal architecture for staying on the second side of that line.
Acquire a long-duration appreciating asset — Bitcoin, equities, real estate, a business. The longer the time horizon, the better the math works. Bitcoin is uniquely well-suited because its supply cap forces appreciation against an inflating money supply.
Instead of selling the asset to fund your life, borrow against it. Loans are not income. No capital gains tax, no income tax, no taxable event of any kind. The asset keeps appreciating in your name; you spend the loan proceeds.
At death, US tax law gives your heirs a "stepped-up basis" — they inherit the asset at its current market value with all prior gains erased. They sell some to pay off the debt; the rest passes tax-free. The IRS never collects the capital gains. Generationally, this is the cheat code.
For Buy/Borrow/Die to work, the asset needs to appreciate faster than the interest on the debt against it. Real estate has historically delivered 4–6%/year, which means it works only with very low interest rates. Equities at ~9%/year work in most environments. Bitcoin's CAGR over its 15-year history is roughly 60%. Even if you assume that drops dramatically as the asset matures — say to 15–25% — it dwarfs typical loan rates of 8–12%. The spread is the engine.
This calculator simulates two strategies side-by-side over your chosen time horizon: Buy/Borrow/Die (borrow against your BTC to fund expenses) vs. Sell-as-you-go (sell BTC each year to fund expenses, paying capital gains tax). It tells you which strategy leaves your estate larger — and warns if your debt would trigger a margin call.
Used only to compute the BBD scenario. Loan proceeds are not taxable income.
Used only for the sell-as-you-go comparison. Has no effect on BBD — borrowing against BTC is not a taxable event under current US law.
Buy/Borrow/Die is powerful, but the failure modes are real and unforgiving. The strategy is not "free money."
If BTC drops sharply and your LTV crosses the lender's threshold, they'll force-sell your collateral at the worst possible time. The 2022 crypto credit collapse was largely this. Defense: keep LTV well under 30–40%, even if you could borrow more.
If loan rates rise faster than BTC appreciates, the math inverts. You start losing equity each year instead of gaining it. Watch the spread between your asset CAGR and your debt cost like a hawk.
You're trusting the lender to hold your collateral safely and not rehypothecate it. Use only platforms with proof-of-reserves (Unchained's collaborative custody is the gold standard) and avoid anyone offering implausibly low rates.
The stepped-up basis at death is a US tax provision that exists because Congress allows it. It has been targeted for elimination multiple times. The strategy still works without the step-up — the deferral alone is enormously valuable — but the "tax wipeout" benefit could change.
Three names worth researching today: Unchained Capital (collaborative custody, you control 1 of 3 keys — the highest standard for safety), Ledn (transparent, audited, no rehypothecation by default), and Strike (newer, integrated with their buying platform). All three offer LTVs in the 30–50% range with rates roughly tracking SOFR + a spread. Favor conservative LTVs and segregated custody over flashy rate quotes.
Keep in mind: Bitcoin-backed lending is still a relatively young market. The product set, the rate environment, and the custody standards have all evolved meaningfully every year. As Bitcoin adoption grows and traditional finance keeps stepping in (banks, brokerages, ETF issuers), expect significantly more options, tighter spreads, and more competitive terms over the coming decade. The right strategy is to start with the safest provider that fits your situation today, and re-evaluate annually as the market matures.