Cryptocurrency Backed Loans as Collateral for a Home
Two Liens and Bitcoin as Collateral on the Home
Abstract: This memo examines the mechanical and legal structure of the newly announced partnership between Better Home & Finance and Coinbase Global. The new program is designed to allow for the use of a cryptocurrency-backed loan as collateral for a down payment on a home. While marketed as a solution to avoid capital gains taxes by pledging cryptocurrency for a down payment, a close reading of the program’s Terms and Conditions reveals a lopsided financial arrangement. The product utilizes a 40% Advance Rate on Bitcoin -- effectively requiring the borrower to over-collateralize the loan by 250% -- while securing the debt with a second lien on the residential property. This creates an expensive, cross-collateralized environment where a borrower’s primary residence and their digital assets are both at risk in the event of a 60-day delinquency.
Introduction:
A Wall Street Journal article announced the introduction of a new token-backed mortgage program, a joint initiative by Better Home & Finance and Coinbase Global. The program allows homebuyers to secure a Fannie Mae-conforming mortgage by using a second lien backed by substantial crypto currency collateral instead of making a traditional cash downpayment.
In theory, there is no inherent problem with a lender using a financial asset as additional collateral in a real estate transaction or as a different form of collateral than a cash down payment. If structured correctly, financial collateral allows the borrower to maintain a more diversified portfolio and creates critical diversification for the mortgage holder. This “collateral cushion” can protect the lender in a default scenario where housing prices collapse and traditional equity turns negative. In fact, I argued for this exact type of structural diversification in a paper I wrote and presented in the early 1990s.
This note looks at the terms and conditions of the new financial product, provides an example comparing a house purchase with a traditional mortgage to one with the new product and provides some comments.
Summary of Terms and Conditions
The full text of the terms and conditions of the new financial product are at: Better.com - Token-Backed Mortgage Program Terms and Conditions
The Advance Rate (Defined): In lending, the Advance Rate is the maximum percentage of an asset’s value a lender will provide as a loan. Bitcoin (BTC) has a 40% Advance Rate for this transaction. This means that to get a $100,000 loan for the downpayment, you must pledge $250,000 in BTC—effectively a 250% collateralization ratio.
Dual-Loan Structure: Qualified customers obtain a “Downpayment Loan” (secondary) to fund the cash required for a “Token-Backed Mortgage Loan” (primary).
The Second Lien: The Downpayment Loan is secured by both the pledged digital tokens and a second lien on the residential property.
The “Lock” Period: Pledged tokens are moved to a custodial account and cannot be sold, transferred, or re-pledged without prior written consent.
Liquidation Rights: If a default occurs, the lender has the immediate right to sell or liquidate the pledged tokens to satisfy the debt.
Financial Comparison: The $500,000 Purchase
The $500,000 home can be purchased with either a traditional loan or the new token-backed program.
The Traditional Approach involves the buyer selling approximately $115,000 in Bitcoin to cover the down payment and the associated capital gains tax. This results in a $400,000 mortgage (80% LTV), with monthly payments based only on that balance and a single lien on the home. The borrower maintains 20% home equity from day one and full control over any remaining Bitcoin.
The Token-Backed Program (Pledging Assets) involves the buyer pledging $250,000 in Bitcoin to secure a $100,000 loan. This results in a $500,000 total debt load (100% LTV), monthly interest payments on the full purchase price, and a high-risk “double lien” on both the home and the crypto. The borrower is legally barred from selling their Bitcoin to lock in gains and is exposed to a $750,000 total collateral risk (house + crypto) in case of default.
IV. Critical Analysis & Comments
1. Substantial Increase in Monthly Payments
The Downpayment Loan carries the same interest rate as the primary mortgage. In a traditional purchase, a down payment is equity that reduces your debt. In this program, that down payment is debt. You are paying interest on 100% of the home’s value, increasing your monthly obligation by roughly 25%.
2. The Most Alarming Risk: The Second Lien
The Downpayment Loan is secured by a second lien on the residential property. If you fail to pay the crypto-backed portion, the lender has a legal claim to your house. You aren’t just pledging your Bitcoin; you are pledging your home twice.
3. Massive Collateral Exposure
In the $500k example, you have pledged a $500,000 home and $250,000 in Bitcoin. A 60-day delinquency allows the lender to liquidate your tokens and potentially foreclose. For a $100,000 loan benefit, you are exposing $750,000 in total collateral.
4. Circumventing Tax Policy Goals
The rationale behind the policy of maintaining a capital gains tax rate lower than the tax rate on ordinary income is to motivate investors to realize capital gains. This product encourages borrowers to avoid a one-time 20% tax hit by taking on up to 30 years of interest on a new loan. This is probably a bad deal for investors. More importantly, this type of financial gimmickry undermines incentives for people to take gains and ultimately could erode support for the preferential rate on capital gains.
5. The “Locked Upside” Constraint
If Bitcoin’s price surges, the borrower cannot easily “take chips off the table.” The pledged assets remain encumbered and cannot be sold or reallocated without repaying or refinancing the associated loan. While exit is possible—through refinancing, partial repayment, or other sources of liquidity—it requires introducing new capital or leverage. In practice, this structure limits the borrower’s ability to actively manage or diversify their crypto exposure during the life of the loan.
6. Policy does not address broad affordability concerns
The main problem with the housing market right now is a vast number of young buyers cannot afford a new home. A person with $250,000 in crypto assets who does not want to sell the assets because of a potential capital gains is not a person with an affordability constraint.
Why is this program even being considered right now?
Conclusion
A fairer way to diversify collateral and prevent lender losses is to use stable, high-quality financial assets to provide a liquidity buffer that doesn’t rely on a second lien on the home. As I argued in my early 1990s research, the conceptual goal of using financial assets as collateral is sound: it allows for a more diversified portfolio for the borrower and provides the lender with protection against the “negative equity” scenarios that devastated the market in 2008.
However, the 2026 crypto-pledge model fails the test of financial sanity. It insulates the lender from loss at a lopsided and ultimately punitive cost to the homeowner. This product remains a bad deal because it replaces equity with debt, traps liquidity in a volatile “lock,” and circumvents logical tax policy.
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