A cash guarantee mortgage — more often called a pledged asset mortgage — lets you buy a home with little or no down payment by pledging liquid assets like cash, Treasury securities, or certificates of deposit as extra collateral for the loan. Instead of liquidating investments to put 20% down, you deposit qualifying assets into a segregated account the lender controls, and those funds stand in for the equity a traditional down payment would create. The loan ends up with a high loan-to-value ratio on paper, but the lender treats the risk as if you had made a full down payment.
How the Pledged Collateral Works
You open a collateral account at or through the lender, fund it with qualifying assets, and the lender places a lien on those assets. The deposit typically covers the gap between your actual down payment and a 20% equity position, which is the point at which lenders normally require private mortgage insurance.1Consumer Financial Protection Bureau. Homeowners Protection Act (PMI Cancellation Act) Procedures
On a $500,000 home with 10% down, you already have $50,000 in equity, so the lender needs another $50,000 in the collateral account to reach an 80% loan-to-value threshold. Put only 5% down on the same home and the gap widens to $75,000.
A collateral pledge agreement spells out when and how the lender can access the funds. You keep legal ownership of the pledged assets until a default occurs. A third party, such as a parent, can fund the account on the borrower’s behalf, which is a common arrangement for adult children buying a first home with family help.
Because the lender holds both the property and a pool of liquid collateral, the risk drops significantly compared to a standard high-LTV loan. That’s the reason a borrower can often negotiate a lower interest rate and skip mortgage insurance entirely.
What Counts as Acceptable Collateral
Lenders want assets they can convert to cash quickly and predictably. The following are typically accepted at full face value:
- Cash held in savings or checking accounts at the lending institution
- U.S. Treasury bills, notes, and bonds
- Fully vested certificates of deposit, typically at the same bank issuing the mortgage
- Money market funds
Marketable securities like publicly traded stocks, ETFs, and mutual funds are sometimes accepted, but the lender applies a “haircut” to their value to account for price swings. A lender might credit only 50% to 70% of a stock portfolio’s current market value toward the collateral requirement, so $100,000 in stock might satisfy only $50,000 to $70,000 of the obligation.
Seasoning requirements also apply. The funds usually must have been in the account for 60 to 90 days, which prevents borrowers from using a short-term loan to fake liquid wealth.
Why Borrowers Use It
The most direct payoff is skipping mortgage insurance. Private mortgage insurance on a conventional loan above 80% LTV typically runs 0.46% to 1.50% of the loan amount per year. On a $400,000 mortgage that’s roughly $1,840 to $6,000 annually, and it protects the lender rather than you.
Under the Homeowners Protection Act, you can request PMI cancellation once your balance reaches 80% of the home’s original value, and the servicer must terminate it automatically at 78%.2Federal Deposit Insurance Corporation. V-5 Homeowners Protection Act Reaching that point takes years of payments. A pledged asset structure lets you avoid PMI from the first payment.
The gap against an FHA loan is wider. FHA loans carry a 1.75% upfront mortgage insurance premium plus annual premiums of 0.45% to 1.05% depending on term, amount, and LTV.3U.S. Department of Housing and Urban Development. Mortgagee Letter 15-01 – FHA Mortgage Insurance Premiums On a $400,000 FHA loan the upfront premium alone is $7,000, and the annual premium usually stays for the life of the loan.
The tax angle can matter even more. Selling appreciated investments to fund a large down payment triggers capital gains tax. Federal long-term capital gains rates are 15% for most filers and rise to 20% once taxable income exceeds $545,500 for single filers or $613,700 for married couples filing jointly in 2026.4Internal Revenue Service. Topic No. 409, Capital Gains and Losses High earners may also owe the 3.8% net investment income tax, pushing the combined federal rate as high as 23.8%.5Internal Revenue Service. Net Investment Income Tax Pledging assets instead of selling them postpones that tax event. You keep your positions, they continue to earn dividends or appreciate, and no gain is realized. On $100,000 of unrealized gains, the difference between selling now at 23.8% and holding can easily exceed $20,000.
When a parent or other third party pledges their own assets, the funds stay their property. Because no transfer of ownership occurs, the arrangement generally falls outside the definition of a taxable gift. The annual gift tax exclusion for 2026 is $19,000 per recipient, but that only matters if assets actually change hands.6Internal Revenue Service. Revenue Procedure 2025-32 – Inflation Adjusted Items for 2026
What You Can Do With the Account While It’s Pledged
The pledge restricts your control but doesn’t erase it. Interest and dividends earned on the pledged assets generally belong to you and are paid into your account. That income is taxable to you in the year it’s credited, whether you can withdraw it or not.
Investment options are limited. Lenders typically confine you to low-risk instruments like money market accounts, internal CDs, or Treasury securities. Where a brokerage account holds the collateral, some trading may be permitted, including covered options strategies and rebalancing between eligible asset classes, but margin trading is off-limits.7Schwab Bank. Pledged Asset Line Frequently Asked Questions
You can sometimes swap one asset for another of equal or greater value, but only with the lender’s written consent. You’ll need to document the value, ownership, and marketability of the replacement, and the lender can reject the swap if it doesn’t meet their standards.
The Risks
This is where borrowers most often underestimate the downside. A pledged asset mortgage exposes you on two fronts. Default on the loan and the lender can foreclose on the property and liquidate the pledged collateral to cover the balance. You can lose both the home and the portfolio.
If the collateral is marketable securities and their value drops, the lender can demand additional funds or assets to restore the required collateral level, which functions like a margin call. The loan value of the pledged assets must equal or exceed the outstanding loan obligation at all times.7Schwab Bank. Pledged Asset Line Frequently Asked Questions If you can’t meet the call quickly, the lender can sell assets from the account at its discretion, potentially locking in losses at the worst possible time. Some lenders try to notify you first, but they aren’t always required to.
A third-party guarantor has the same exposure. A parent who pledges $80,000 for a child’s mortgage can see those assets sold if the child defaults or if the securities lose value. The obligation is legally enforceable, not a symbolic gesture.
Opportunity cost is real too. While the assets are pledged, you can’t borrow against them, liquidate them for an emergency, or move them to another brokerage. They stay yours on paper, but your ability to act on them is frozen for years.
Getting Your Collateral Back
The pledge doesn’t last forever. The lender releases the assets once your loan-to-value ratio drops below the threshold specified in the agreement, most commonly 80%. That reduction can happen through regular monthly payments chipping away at principal, or through an increase in the property’s appraised value.
To trigger the release based on appreciation, you submit a formal request and pay for a new certified appraisal. If the appraisal shows the loan balance is 80% or less of fair market value, the lender is obligated to terminate the pledge and return the funds. For borrowers who just make payments on schedule, the loan eventually amortizes below the 80% mark on its own, and the release becomes routine, though it still requires a formal request.
Who It Makes Sense For
The math tends to favor a pledged asset mortgage when three things line up: you hold a concentrated portfolio with large unrealized gains, you’re in a high enough tax bracket that selling would be expensive, and you plan to keep the home long enough that the avoided insurance premiums and any rate savings add up. Someone sitting on $200,000 of appreciated stock facing a combined 23.8% rate could save more than $25,000 in taxes by pledging rather than selling.
Standard underwriting still applies. Lenders check credit score, debt-to-income ratio, and employment history the way they would for any conventional mortgage, and many set the credit bar higher than the 620 conventional minimum because the product is aimed at borrowers with substantial liquid wealth, not borrowers stretching to qualify. Back-end DTI generally can’t exceed roughly 43% to 45%.
The product makes less sense if your liquid assets are mostly cash earning minimal returns, because locking them up carries real opportunity cost with little tax benefit to offset it. It gets riskier if the collateral is volatile stock that could trigger a call during a downturn, forcing you to add funds at the worst moment.
Availability is limited. Pledged asset mortgages are primarily offered by private banks, the wealth management arms of large banks, and brokerage firms with affiliated lending. A local credit union or online mortgage lender probably doesn’t offer one. Expect the lender to require a broader financial relationship, whether an investment account, a minimum asset level, or both, as a condition of participation.