In this article 10 sections
- What is a private mortgage banker?
- What are the four seats, and what does each one decide?
- What does the accountant decide, and how does it affect the mortgage?
- What does the wealth manager decide, and does anything have to move?
- What does the attorney decide, and why does the lender care?
- Where does the private mortgage banker sit, and what does it not do?
- How do the four seats work together on a purchase?
- What should each advisor ask the mortgage banker?
- How does an advisor bring the fourth seat in?
- When should the fourth seat stay empty?
- Questions, answered plainly
What is a private mortgage banker?
A private mortgage banker is a licensed mortgage lender that underwrites and funds a private client's residential financing directly and works alongside the client's existing advisors rather than replacing any of them. The word banker refers to the lending function, not to deposits: Mbanc Private Client Lending is the $1,000,000-minimum desk of Mortgage Bank of California Inc. dba Mbanc (NMLS #38232), a direct mortgage bank that takes no deposits, takes no custody of assets and does not manage money.
The distinction matters because the people who already advise a seven- or eight-figure earner tend to have clear lanes, and the mortgage is often the one decision with no one in the lane. The CPA sees the tax effect, the wealth manager sees the liquidity effect, the attorney sees the title and liability effect. Someone still has to answer the lending question: on what reading of this client's income, at what loan amount and in what structure will a lender actually fund? That is the fourth seat. For the full map of jumbo financing that sits behind it, see the jumbo loan guide.
What are the four seats, and what does each one decide?
Each seat owns one category of decision, and a purchase goes best when no seat makes another seat's call. Exhibit 1 sets out the division.
| Seat | Decides | What the mortgage banker needs from this seat |
|---|---|---|
| Accountant (CPA) | How income is reported and taxed; how the mortgage interest deduction applies | Clarity on how income is earned and documented; where the standard 50% factor understates the business, a written expense ratio from a CPA, EA or tax preparer (10% floor) or a third-party-prepared profit and loss statement |
| Wealth manager | Which assets fund the down payment and closing; how the portfolio stays allocated | Statements for the accounts that will show eligible assets and reserves |
| Attorney | How title is held (individual, revocable trust, LLC); contract terms; estate and liability structure | The vesting decision early enough to underwrite to it |
| Private mortgage banker | Whether and how the loan can be funded: program, loan amount, LTV, reserves, structure | A 15-minute conversation with the client: occupancy, state, loan amount and how they are paid |
Source: Mbanc Private Client Lending, four-seat model. Mbanc finances; it does not advise, invest, manage money or prepare returns.
The rest of this piece takes each seat in turn, then shows how the four coordinate on a single purchase.
What does the accountant decide, and how does it affect the mortgage?
The accountant decides how income is reported, and that decision usually determines whether a tax-return mortgage will work. A CPA who has lawfully minimized taxable income has done the job well, and a lender reading the return will see less income as a result. We call that the write-off paradox.
A private mortgage banker removes the conflict by not reading the return. The Founder Loan reads 12 or 24 months of deposits, multiplying business deposits by the owner's share (25% minimum) and applying a standard 50% expense factor, or a lower ratio a CPA, EA or tax preparer verifies in writing, down to a 10% floor. The Operator Loan qualifies a 1099 earner on 90% of gross receipts. Neither asks the CPA to change anything already filed. What the CPA can usefully supply is documentation: a written expense ratio or a third-party-prepared profit and loss statement, an explanation of unusual deposits, or confirmation of ownership percentage. The accountant's role is set out in detail in the CPA's guide to jumbo mortgages without tax returns.
On tax treatment, the desk's position is fixed: the mortgage interest deduction is limited to interest on up to $750,000 of acquisition debt ($375,000 married filing separately), and the One Big Beautiful Bill Act kept that limit in place. Your CPA, not your lender, decides how this applies to you.
What does the wealth manager decide, and does anything have to move?
The wealth manager decides which assets fund the purchase and how the rest of the portfolio stays invested, and nothing has to move to the lender. Mbanc has no asset-under-management or net-worth minimum and requires no liquidation, custody or deposits. That is the core difference from a lender that offers balance-sheet credit as an accommodation to assets held in its own custody.
The wealth manager's real question is usually how much has to come out of the portfolio, and how much has to stay liquid afterwards. The asset-based AR Loan answers it in one calculation.
Worked example
A client with credit above 720 plans a primary-residence purchase with a $2,250,000 loan amount. The client holds a taxable brokerage account and retirement accounts.
- Eligible assets, for a client over 59 1/2: brokerage and retirement each counted at the share of its balance the investor guideline for the file applies: $4,800,000 and $1,600,000 in this illustration. Total $6,400,000.
- Funds to close: the down payment plus closing costs.
- Reserves: loan amount above $1,500,000, so 9 months of PITIA (principal, interest, taxes, insurance and association dues), which must remain liquid after closing.
- Monthly qualifying income: ($6,400,000 minus the funds to close minus the reserves) / 84 = about $64,887. The remainder clears the guideline's $1,000,000 minimum.
- At the 50% DTI maximum, that supports up to about $32,443 of total monthly obligations, comfortably above the housing payment.
The wealth manager decides where the funds to close come from and keeps the 9 months of PITIA liquid. The remaining portfolio is documented, not sold, and stays where it is.
The program detail is on the AR Loan page. The wealth manager's side of a client purchase is covered in financing a home without liquidating your portfolio, and interest-only planning questions in why sophisticated borrowers choose interest-only.
What does the attorney decide, and why does the lender care?
The attorney decides how title is held, and vesting is a financing input as well as a legal one. Investment property often closes in an LLC, partnership or corporation formed to hold real estate, with at most four members and two layers; members holding at least 25% cumulative ownership apply, and every applying member signs a personal guaranty or the Note. Entities may never hold title to a primary residence or second home. Trust vesting is limited to revocable trusts; irrevocable trusts, land trusts and IRAs are not eligible. An attorney who plans to deed a primary residence into an irrevocable trust at closing needs to know that before the contract is signed, not after.
The attorney also shapes the contract timeline, the operating agreement behind the guaranty on an investment file, and in a divorce the buyout that one spouse may need to finance. These are legal decisions and the desk does not make them; it tells the attorney what each choice means for the loan.
Where does the private mortgage banker sit, and what does it not do?
The private mortgage banker sits beside the other three and finances what they have decided. Its outputs are specific: which of four programs fits, what loan amount and LTV the guideline allows, how many months of reserves must stay liquid, whether interest-only fits, and the terms in writing before anything is signed.
What the seat does not do is as important. Mbanc does not give investment, tax or legal advice, does not manage money, does not prepare returns and does not hold assets. When a client asks the banker whether to sell a position, the answer is that the wealth manager decides. When the question is whether interest is deductible, the CPA decides. Mayer Dallal, who runs the desk, reads every inquiry and takes the first call himself, which keeps that discipline consistent.
Most private clients have never had this seat filled. Preferred retail banking underwrites the mortgage on tax returns like any salaried borrower's, and balance-sheet lending at a wealth-management private bank typically comes attached to an asset relationship. The fourth seat at Mbanc Private Client Lending lends on the profile, not on the deposit.
How do the four seats work together on a purchase?
The four seats work best in sequence, with the mortgage banker brought in before an offer rather than after. Exhibit 2 shows the order that avoids rework.
| Stage | Lead seat | The mortgage banker's input |
|---|---|---|
| 1. Before searching | Client and mortgage banker | 15-minute call: program fit, indicative loan amount, LTV ceiling, reserves. For a buyer, appraisal, title and any condo review are completed once under contract |
| 2. Funding plan | Wealth manager | Funds to close and months of reserves that must stay liquid |
| 3. Income documentation | Accountant | Document list for the program; whether a documented expense ratio helps |
| 4. Vesting and contract | Attorney | Eligible vesting (individual, revocable trust, or LLC for investment); timeline for appraisal and title |
| 5. Terms | Mortgage banker | Written terms before anything is signed, including whether a prepayment penalty applies |
| 6. Closing | All four | One banker owns the file to closing; recent complete files have closed in about 15 days, not a commitment |
Source: Mbanc Private Client Lending process as of October 2026. Timing depends on appraisal, title and file completeness.
Illustrative composite
A business owner buying a second home asked the wealth manager to fund the down payment from a brokerage account. The CPA flagged that the sale would realize a large gain. The attorney wanted the property titled in the client's revocable trust. Brought in at stage one, the desk confirmed the file worked on the Founder Loan using 24 months of business statements, and that title in a revocable trust was eligible. The wealth manager then chose to fund the down payment from cash the client already held, leaving the brokerage position untouched. Each advisor made their own decision; the financing was built around all three.
Illustrative composite based on the kinds of files the desk sees. Details changed. Not a specific client.
What should each advisor ask the mortgage banker?
Each advisor should ask the question that protects their own decision from being undone by the financing. The useful questions are short and specific:
- The accountant: Which income documents will be read, and does anything already filed need to change? On the Founder, Operator and AR programs the answer to the second part is no, because no tax return is read.
- The wealth manager: Exactly how much must come out of the portfolio to close, and how many months of PITIA must remain liquid afterwards? The banker should give a dollar figure for both.
- The attorney: Is the intended vesting eligible, and when does the lender need the final structure? Revocable trusts and, for investment property, LLCs with every applying member on the guaranty are eligible; irrevocable trusts are not.
- All three: If interest-only is proposed, what are the payments before and after the interest-only period, and was the client qualified on the fully amortizing payment? Both answers should be in writing up front.
A banker who cannot answer these in plain numbers on the first call is not yet ready to sit at the table.
How does an advisor bring the fourth seat in?
An advisor calls Mayer directly at (844) 405-1935 or submits the scenario on the site with the Referred by field completed, and receives a scenario answer within one business day. Advisors who refer regularly can use a personal link at mbancprivatelending.com/?ref=. The client's first step is the same 15-minute call as anyone's, with no application and no credit pull.
No referral fee or anything of value passes in either direction. RESPA Section 8 (12 U.S.C. 2607) prohibits fees for referring settlement services, and the desk applies that line without exception. The advisor's benefit is a client who gets a direct answer quickly.
When should the fourth seat stay empty?
When the client does not need a loan, or when a conventional lender reads the client accurately. Some clients will rationally pay cash. A salaried client whose W-2s describe their income well will often do better with a conventional jumbo, and the desk will say so. Loans under $1,000,000 belong on the core Mbanc desk at (844) 918-1886, and credit below 680 sits outside this desk.
The seat also stays empty on the questions that belong elsewhere. A private mortgage banker who starts advising on allocation, tax or estate structure has left its seat, and a good advisory team should notice. The value of the four-seat model is that each professional does one job fully.
Sources
Loan amounts, credit scores, loan-to-value ratios, reserves and other figures in this article are indicative eligibility ranges as of the date shown. They are not an offer of credit or a commitment to lend. All loans are subject to underwriting approval, property eligibility, and the guideline in effect at the time of application. Programs, terms and availability change without notice. Close times quoted reflect recent experience on complete files and are not a commitment. Interest-only payments increase when amortization begins. Whether a prepayment penalty applies is disclosed in writing before anything is signed.
Eligibility figures as of 4 November 2026.