Private Banking: Benefits, Limits, and Costs

The first thing a private bank offers is attention: one named person who returns your call the same afternoon, knows your late husband’s trust by its name, and can arrange a mortgage, a credit line and a custody account before the week is out. When you have just inherited the administrative weight of a substantial estate, that consolidation can feel like relief, and much of it is genuinely useful.

It is also a commercial arrangement, and the costliest parts rarely appear on the first page. This guide sets out what a private bank or wealth division provides, where its interests part from yours, how a loan against your portfolio can become a forced sale, and which protections cover which accounts. By the end you should be able to decide how much of your financial life to place with one institution, and on what written terms. If the relationship was your husband’s, you need not inherit it unchanged.

What the relationship actually contains

Set aside the quiet rooms and engraved stationery, and a private-banking relationship is a bundle of distinct services, often supplied by distinct legal entities under one name:

• A relationship manager, your usual single point of contact.
• Custody, the safekeeping of your securities and the record of what you own.
• Trust services, with the bank as trustee, co-trustee, or agent for a trustee.
• Mortgages and other credit, sometimes priced by the assets you keep there.
• Lending against your portfolio, usually a securities-backed line of credit.
• Deposits and cash management, including the sweep for uninvested cash.

Each carries its own agreement, fee and protection. Ask which company sits on the other side of each: the bank, a broker-dealer or advisory affiliate, or an outside lender. FINRA notes that many brokerage firms lend against securities through a bank affiliate, so whoever suggested the loan may not be your point of contact for it.

Build a one-page entity map before moving money. For every account, write the legal account owner, the legal entity providing the service, the custodian or depository, the registration or insurance regime, the fee schedule, and the person authorized to give instructions. A shared brand and login do not turn separate companies into one legal counterparty.

The relationship manager works for the bank

Your relationship manager may be excellent. But the role exists to deepen the relationship, and revenue grows with each product you add. An SEC staff bulletin on conflicts of interest, issued in August 2022, lists common sources of conflict, among them pay that varies with the product sold or account recommended, pay tied to assets under management, and quotas, bonuses and sales contests. None of this proves a recommendation wrong. It tells you to ask how the person across the table is paid when you say yes.

The legal standard depends on which hat is being worn. The bulletin explains that an investment adviser’s fiduciary duty generally applies to the whole advisory relationship, while Regulation Best Interest governs a broker-dealer when it makes a recommendation. It is staff guidance, not an SEC rule, and says expressly that it has no legal force or effect. Use it as a conflict checklist, not as a substitute for the governing agreement or law. Our guide to how your adviser is actually paid shows how to find the answer in Form CRS and Form ADV. Investor.gov’s Form CRS page lets you retrieve the firm’s relationship summary and compare services, fees, conflicts, disciplinary history and standard of conduct.

The courtesy is genuine, and so is the revenue model beneath it.

Where the conflicts sit

Three sources deserve particular attention.

Proprietary products. When the bank or an affiliate manages, issues or sponsors a fund, note or strategy, it may earn fees beyond what you pay for advice. The SEC staff bulletin says the facts worth disclosing include whether the firm limits recommendations to proprietary products, and whether its professionals earn extra pay, carry quotas or qualify for bonuses by selling them.

Revenue sharing. Outside fund companies may pay the firm revenue-sharing, sub-accounting or administrative-services fees, which the bulletin names as conflicts. They seldom appear on your statement as a line of their own.

Your cash. The bulletin also lists compensation connected with cash sweep programs. Uninvested cash is not neutral ground; the firm can be paid through it.

When the bank is also your trustee, the question sharpens. Whether it may invest trust assets in its own or an affiliate’s funds depends on the trust instrument and governing law, and state trust law varies. Ask for the governing provision, the conflict disclosure, every layer of compensation and any fee offset in writing. A trustee’s authority to use an affiliated fund does not by itself answer whether doing so is prudent for this trust.

Cash is a product too

An SEC investor bulletin published in May 2025 explains that many firms enroll clients in a default cash sweep, often a bank sweep, and that bank sweep programs often pay less interest than money market fund sweeps. Rates and terms vary significantly. A broker-dealer must give you 30 days’ written notice of changes to its sweep program’s terms or products, and you may move your cash even if you were enrolled by default.

If the account carries an asset-based advisory fee, the bulletin adds, holding cash inside it can increase the fee. Suppose $2 million of life-insurance proceeds rests in a default sweep for a year while you decide. If an available alternative yields one percentage point more, the gross difference is $20,000 for that year before taxes, fees or rate changes. That is an illustration, not a promised return. Ask for the current annual percentage yield, whether it floats, the firm’s compensation, the advisory fee charged on cash, and the dollar difference at your balance before concluding that waiting costs nothing.

Borrowing against your portfolio

A securities-backed line of credit lets you borrow against your investments without selling them. FINRA notes that it may let you avoid realizing capital gains and keep receiving dividends, at rates often below those on personal loans. To buy a smaller home before the family house sells, it can be a sensible bridge.

Now the mechanics. According to FINRA, a typical agreement lets you borrow 50 to 95 percent of the account’s value, depending on the holdings; the rate usually floats at prime or SOFR plus a spread; and proceeds cannot buy securities. If collateral falls short, a maintenance call requires more collateral or repayment within a specified period, typically two or three days. Otherwise the firm can sell your securities, and lenders often may do so without notice. These are demand loans, callable at any time, and the lender may declare a holding ineligible or raise its collateral requirement. Forced sales can generate capital-gains tax, and moving to another firm usually means repaying the line first.

A hypothetical collateral call

Suppose a bank will lend 60 percent of a $3,000,000 portfolio, a lending value of $1,800,000, and you draw $1,500,000. Assume, for simplicity, that every holding keeps the same 60 percent advance rate and that it also governs maintenance. If the portfolio falls 25 percent, to $2,250,000, the lending value drops to $1,350,000: a $150,000 shortfall. Paying the debt down by selling pledged securities would require about $375,000 of sales, because each dollar sold repays one dollar of debt but also removes 60 cents of lending value. Real agreements can change advance rates or eligibility, so require the bank to run its own stress test at 10, 20, 30 and 40 percent market declines and identify what it may sell first. Concentration makes the arithmetic harsher.

The 2015 joint SEC and FINRA investor alert on these loans names the incentive: in a fee-based account, the firm keeps earning its fee on the full portfolio and may also earn revenue on the loan. The alert suggests borrowing less than the maximum offered, and FINRA’s 2024 guide repeats the advice. It may be the most useful sentence in either document.

Two protections, often confused

FDIC deposit insurance and SIPC protection answer different failures.

FDIC insurance covers deposits, including certificates of deposit. The standard amount is $250,000 per depositor, per insured bank, for each ownership category, such as single, joint, certain retirement and trust accounts. Under rules in effect since April 1, 2024, a trust owner’s deposits at one bank are insured up to $250,000 per eligible beneficiary, to a maximum of $1,250,000 per owner when five or more eligible beneficiaries are named. The FDIC does not insure stocks, bonds, mutual funds, annuities, life-insurance policies or safe deposit box contents, even at an insured bank.

For six months after an account owner’s death, the FDIC generally insures the deceased owner’s accounts as if the owner were still alive, a grace period that matters for joint and trust accounts you held with your husband. Coverage does not change during those months unless authorized people restructure the accounts, and the FDIC will not apply the grace period where it would reduce coverage. The exception is easy to miss: there is no six-month grace period when a named beneficiary (not an owner)dies, so trust or payable-on-death coverage may change immediately.

Deposits placed at a bank through a broker are added to your own deposits there in the same ownership category. If a sweep lands cash at the affiliated bank where you keep a large checking balance, the two can count against one limit. Our guide to deposit protection for large balances works through the categories.

SIPC is narrower in what it covers, though its headline dollar limit is higher. When a SIPC-member brokerage firm fails and customer assets are missing, it protects up to $500,000, including a $250,000 limit for cash held in connection with buying or selling securities. It covers only the custody function, not market losses, poor advice or unsuitable investments. Money market mutual funds are protected by SIPC as securities; they are not FDIC-insured. The limit is applied by “separate capacity,” not simply by account number: accounts held in the same capacity are combined, while an individual account, joint account, IRA, estate account and qualifying trust account are examples of different capacities. Confirm the actual titles before assuming several accounts create several limits.

Negotiating and documenting the fees

A published fee schedule is where a conversation begins, not necessarily where it ends. Nothing requires a bank to lower its price, and nothing prevents you from asking, comparing or moving. Negotiate from the full picture: advisory, trustee and fund fees, loan spreads, sweep economics and transaction charges.

Ask for one annual figure in dollars, not a scatter of percentages. On $4 million, a 0.75 percent advisory fee is $30,000 a year before underlying-fund expenses, trustee fees, transaction costs, loan interest or the earnings a low-yield sweep gives up. Ask whether proprietary fund expenses sit on top of the advisory fee or are credited against it, whether cash and pledged assets bear the full fee, and whether loan or mortgage pricing depends on keeping a stated sum at the bank. Record the agreed terms in a signed fee letter or amendment, filed with the account agreements. Before moving every account under one roof, read our guide to consolidating accounts without losing protection.

Set a review date before signing. At least annually (and sooner after a death, trustee change, large loan draw or sweep-program notice)reconcile the promised price with statements, test deposit and brokerage protection using current account titles, and ask whether any affiliate compensation or collateral terms changed. Convenience has value; it should still survive a written comparison.

Questions to put to a private bank before you sign

1. Which legal entity holds each account, and does FDIC insurance, SIPC protection or neither apply?
2. How is my relationship manager paid, and does that pay change with the products I choose?
3. Which recommendations are proprietary, and what do you or your affiliates earn from each?
4. Do you receive revenue sharing or other payments from fund companies on my holdings?
5. What does my cash sweep pay, what are the alternatives, and what does the firm earn on my cash?
6. For a credit line, what advance rate applies to each holding, how long would I have to meet a maintenance call, and may you sell without notice?
7. As trustee, may you invest trust assets in your own funds, and are those fees credited against the trustee fee?
8. What is my total annual cost in dollars, and will you confirm it in a signed fee letter?

This article provides general U.S. educational information and is not legal, tax, investment, lending, or trust advice. Confirm current rules with the FDIC, SIPC, the SEC and FINRA, and review any agreement with a qualified professional who knows your facts.