A joint brokerage account is an investment account owned by two or more people who share the securities inside it and can generally trade, deposit, and withdraw on their own authority. Any owner can buy or sell stocks, bonds, mutual funds, and ETFs held in the account, and every transaction binds everyone on the registration. The ownership form you pick when you open the account decides what happens if one owner dies, how much of the balance a creditor can reach, and how the investment income shows up at tax time. Most major brokerage firms offer these accounts at no extra cost compared to an individual account.
How Ownership Is Structured
The ownership structure is the most consequential choice you make when opening the account. There are four main forms, and they are not interchangeable.
Joint Tenants With Rights of Survivorship
Joint tenancy with rights of survivorship (JTWROS) splits the account equally among the owners. Two owners each hold 50%, three each hold roughly a third, and so on. When one owner dies, that person’s share transfers automatically to the survivors without going through probate. The survivor typically only needs to send the brokerage a death certificate and basic paperwork to take full control.
Tenants in Common
Tenants in common (TIC) lets owners hold unequal shares, such as 70/30. There is no right of survivorship. When one owner dies, that share passes to the deceased owner’s estate and is distributed by their will or, if there is no will, under state inheritance law. This structure gives each owner independent control over what happens to their portion.
Community Property
Community property is available to married couples in Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin. Alaska, South Dakota, and Tennessee let couples opt into community property treatment by written agreement. Assets acquired during the marriage are presumed to be owned equally. When one spouse dies, the survivor keeps their half; the other half passes under the deceased spouse’s will or estate plan.
Tenancy by the Entirety
Tenancy by the entirety is limited to married couples and is not recognized for investment accounts in every state. Where it is available, a creditor of only one spouse generally cannot seize any part of the account. It carries a right of survivorship, so the account moves to the surviving spouse without probate, and neither spouse can sever it alone.
Who Can Trade and Withdraw
Joint brokerage accounts usually run on either-owner authority. Any single owner can place trades, transfer cash to a linked bank account, or rebalance the portfolio without asking anyone else. Some firms will honor a request that certain actions require all owners to sign off, so ask if you want that arrangement built in.
Because either owner can act alone, every trade or withdrawal by one person is legally binding on the whole account. A losing bet by one owner is a loss for both. Trust between co-owners is not optional here.
What Happens When an Owner Dies
Death handling follows the ownership structure. JTWROS, tenancy by the entirety, and the survivor’s half in community property all pass automatically to the surviving owner outside probate. A tenants-in-common share and the deceased spouse’s half of community property flow through the will or state intestacy law.
You can also add a Transfer on Death (TOD) designation, which names beneficiaries who receive the account assets after the last surviving owner dies, bypassing probate.1Investor.gov. Transferring Assets – Section: Transfer on Death (TOD) Registration A TOD designation overrides your will, so keep the two consistent.2FINRA. Plan Now to Smooth the Transfer of Your Brokerage Account Assets on Death
How Taxes Are Reported
At year-end, the brokerage reports all account income under a single primary Social Security number. You may receive Form 1099-B for capital gains and losses, Form 1099-DIV for dividends, and Form 1099-INT for interest, but these forms list only the primary account holder. Both owners are still legally responsible for tax on their own share of the income regardless of whose number appears on the forms.
If co-owners want to report only their portion, the primary account holder files a nominee return. That means issuing a new Form 1099 to each co-owner showing their share, sending those forms to the IRS with Form 1096, and noting the nominee amounts on Schedule B.3Internal Revenue Service. General Instructions for Certain Information Returns (2025) Spouses filing jointly do not need a nominee return, since the income is already on the same return.
Underreporting investment income can trigger a 20% accuracy-related penalty on the underpaid amount when the underpayment results from negligence or a substantial understatement.4Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments
Gift Tax When the Co-Owner Isn’t Your Spouse
Opening a joint brokerage account with a child, sibling, or partner can raise gift tax issues. For a joint brokerage account where either owner can withdraw the full balance, the IRS does not treat your deposit as a gift. A gift happens when the non-contributing owner withdraws funds for their own benefit, and the gift equals whatever they took out with no obligation to repay.5Internal Revenue Service. Instructions for Form 709 That’s different from jointly held real estate, where the gift can occur when ownership is created.
In 2026, you can give any one recipient up to $19,000 a year with no filing requirement.6Internal Revenue Service. What’s New — Estate and Gift Tax If a non-contributing co-owner withdraws more than that in a year for personal use, the contributing owner should file Form 709 for the excess. Filing does not automatically mean tax is owed; it reduces your lifetime exemption, and skipping it can cause trouble later.
Creditor and Divorce Exposure
A creditor of one owner may be able to reach the account, and how much depends on the ownership form and state law.
- Tenants in common: a creditor can generally seize at least the debtor’s share, and in some cases force a sale of the entire account.
- JTWROS: a creditor may reach the debtor’s share. In some states, the non-debtor can protect their portion by proving they contributed most or all of the funds.
- Tenancy by the entirety: where available, a creditor of only one spouse generally cannot touch any part of the account.
- Community property: a creditor of either spouse may be able to reach all or part of the community property, even assets the non-debtor spouse put in.
In a divorce, a joint brokerage account is divisible marital property. Equitable distribution states divide it in a way the court considers fair, which is not always 50/50. Community property states start from an equal split. If a divorce is underway, you can ask the brokerage to freeze the account so neither party can trade or withdraw before the division is settled.
Opening the Account and SIPC Coverage
Every person on the account provides identification and financial information so the firm can meet federal identity verification requirements. Each owner typically supplies a Social Security or taxpayer ID number, a government-issued photo ID, employer information, income and net worth figures, and bank account and routing numbers for funding. Some firms also ask about your investment objectives, risk tolerance, and time horizon.7U.S. Securities and Exchange Commission. Investor Bulletin: How to Open a Brokerage Account
Most brokerages let you complete the application online. One person starts, the other adds their information and signs electronically, and the firm runs a Customer Identification Program check on each applicant.8eCFR. 31 CFR 1023.220 – Customer Identification Programs for Broker-Dealers Approval usually takes a few business days. Vanguard, Fidelity, and Schwab have no minimum to open, though individual mutual funds may set their own.
If the brokerage firm itself fails, the Securities Investor Protection Corporation covers the account up to $500,000, including a $250,000 cash sublimit. A joint account counts as one customer no matter how many people own it, so co-owners share that ceiling.9SIPC. Resources – FAQs A joint account is a separate capacity from your individual accounts, so if you and your spouse each hold individual accounts and share a joint account at the same firm, the joint account gets its own $500,000 in coverage on top of the coverage on each individual account.10Investor.gov. Investor Bulletin: SIPC Protection (Part 1: SIPC Basics) SIPC does not cover normal investment losses.
Removing an Owner
You can take a co-owner off a joint account, but both the remaining and departing owners generally have to consent in writing on a removal form. A two-person account then becomes an individual account. If the account had margin or options privileges, the remaining owner usually has to reapply for them, and any checkwriting has to be re-established. If the removal is because an owner died, the brokerage will want a death certificate and may require a state inheritance tax waiver.
Moving assets out to give one owner their share can create taxable events if investments are sold, so an in-kind transfer of shares may be the better route depending on your situation.