To add a spouse to your bank account, both of you visit the branch together with government-issued photo ID and Social Security numbers, sign a new signature card or account modification form, and let the bank update its records over the next one to three business days. Some institutions now handle the change through authenticated online portals with electronic signatures, but the underlying requirements are the same. Once processed, the account belongs equally to both of you.
Documents Each Spouse Needs to Bring
Federal Customer Identification Program rules require the bank to collect enough information to form a reasonable belief about each account holder’s identity before finalizing the change. At a minimum, each spouse brings:
- A valid government-issued photo ID, such as a driver’s license or U.S. passport.
- A Social Security number. If your spouse does not have an SSN, most institutions accept an Individual Taxpayer Identification Number (ITIN).
- Proof of current residential address if the ID does not show it. Banks typically accept a recent utility bill or lease.
The bank must record each person’s name, date of birth, address, and identification number before the account is updated.1eCFR. 31 CFR 1020.220 – Customer Identification Program Requirements for Banks
If your spouse changed their last name after marriage, bring the marriage certificate so the name on the account matches tax records. The taxpayer identification number on file is what the bank uses to issue Form 1099-INT for interest earned, and a mismatch can trigger backup withholding.2Internal Revenue Service. Instructions for Forms 1099-INT and 1099-OID (01/2024)
The Steps at the Bank
Most banks still require an in-person visit so a representative can witness both signatures on the account modification form. Bring everything on the first trip to avoid coming back.
After the forms are submitted, the bank typically takes one to three business days to update the account title. The original holder keeps full access during that window. Once the change is complete, expect:
- A debit card for each spouse, usually arriving by mail within seven to ten business days.
- New paper checks showing both names, if you order them.
- Updated account disclosures. Federal rules require the bank to send revised disclosures whenever a change in account terms could affect you.3eCFR. 12 CFR Part 1030 – Truth in Savings (Regulation DD)
Read those disclosures. They confirm the modification went through and flag any differences in fees or interest rates that apply now that the account is jointly owned.
What Joint Ownership Actually Means
Adding your spouse is not a minor administrative change. It rewrites the legal relationship between the two of you and the bank.
Equal Access to Every Dollar
Both spouses have equal access to 100 percent of the balance. Either person can withdraw or transfer the entire account without the other’s knowledge or consent. The bank does not care who earned the money or who deposited it. Both names on the account are treated as equal owners.
Right of Survivorship
Most joint bank accounts include a right of survivorship. When one spouse dies, the balance automatically belongs to the surviving spouse, outside of probate and independent of any will.4Consumer Financial Protection Bureau. What Happens if I Have a Joint Bank Account With Someone Who Died? The survivor typically presents a death certificate and the deceased spouse’s name is removed.
Some joint accounts are instead titled as “tenants in common,” in which case each owner can leave their share to someone other than the co-owner. If survivorship is what you want, confirm the account is titled with rights of survivorship before you leave the branch.5FDIC. Financial Institution Employee’s Guide to Deposit Insurance – Joint Accounts
Exposure to Each Other’s Creditors
If one spouse owes a debt and a creditor gets a judgment, the joint account may be garnished. State law controls how much a creditor can take. Some states allow seizure of the full balance; others limit garnishment to the debtor’s presumed share. The non-debtor spouse may have to prove which funds are theirs, which is hard once paychecks and other deposits are commingled.
Shared Liability for Overdrafts
Most deposit agreements make both holders jointly and individually liable for a negative balance. If one spouse overdraws the account, the bank can pursue either of you for the full amount, including overdraft fees. Large institutions commonly charge between $10 and $35 per overdraft, though some banks have reduced or eliminated the fee in recent years.
How Deposit Insurance Changes
Adding your spouse usually increases the total FDIC coverage on the account. The FDIC insures each co-owner of a joint account up to $250,000 for the combined amount of that person’s interests in all joint accounts at the same bank. For a married couple with one joint account, that is up to $500,000 in coverage — $250,000 per spouse.5FDIC. Financial Institution Employee’s Guide to Deposit Insurance – Joint Accounts
At a credit union, the National Credit Union Administration provides the same $250,000 per-owner coverage through the Share Insurance Fund.6National Credit Union Administration. Share Insurance Coverage
If one spouse dies, the FDIC continues to insure the account as if both owners were alive for six months. After that grace period, coverage drops to the single-owner limit of $250,000.5FDIC. Financial Institution Employee’s Guide to Deposit Insurance – Joint Accounts
Tax and Gift Consequences
Who Reports the Interest
Your bank reports interest to the IRS using the taxpayer identification number of the person listed first on the account, and that person receives the Form 1099-INT. If you file jointly, all the interest goes on your return regardless of whose name is first.7Internal Revenue Service. Publication 550 (2024), Investment Income and Expenses
If you file separately, each spouse reports their share of the interest as determined by state law. In community property states, that is typically 50/50. The spouse whose name is first does not have to file a separate nominee 1099-INT to allocate the other spouse’s share; the IRS waives that requirement between spouses.8Internal Revenue Service. Form 1099-INT (Rev. January 2024)
The Gift Tax Question
Giving your spouse an ownership interest in funds that were previously yours alone is technically a gift. For most married couples this creates no tax issue. Federal law provides an unlimited marital deduction, so gifts between U.S. citizen spouses are fully deductible and never subject to gift tax regardless of amount.9Office of the Law Revision Counsel. 26 USC 2523 – Gift to Spouse
The rules change if your spouse is not a U.S. citizen. The unlimited marital deduction does not apply. Instead, gifts to a non-citizen spouse fall under a higher annual exclusion, set at $194,000 for 2026.10Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 If the value of the interest you transfer is above that amount, you’d need to file a gift tax return.
Accounts You Can’t Make Joint
Standard checking accounts, savings accounts, money market accounts, and certificates of deposit can all be jointly owned. Two account types cannot. The IRS does not allow joint ownership of any Individual Retirement Account, though you can name your spouse as beneficiary.11Internal Revenue Service. Topic No. 451, Individual Retirement Arrangements (IRAs) Health Savings Accounts are also individual by law; each spouse must have their own, even if both are covered by the same high-deductible plan, although distributions from one spouse’s HSA can pay the other spouse’s qualified medical expenses.12Internal Revenue Service. Individuals Who Qualify for an HSA
If You Want to Share Access Without Full Joint Ownership
Joint ownership is not the only way to give your spouse a role in the account. Two alternatives cover the most common goals:
- A power of attorney lets your spouse manage the account on your behalf. The funds remain legally yours, and your spouse acts as your agent with a legal duty to use the money in your interest rather than as an equal owner. A POA ends automatically at your death, so it does not provide survivorship.
- A payable-on-death designation names your spouse as beneficiary of your individual account. Your spouse has no access while you are alive but inherits the balance automatically at your death, bypassing probate. You can change or remove the designation any time without your spouse’s consent.
Joint ownership gives immediate access and survivorship but also exposes the account to your spouse’s creditors and to unilateral withdrawals. A POA keeps sole ownership intact but depends on your spouse acting responsibly as your agent. A POD designation transfers cleanly at death but gives no lifetime access. Pick based on whether you actually need shared day-to-day access, a clean transfer at death, or both.