A linked bank account is one you've connected to another financial service so money can move between them automatically
When you link a bank account, you're giving another company or service permission to pull money from it or deposit money into it on your behalf. The link is a direct connection between your bank and that other service—a payment app, a loan servicer, a payroll processor, an investment account, or a bill-pay platform. Once linked, money can flow without you manually entering your account number each time.
The link itself is not a new account. It's authorization. Your bank account stays where it is. What changes is that other places now have the routing number and account number they need to initiate transfers, and your bank has recorded that you've permitted it.
Key Takeaways
- Linking a bank account means giving another service permission to move money in or out of that account automatically.
- The link requires your routing number and account number, which you can find on a check or in your bank's app.
- Linked accounts are used for direct deposit, bill pay, peer transfers, loan payments, and investment deposits.
- You can unlink an account at any time through the service that initiated the link, and the authorization stops immediately.
- Linking is different from sharing your debit card number—the linked account is tied to your actual bank account, not just a card.
How the link gets created
To link a bank account, you typically enter your routing number and account number into the other service's website or app. Your bank's routing number identifies which bank you use; your account number identifies which specific account. Both numbers appear on the bottom left of any check you write, or you can find them in your bank's mobile app under account details.
Some services ask you to verify the link by making two small test deposits (usually under $1 each) into your account, then asking you to confirm the amounts. This proves you actually own the account. Other services skip this step and verify you through your bank's login instead—you sign in to your bank's website while still in the other service's app, and your bank confirms the link without sharing your password.
Once verified, the link is active. You don't have to do anything else. Money can now move between the two accounts whenever the service initiates a transfer or you request one.
What linked accounts are used for
Direct deposit is the most common use. Your employer links to your bank account so paychecks deposit automatically instead of arriving by check. Bill pay uses a linked account so you can authorize payments to utilities, credit cards, or loan servicers without writing checks. Peer-to-peer transfers (apps like Venmo or PayPal) link to your bank so you can send money to friends or withdraw your balance.
Loan payments often require a linked account so the lender can withdraw your monthly payment on a set date. Investment accounts link to your bank so you can deposit money to buy stocks or mutual funds. Savings apps link to your bank to sweep small amounts into savings automatically.
In each case, the link eliminates the need to enter your account number repeatedly or wait for a check to clear. The trade-off is that you're giving that service ongoing access to your account.
The difference between linking and sharing your card number
When you give a merchant your debit card number online or over the phone, you're sharing the card itself—not your bank account. The merchant can charge the card, but they don't have direct access to your account. If something goes wrong, the dispute goes through your card network (Visa, Mastercard, etc.), not your bank.
A linked bank account is different. The service has your actual account number and routing number, which means they can initiate ACH transfers—electronic movements of money directly from your bank account. ACH transfers are cheaper for businesses to process than card charges, which is why many services prefer linked accounts. But it also means the service has a more direct line to your money.
Both are safer than they sound. Your bank and the service are responsible for stopping unauthorized transfers. But the dispute process and timeline differ, which matters if something goes wrong.
Unlinking an account and revoking access
You can unlink an account at any time through the service that initiated the link. Log into the app or website, find the account settings or payment methods section, and look for an option to remove or unlink the account. Once you click it, the authorization stops. The service can no longer pull money from or deposit money into that account.
If you've forgotten which services have your account linked, log into your bank's app and look for a section called "Connected Apps" or "Authorized Services." Most banks show you which third-party services have access and let you revoke permission from there as well. Revoking from your bank's side is faster if you're in a hurry.
Unlinking does not affect any scheduled payments that are already in progress. If you have a bill-pay set to withdraw on the 15th and you unlink on the 10th, the payment may still go through if it was already submitted. Contact the service to cancel the payment if you need to stop it before it processes.
Security and fraud protection for linked accounts
Linked accounts are protected by your bank's fraud monitoring. If an unauthorized transfer occurs, your bank is responsible for investigating and refunding you, usually within 10 business days. The service that initiated the transfer is also liable if they failed to verify your identity or allowed a fraudulent request.
To reduce risk, use strong passwords on any service that has your account linked, enable two-factor authentication if available, and review your bank statements regularly. If you see a transfer you didn't authorize, contact your bank immediately. Do not contact the service first—your bank is the one with the legal obligation to investigate.
Linking your account is generally safer than giving your card number to multiple merchants, because you're limiting access to one service at a time and can revoke it whenever you want. The risk is low if you link only to services you trust and monitor your account.
When linking fails or is refused
Sometimes a link won't go through. Common reasons include entering the wrong routing or account number, having a very new account that the verification system doesn't recognize yet, or your bank blocking the link for security reasons. If this happens, try re-entering your numbers carefully. If it still fails, contact your bank to ask whether they've blocked the service.
Some banks restrict which services can link to your account. Smaller or newer banks may not support certain payment apps. If your bank refuses the link, you may be able to use a different payment method—a debit card, a wire transfer, or a check—instead.
If a service claims they need your account linked but won't accept your bank, that's a red flag. Legitimate services work with most banks. If you're unsure, contact your bank directly to confirm the service is real.
Frequently Asked Questions
Can someone access my entire bank account if they have my routing and account number?
No. Your routing and account number alone don't grant access. They allow ACH transfers to be initiated, but only if you've authorized the service. Your bank verifies that you've given permission before allowing the transfer. If someone has your numbers but you haven't linked your account to them, they can't move money.
What happens if I link my account to a service and it gets hacked?
Your bank is responsible for investigating and refunding unauthorized transfers. Contact your bank as soon as you notice the fraud. You're protected under federal law (Regulation E), which requires your bank to refund you within 10 business days if they confirm the transfer was unauthorized. Unlink the account immediately to stop future transfers.
Do I need to link my account to use a payment app, or can I just add my debit card?
Most payment apps let you choose. You can add your debit card instead of linking your account. Linking is usually faster and cheaper for the app to process, so some apps offer incentives to link. But if you're uncomfortable with it, adding your card is a valid alternative.
If I unlink my account, will my scheduled payments stop?
Payments that have already been submitted may still process even after you unlink. Unlinking only stops future transfers. If you need to cancel a payment that's already scheduled, contact the service directly and ask them to cancel it before the processing date.
Can I link the same bank account to multiple services?
Yes. You can link one account to your employer's payroll system, your utility company, a peer-to-peer app, and an investment account all at the same time. Each service has its own authorization, and you can revoke any of them independently without affecting the others.