Yes, you can link TD Ameritrade to your checking account, but the connection works differently than linking two bank accounts
TD Ameritrade (now part of Charles Schwab) lets you move money between your brokerage account and your linked checking account, but it is not a direct connection the way two bank accounts are linked. Instead, you set up what is called an external bank account link — you tell TD Ameritrade which checking account is yours, and then you can transfer money in and out through their system.
The reason for this setup is that TD Ameritrade is a brokerage firm, not a bank. Your checking account is at a bank (or credit union). They are separate institutions, so the link requires you to prove you own both accounts before money can move between them.
Key Takeaways
- You link a checking account to TD Ameritrade by providing your bank's routing number and your account number through the TD Ameritrade website or app.
- TD Ameritrade will make two small test deposits to your checking account to confirm you own it, and you enter those amounts back into TD Ameritrade to complete the link.
- Once linked, you can transfer money from your checking account into TD Ameritrade to buy investments, or move money from TD Ameritrade back to your checking account.
- Transfers typically take one to three business days, not when ready, because the money moves through the banking system rather than between accounts at the same institution.
How to set up the link in TD Ameritrade
Log into your TD Ameritrade account on their website or mobile app. Look for a section called "Accounts" or "Account Settings" — the exact name varies depending on which version you are using. From there, find the option to add an external bank account or link a bank account.
You will be asked to enter your bank's routing number (a nine-digit code that identifies your bank) and your account number (the number of your specific checking account). You can find both on a check, or by logging into your bank's website or calling your bank's customer service line.
After you submit this information, TD Ameritrade will send two small deposits — usually between $0.01 and $0.99 each — to your checking account. This is their way of confirming that the account is actually yours. The deposits show up within a few business days.
Confirming the link with the test deposits
Once the two small deposits appear in your checking account, go back into TD Ameritrade and enter the exact amounts of those deposits. This tells TD Ameritrade that you received the money and confirms you have access to that checking account. After you enter the amounts correctly, the link is active.
The whole process — from submitting your account information to confirming the test deposits — usually takes three to five business days. Some people complete it faster if their bank processes deposits quickly.
What you can do once the account is linked
Once the link is set up, you can transfer money from your checking account into your TD Ameritrade account to buy stocks, bonds, mutual funds, or other investments. You can also move money from your TD Ameritrade account back to your checking account if you sell investments or want to withdraw cash.
These transfers are not when ready. Money typically takes one to three business days to move, because it travels through the banking system rather than moving when ready between accounts at the same place. If you need money quickly, plan ahead.
Why TD Ameritrade does not offer when ready transfers
Banks and brokerages are separate systems. When you transfer money from your checking account to TD Ameritrade, the money does not teleport — it moves through what is called the ACH network (Automated Clearing House), which is the system that handles electronic transfers between different financial institutions. The ACH network processes transfers in batches, which is why it takes multiple business days.
Some newer financial apps offer faster transfers by keeping money in their own system, but TD Ameritrade is a traditional brokerage, so they follow the standard banking timeline.
What happens if you enter the wrong account information
If you accidentally enter the routing number or account number incorrectly, the test deposits will go to the wrong account (or fail to go anywhere). You will not see them in your checking account, so you will not be able to confirm the link. If this happens, contact TD Ameritrade's customer service and ask them to cancel the link and let you try again with the correct information.
Do not guess at the routing number or account number. If you are unsure, call your bank or check a blank check — both will show you the correct numbers.
Linking multiple checking accounts
You can link more than one checking account to the same TD Ameritrade account if you have accounts at different banks or multiple accounts at the same bank. Each one goes through the same process: you provide the routing and account numbers, wait for the test deposits, and confirm the amounts.
This is useful if you want to transfer money from different sources — for example, a personal checking account and a business checking account — into the same brokerage account.
Frequently Asked Questions
Can I transfer money when ready from my checking account to TD Ameritrade?
No. Transfers through the ACH network take one to three business days. If you need to move money faster, some brokerages offer wire transfers, which are quicker but usually cost a fee. Contact TD Ameritrade to ask about wire transfer options.
What if my bank is not showing up when I try to link my account?
Most banks work with TD Ameritrade, but if yours does not appear in their system, you can usually enter the routing number and account number manually instead. If that does not work, call your bank to confirm they support ACH transfers, then contact TD Ameritrade support.
Do I have to keep the linked checking account open forever?
No. You can unlink a checking account at any time through your TD Ameritrade account settings. If you close the checking account at your bank, you should unlink it from TD Ameritrade first to avoid confusion or failed transfers.
Is it safe to give TD Ameritrade my bank account number?
Yes. TD Ameritrade is a regulated brokerage firm, and they use encryption to protect your information. They only use your account number to move money in and out — they cannot withdraw money without your permission through the transfer system.
What if the test deposits do not show up after five business days?
Contact TD Ameritrade support and let them know the deposits have not arrived. They can check on the status or cancel the link so you can try again. Also check with your bank to make sure the deposits did not go to a different account by mistake.