IRS 310 is the code for a refund sent by direct deposit to your bank account

When you see 310 on your tax return or in the IRS refund tracking tool, it means the IRS will deposit your refund directly into a bank account you provided. This is not a separate type of refund — it is the delivery method. The IRS uses numbered codes to track how it sends money back to you, and 310 is their code for direct deposit.

Direct deposit is the fastest way to receive a tax refund. The IRS typically deposits the money within 21 days of accepting your return, though many refunds arrive in 5 to 10 business days. You do not have to wait for a check to arrive in the mail, and there is no risk of a check being lost or stolen.

You chose this method when you filed your return. If you provided routing and account numbers on your tax form, the IRS will use those details to send your refund. The money goes directly from the IRS to your bank, and your bank then credits your account.

Key Takeaways

  • Code 310 means your refund is being sent by direct deposit to the bank account number you provided on your tax return.
  • Direct deposit refunds typically arrive within 5 to 10 business days, though the IRS allows up to 21 days.
  • You can track the status of a 310 refund using the IRS Where's My Refund tool on IRS.gov, which updates once per day.
  • If your refund shows 310 but never arrives, contact your bank first to confirm the account number was correct on your return.

How to track a 310 refund status

The IRS Where's My Refund tool is the official way to check on your direct deposit refund. Go to IRS.gov, find the Where's My Refund section, and enter your Social Security number, filing status, and the exact refund amount from your return. The tool updates once per day, usually overnight, so checking multiple times in the same day will not show new information.

The tool will show you one of three statuses: "Return Received" (the IRS has your return but has not finished processing it), "Refund Approved" (the IRS has approved your refund and is preparing to send it), or "Refund Sent" (your refund has been deposited or is on its way). Once it shows "Refund Sent," your bank should receive the deposit within one to two business days, though some banks take longer to post it to your account.

If you filed by mail instead of electronically, processing takes longer. Paper returns can take 4 to 6 weeks to process before the IRS even begins preparing your refund for deposit. Check the Where's My Refund tool after two weeks if you mailed your return.

What to do if your 310 refund does not arrive

If the Where's My Refund tool shows "Refund Sent" but the money has not appeared in your bank account after three business days, contact your bank first. Ask them to confirm that the account number on your tax return matches the account you are checking. A single wrong digit in the routing number or account number will cause the deposit to fail or go to the wrong account.

If your bank confirms the account number is correct and the deposit never arrived, the IRS may have sent the money to a closed account or an account that no longer exists. In that case, the IRS will issue you a check instead, which can take an additional 4 to 6 weeks. You can call the IRS at 1-800-829-1040 to report the problem and ask about the status of a replacement check.

If you filed your return through a tax preparation service and provided your account information to them rather than directly on the tax form, there is a higher risk of error. Some tax services use temporary accounts to collect fees before sending refunds to your real account, and mistakes in this process can delay or misdirect your deposit. Contact the tax service to verify they sent your account information correctly to the IRS.

Other IRS refund delivery codes and how they differ

The IRS uses several codes for different delivery methods. Code 310 is direct deposit. Code 311 is also direct deposit but to a different account than the one you used to pay taxes. Code 312 is a refund applied to next year's estimated taxes instead of sent to you. Code 320 means the IRS is sending a paper check by mail.

If you see code 320 instead of 310, your refund will arrive as a physical check. Paper checks take 7 to 10 business days to arrive after the IRS mails them, though delivery times vary by location. You can cash or deposit a refund check at any bank or check-cashing service.

If you see code 312, the IRS has applied your refund to next year's tax bill instead of sending it to you. This happens when you owe back taxes or have unpaid debts that the IRS has offset against your refund. You can contact the IRS to request a refund instead, though the IRS will not reverse an offset for federal student loans or child support without a court order.

Why the IRS uses code 310 instead of just saying "direct deposit"

The IRS assigns codes to every refund for internal tracking and to help the agency manage the volume of refunds it processes each year. These codes appear in the Where's My Refund tool and on IRS notices so that both the IRS and taxpayers can quickly identify the refund status and delivery method without reading a full description.

The codes also help the IRS identify patterns in refund delivery. If many refunds with code 310 are failing to arrive, the IRS can investigate whether there is a problem with its direct deposit system or with a particular bank. For you, the code is simply a way to confirm that your refund is on its way by direct deposit and not by check or some other method.

Frequently Asked Questions

Can I change my refund from code 310 to a check after I file?

No. Once you file your return with direct deposit information, the IRS will send your refund that way. You cannot change the delivery method after filing. If you want a check instead, you would have to file an amended return, which delays your refund by several weeks.

Does code 310 mean my refund is may provide to arrive?

Code 310 means the IRS intends to send your refund by direct deposit, but it is not may provide if your account information is wrong or your account is closed. If the deposit fails, the IRS will send a check instead, which takes longer.

How long does a 310 refund take if I filed electronically?

The IRS typically deposits direct deposit refunds within 5 to 10 business days of accepting your return, though it allows up to 21 days. If you filed early in the tax season, your refund may arrive faster because the IRS is processing fewer returns.

What if I see code 310 but my bank says it never received the deposit?

Ask your bank to check the routing and account number on file. If those are correct, contact the IRS at 1-800-829-1040 to report the failed deposit. The IRS will investigate and may issue a check to your mailing address instead.

Is code 310 safer than getting a paper check?

Yes. Direct deposit avoids the risk of a check being lost, stolen, or delayed in the mail. The money goes directly from the IRS to your bank, and only you can access it from your account.