The basic process: what happens when you switch
Switching your business bank account from a traditional bank to a credit union involves three main steps: opening the new account at the credit union, moving your regular deposits and payments over, and closing the old account once everything has transferred. The whole process typically takes two to four weeks, though some parts happen faster than others.
You do not need permission from your current bank to leave, and you do not need to close your old account before opening the new one. In fact, keeping both open for a few weeks while you redirect your cash flow is the safer approach—it gives you time to catch any payments or deposits that slip through the cracks.
The credit union will not move money for you automatically. You control which deposits go where and which payments come from which account. That means the work falls on you to notify customers, vendors, and service providers of your new account details.
Key Takeaways
- You need a business account at the credit union before you can close your old account, and opening one requires your business license, tax ID, and identification for each owner or authorized signer.
- Deposits redirect when ready once you give customers and vendors your new account number, but some payments may continue hitting the old account if you do not update them everywhere.
- Keeping both accounts open for two to four weeks while you transition gives you a safety window to catch missed transfers and confirm everything is working.
- Your old bank will not automatically close your account—you must request closure in writing or by phone once the account is empty and all pending transactions have cleared.
- Recurring payments (payroll, utilities, subscriptions) require individual updates at each vendor or through your accounting software, not a single switch.
Gather the documents the credit union will need
Credit unions require more paperwork than you might expect for a business account. Bring your business license (or articles of incorporation if you are a corporation), your federal Employer Identification Number (EIN) or Social Security Number if you are a sole proprietor, and a government-issued ID for every owner, partner, or person with signing authority on the account.
Some credit unions also ask for a recent business tax return or a letter from the IRS confirming your EIN. If your business is new and has no tax return yet, bring a copy of your business registration with the state and a personal tax return for the owner. Call the credit union ahead of time and ask what they need—requirements vary by location and by the size of your business.
Bring a list of your current business bank account details (the account number and routing number from your old bank). You will not need the old account itself to open the new one, but having the number handy helps if the credit union asks questions about your banking history.
Open the business account at the credit union
Visit the credit union in person or ask whether they offer account opening by phone or video. Some credit unions let you start the process online, but most require at least one in-person visit to verify your identity and signatures. Bring all the documents listed above.
During the meeting, the credit union will ask about your expected monthly deposits and the number of checks you plan to write. This helps them recommend the right account tier and set your initial limits. Be honest about your volume—if you underestimate, you may hit limits quickly and have to upgrade later.
Ask the credit union for a list of their business services: wire transfers, ACH transfers, online banking, mobile deposits, and payroll processing. Not all credit unions offer all of these, and some charge fees for services that your old bank included. Confirm what you need before you commit to the switch.
Once the account is open, the credit union will give you a temporary debit card, checks, and online banking login information. The permanent card and checks usually arrive within five to ten business days. Do not close your old account yet.
Redirect your incoming deposits and payments
Make a list of everyone who sends you money: customers who pay by ACH or check, vendors who owe you refunds, and any other regular deposits. Contact each one and provide your new account number and routing number. Ask them to update their records and confirm the change before the next scheduled payment.
For customers who pay by check, straightforward give them the new account number on your invoices going forward. For ACH payments, you will need to provide both the account number and the routing number. The credit union will give you both when you open the account.
If you use accounting software like QuickBooks or Xero, update your bank connection settings to point to the new credit union account. Most software can handle multiple accounts, so you can keep the old one linked during the transition period and watch both for incoming deposits.
Payments you send out—payroll, vendor invoices, utility bills—require individual updates. Go through your list of recurring payments and update each one separately. This is the most time-consuming part of the switch, but it is also where mistakes happen most often. Set aside an afternoon to work through them systematically.
Update recurring payments and automatic transfers
Payroll is usually the highest priority. If you use a payroll service like ADP, Gusto, or Paychex, log in and update your bank account information in their system. If you process payroll manually, update the account number in your accounting software or with your bank. Test the first payroll run by processing a small amount and confirming it lands in the new account before you run the full payroll.
Utilities, insurance, subscriptions, and loan payments often come out of your business account automatically. Log into each vendor's website or call them directly to update your account information. Some vendors let you change it online; others require a phone call or a form. Keep a checklist as you go so you do not miss any.
If you have a business credit card that pays from your checking account, update the payment method to the new account. If you have a line of credit or loan that draws from your account, contact the lender and provide the new routing and account number.
Do not cancel the old account yet. Wait at least two weeks after you have redirected everything, then review your old account statements to make sure no payments are still coming out of it. If you find a stray payment, update it when ready and wait another week before closing.
Monitor both accounts during the transition period
For the first two to four weeks, check both accounts at least twice a week. Look for deposits that landed in the old account instead of the new one, and payments that came out of the old account when they should have come out of the new one. This is your chance to catch and fix mistakes before they cause real problems.
If you find a deposit in the wrong account, contact the customer or vendor and ask them to resubmit it to the correct account. If a payment came out of the old account by mistake, contact the vendor and ask them to process it again from the new account, then request a refund or credit for the duplicate charge.
Keep a running list of any issues you find and when you resolved them. This helps you spot patterns—for example, if one vendor keeps sending payments to the old account, you may not have updated their records correctly, and you need to contact them again.
Close the old account
Once you have confirmed that no deposits are going to the old account and no payments are coming out of it, contact your old bank and request account closure. Most banks require this in writing or by phone; a few let you close online. Ask whether they need the account to reach a zero balance before they will close it, or whether they can close it with a small balance and refund any remaining funds.
Request written confirmation of the closure. The bank will send you a final statement showing the closing date and any remaining balance. Keep this for your records.
Do not throw away your old checks or debit card right away. Keep them for at least 30 days in case a check you wrote clears after the account is closed. If that happens, the bank will return it unpaid, and you will need to reissue it from the new account. Once 30 days have passed with no issues, shred the old checks and cards.
Frequently Asked Questions
Can I keep my old business account open after I switch to the credit union?
Yes. Many businesses keep their old account open for 30 to 60 days after switching to catch any stray payments or deposits. Once you have confirmed everything has moved over, you can close it. There is no penalty for keeping it open longer, though you may pay a monthly fee if the account sits unused.
What if a customer keeps sending payments to my old account?
Contact them and ask them to update your account information in their system. If they continue sending payments to the old account after you have asked them to stop, contact your old bank and ask them to forward the deposits to your new account. Some banks offer this service for a limited time after closure.
Do I need to update my business license or tax ID when I switch banks?
No. Your business license and tax ID stay the same. You only need to update your bank account information with vendors, customers, and service providers. If you have a business line of credit or loan, contact the lender and provide your new account number so they can continue processing payments.
How long does it take for ACH payments to clear from the new account?
ACH transfers typically take one to three business days to process, the same as they did from your old account. Wire transfers are usually faster—same day or next day. Ask the credit union about their specific timelines when you open the account.
What happens if I close the old account too soon and a payment bounces?
The payment will be returned unpaid, and you may face a returned check fee from the vendor. You will also damage your relationship with that vendor. This is why waiting two to four weeks before closing is important—it gives you time to catch these mistakes while you can still fix them.