Which banking institutions does SeamlessChex support? Evan Albert August 10, 2020 14:58 Updated SeamlessChex supports all U.S. banks. A U.S. business checking account is required. Related articles What is the difference between eChecks vs. ACH? Do I need to print and deposit checks myself? How do I connect my bank account? For SeamlessChex, how long will it take to receive my funds? Can I check if my customer has sufficient funds before depositing? Comments 0 comments Please sign in to leave a comment.