Why banks close accounts
Banks close accounts for commercial, risk and legal reasons. Commercial reasons include the account being unprofitable or the bank exiting a product, customer segment or country. Risk reasons are the most common for businesses: activity that does not match what was declared at opening, payments to or from higher-risk countries, a sector the bank has decided to avoid, such as crypto, gambling, money services or adult content, unexplained cash deposits, or customers and counterparties the bank's screening flags.
Legal and regulatory reasons include failing to respond to a periodic review or 'know your customer' refresh, sanctions screening matches, and concerns the bank may be legally prevented from discussing. Many closures follow an unanswered request for updated documents, which is the easiest kind to avoid.