Webster Bank Routing Number - New England Banking Meets CRE Powerhouse

Webster Bank routing number

Webster Bank's routing number is 221970443. The 221 prefix ties to the Federal Reserve Bank of New York, which processes transactions for Connecticut-based institutions. This routing number applies to all Webster personal and commercial checking and savings accounts across Connecticut, New York, Massachusetts, and Rhode Island — and works for ACH transfers, direct deposit, bill payments, and domestic wire transfers. For incoming international wires, the SWIFT code is WABORNUS.

The Sterling Bancorp merger

In January 2022, Webster acquired Sterling Bancorp in a $10.3 billion all-stock deal. Sterling brought a significant New York metro presence and a commercial lending book that nearly doubled Webster's asset base to over $65 billion. Former Sterling customers were migrated to Webster's systems and routing number through mid-2023. If you banked with Sterling before the merger, confirm your current routing number through Webster's online banking portal.

HSA Bank

Webster owns HSA Bank, one of the largest health savings account administrators in the country with over 3.5 million accounts. HSA Bank operates as a division of Webster Bank, N.A. — meaning those HSA accounts are technically Webster deposit accounts sitting on Webster's balance sheet. A software engineer in Seattle with an employer-sponsored HSA may have a Webster Bank account without knowing it. HSA Bank accounts use their own routing numbers for transfers, so if you're moving money from an HSA Bank account specifically, confirm the routing number through your HSA Bank portal rather than assuming it matches 221970443.

Where to find your routing number

Webster's mobile and online banking platforms display your routing number under account details. On checks, it's the nine-digit number in the bottom-left corner. Business clients can access routing details through Webster's commercial banking portal.

How Slash serves businesses that regional banks underserve

Webster is a strong platform for commercial real estate and HSA administration. Businesses outside those verticals often find themselves without the tools they actually need. Slash provides corporate cards with per-employee spend limits, automated receipt capture, and real-time cash flow visibility — financial infrastructure that works whether your business is in Hartford or Houston, without the branch visits or the bank logistics.