Business Consulting


Central Servicing Agent (CSA) User Manual

The CSA User Manual has been updated as of October 1, 2018 and is available to view as a PDF below. (The file is large, so it may take a moment to load). Please note, this version is intended to be read electronically, with documents that were previously contained within the Manual now shown as links. Using the links will aid in keeping the information within the Manual up to date.

CSA Hotline







CSA's SBA 504 Frequently Asked Questions Resource Guide

Click here to access the SBA 504 Frequently asked Questions Resource Guide updated by the CSA in May 2016.

CSA's Funding Quick Reference Guide

Click here to access the Funding Quick Reference Guide created by the CSA in May 2016.


Wells Fargo Bank, N.A.
Corporate Trust Services
9062 Old Annapolis Road
Columbia, MD 21045-1951
Attn: 504 Central Servicing Agent

Mailed Checks (Lockbox):
Wells Fargo Corporate Trust Services
NW 6441 P.O. Box 1450 <>
Minneapolis, MN 55485-6441

Checks via overnight courier:
Wells Fargo Corporate Trust Services
Lockbox Services 6441
1801 Parkview Drive, 1st Floor
Shoreview, MN 55126

Other Contact Information

Telephone: 855-572-1637 (opt 1: CTSLink, opt 2: FMLP, opt3: CSA
Fax: 866-707-2390
Email: sba504csa@wellsfargo.com
Website: https://sba504servicing.wellsfargo.com