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About Arch MI

Arch MI is a leading provider of mortgage insurance (MI) in the United States. Backed by a solid capital base, we offer expert risk management and financial services to help mortgage lenders protect their investments and expand their origination opportunities. We employ more than 800 professionals and support staff at our headquarters in Greensboro, North Carolina, and in locations throughout the country. An industry-leading sales force with deep relationships gives us unparalleled insight into market challenges, coupled with the maturity and experience to offer solutions.

Mortgage insurance, or simply "MI," helps people buy a house with only a modest down payment. This is because MI protects lenders against the increased risk of borrower default related to mortgages with high loan-to-value (LTV) ratios.

Products and Services

Arch MI provides an array of products and services, including first-lien mortgage guaranty insurance in a range of premium payment plans. The combination of our risk-focused underwriting platform and extensive loan performance data means we can offer solutions backed by superior analytics to support our customers’ needs. Our competitive pricing tool, Arch MI RateStar®, is the leading risk-based pricing model in the industry, providing rates based on a thorough understanding of the underlying risk.

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Arch MI is a subsidiary of Arch Capital Group Ltd.
Arch Capital Group Announces Closing of Acquisition of United Guaranty Corporation

Our Platforms

  • Our U.S. Operations – Our U.S. mortgage insurance companies provide mortgage guaranty insurance on conventional first-lien mortgages for residential property.
  • Our international Operations – Arch MI also provides credit risk management solutions globally for high-LTV residential lending. Our offices in Bermuda, Europe, Hong Kong and the United States provide superior customer service and risk management support. For additional information, please visit our international website at

Our Companies

  • Arch Mortgage Insurance Company — mortgage guaranty insurance on conventional first mortgages for residential property.
  • Arch Mortgage Guaranty Company — mortgage guaranty insurance products for portfolio loans and unconventional loans that do not meet traditional guidelines.
  • United Guaranty Residential Insurance Company — mortgage guaranty insurance on conventional first mortgages for residential property.
  • United Guaranty Services, Inc., DBA Arch Fulfillment Services — contract underwriting, customer billing and underwriting operations to support affiliate companies of Arch MI.

Arch Mortgage Insurance Company
230 N. Elm St.
Greensboro, NC, 27401