
Who writes mortgage guaranty in Idaho
From the Idaho company list; alphabetical, since Idaho doesn't publish every company's premium by line.
19 insurers are licensed for mortgage guaranty in Idaho on the regulator's list. Essent Group wrote the most in 2025 (25.9% of the state's premium).
By Sam Alishahi, independent insurance broker · All lines in Idaho
The companies
| Company | NAIC | Home state | Status here | Lines |
|---|---|---|---|---|
| Allstate North American Insurance Company | 11110 | IL | Admitted (licensed) | Fidelity bonds, General liability, Mortgage guaranty +4 more |
| Anza Mortgage Insurance Corporation | 10287 | NC | Admitted (licensed) | Mortgage guaranty |
| ARCH Mortgage Assurance Company | 29114 | WI | Admitted (licensed) | Mortgage guaranty |
| Arch Mortgage Guaranty Company | 18732 | WI | Admitted (licensed) | Mortgage guaranty |
| Arch Mortgage Insurance Company | 40266 | WI | Admitted (licensed) | Mortgage guaranty |
| Enact Mortgage Insurance Corporation | 38458 | NC | Admitted (licensed) | Mortgage guaranty |
| Enact Mortgage Insurance Corporation of North Carolina | 16675 | NC | Admitted (licensed) | Mortgage guaranty |
| Essent Guaranty, Inc. | 13634 | PA | Admitted (licensed) | Mortgage guaranty |
| MGIC Indemnity Corporation | 18740 | WI | Admitted (licensed) | Mortgage guaranty |
| Mortgage Guaranty Insurance Corporation | 29858 | WI | Admitted (licensed) | Mortgage guaranty |
| National Mortgage Insurance Corporation | 13695 | WI | Admitted (licensed) | Mortgage guaranty |
| PMI Mortgage Insurance Company | 27251 | AZ | Admitted (licensed) | Mortgage guaranty |
| Poseidon Mortgage Guaranty Company | 40525 | NC | Admitted (licensed) | Mortgage guaranty |
| Radian Guaranty, Inc. | 33790 | PA | Admitted (licensed) | Mortgage guaranty |
| Radian Mortgage Assurance Inc. | 30872 | PA | Admitted (licensed) | Mortgage guaranty |
| Republic Mortgage Assurance Company | 28452 | NC | Admitted (licensed) | Mortgage guaranty |
| Republic Mortgage Assurance Company | 32174 | NC | Admitted (licensed) | Mortgage guaranty |
| Republic Mortgage Guaranty Insurance Corporation | 31275 | NC | Admitted (licensed) | Mortgage guaranty |
| United Guaranty Residential Insurance Company | 15873 | NC | Admitted (licensed) | Mortgage guaranty |
Method and source
Source: the Idaho insurance regulator company list, read 2026-10-18 and the surplus lines list. Admitted = every company licensed in Idaho per the DOI 2024 Annual Report roster (pp. 42-76), all four sections kept with 'type' = Health / Life & Annuity / Property & Casualty / Title so the merge can filter; 'since' = IDAHO LICENSE DATE; 'lines' = LINE(S) OF BUSINESS split on ';' (duplicates removed). Counts by type: {'Health': 23, 'Life & Annuity': 419, 'Property & Casualty': 870, 'Title': 18}. Domicile 'Canada' mapped to CN; one row (80659) has no domicile printed. Companies withdrawn in 2024 (report p.35) are not in the roster. Surplus = SLA of Idaho eligible list: no domicile or eligibility date on the page; alien insurers carry an AA- import code in 'import_code' and naic '' (two AA- rows are labelled Foreign on the page but flagged alien here); DECLO ASSURANCE CORPORATION shows code 'ID 4862' (not a NAIC code). "Premium" is direct premium written in the state for the year shown; "share" is that company's part of the state total for the line. A company can be licensed for a line and write none of it, and a surplus lines insurer can write a line without a state license for it.
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