Last reviewed 10-31-2026Short-Sale.com Editorialglossary

Fixed Installment

Fannie Mae

Updated 10-31-2026

Fixed Installment

That portion of a mortgage payment that is applied toward principal and interest. When a mortgage negatively amortizes, the fixed installment does not include any amount for principal reduction.

Fannie Mae Glossary of Terms

Fannie Mae · p. 18

California Association of Realtors

Updated 10-31-2026

Fixed Installment

The monthly payment due on a mortgage loan, including payment of both principal and interest.

California Association of Realtors Glossary

California Association of Realtors · p. 6

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