Principal March 20, 2025 - By 4idiotz « Back to Glossary Index The original amount of money borrowed or invested.Search the WebRelated Articles:Glossary: RNA (Ribonucleic Acid)Tax Write-Offs For Business Travel ExpensesHow Does the Mortgage Interest Tax Deduction Work?How Do I Use a Mortgage Calculator With Taxes Included?How Do I Compare Mortgage Refinance Rates?« Back to Glossary Index