Real Estate Finance

Principal and Interest (P&I)

The two components of a standard mortgage payment — principal reduces the loan balance; interest is the cost of borrowing.


Definition

Each mortgage payment consists of principal (the portion that reduces the outstanding loan balance) and interest (the charge for using the lender's money). In a fully amortized loan, the total monthly payment stays the same, but the ratio shifts over time: early payments are mostly interest, while later payments are mostly principal. Some loan programs require interest-only payments for an initial period, meaning the principal balance does not decrease during that time.

Full definition locked

Unlock all 100+ glossary definitions, study modules, practice exams, and Carl — your AI tutor.

Start free →

One-time $59 · No subscription

Study Guide

Real Estate Finance

Key concepts and exam tips →

Practice

NY Real Estate Finance

Free sample questions →

Preparing for the NY Real Estate Exam?

Unlocked covers Principal and Interest (P&I) and every other concept on the NY Real Estate Salesperson Exam — with study modules, practice questions, spaced-repetition flashcards, and Carl, your AI tutor.

Browse all terms