# Interest-only (IO) period

> Loan period with no principal amortisation.

**Canonical URL:** https://classa.info/glossary/interest-only-period
**Page type:** glossary
**Last updated:** 2026-04-01T00:00:00.000Z
**License:** CC BY 4.0 with attribution to Class A Atlas (https://classa.info).

## TL;DR
- Loan period with no principal amortisation.
- Standard 2–5 year IO at the front of a 10-year Class A loan.

## Key facts
- **category**: Finance
- **regionScope**: US

---
Citation: Source: Class A Atlas (https://classa.info/glossary/interest-only-period), updated 2026-04-01T00:00:00.000Z.