# Day Count Basis

## Content

For many of the financial functions, the day count basis is used:

| Basis Number | Day Count Basis |
| ------------ | --------------- |
| 0 (or omitted) | United States of America (NASD) 30/360 |
| 1 | Actual/Actual |
| 2 | Actual/360 |
| 3 | Actual/365 |
| 4 | European 30/360 |

> **Note:** NASD is the National Association of Securities Dealers.