# Profile Types

Each profile has a **Type**. The type decides how the profile is used.

<table id="bkmrk-typeused-forwhere-it"><thead><tr><th>Type</th><th>Used for</th><th>Where it can be selected</th></tr></thead><tbody><tr><td>**Prepaid**</td><td>Normal packages, paid before use. Each activation adds one period and the profile's quota.</td><td>User form, Change Profile, cards, user portal.</td></tr><tr><td>**Postpaid**</td><td>Packages billed after use. SAS Radius creates an unpaid invoice before the user's expiration date.</td><td>User form.</td></tr><tr><td>**Fair Usage Policy (FUP)**</td><td>A reduced service users are moved to automatically: when they expire, use up their quota, or reach a daily limit. Not sold directly.</td><td>Only as *Expired Next Profile*, *Quota Next Profile* or *Daily Limit Next Profile* of another profile.</td></tr><tr><td>**Extension**</td><td>Add-on packages that add days, traffic or uptime without changing the user's package (for example "Free 2 days" or "Extra 10 GB").</td><td>Users → Extend Service, and the user portal.</td></tr></tbody></table>

## How they work together

- A user is always on a **Prepaid** or **Postpaid** profile.
- When the user expires or runs out of quota, SAS Radius gives the user the settings of the linked **FUP** profile (speed, pool) at the next connection. The user's profile in the panel does not change, so the next activation restores the normal service automatically. Online users on an FUP profile show the purple **FUP** status.
- **Extension** profiles add to the current subscription.

Guides: [Setting Up Expired Users](https://help.snono-systems.com/books/sas-radius/page/setting-up-expired-users), [Setting Up FUP (Fair Usage)](https://help.snono-systems.com/books/sas-radius/page/setting-up-fup-fair-usage), [Extension Packages](https://help.snono-systems.com/books/sas-radius/page/extension-packages).