After the expiry, the domain name enters a Grace Period that may last up to 30 to 45 days depending upon the extension and registrar. This is the period when you can renew the domain name at a regular rate without having to pay a penalty (if not auctioned). However, if it still is not renewed during this phase, the domain enters the redemption grace period.

Redemption Grace Period

At the end of the expired period, the domain enters a 30 day redemption period. During this phase, most of the registrars delete all the information about the domain. The domain is then removed thus making it expensive to recover again, it may need to 100-200 USD . Most registrars charge a lump sum during this period to reclaim the domain.

Pending Delete Period

If the domain is still not renewed in redemption period then it goes into the pending delete phase. This period lasts for 5 days, after which the domain gets deleted and is available to public for registration.

Deleted and Active – Renew ASAP

The domain name is deleted and available to anyone for registration. To avoid your domain name from getting deleted, the best thing to do is renew it at the earliest.

For more information https://www.icann.org/resources/pages/gtld-lifecycle-2012-02-25-en