You can renew a gTLD domain name registration anytime prior to its expiration and select up to 9 years registration period.
Post-Expiration Renewal: Within a 40-day Renewal Grace Period following expiration, You can renew your expired domain at the regular renewal price.
For Country Code ccTLD domains:
Every ccTLD domain might have its own Registration Terms and Policies, You should check out individual ccTLD domain pages to learn more information.
Post-Expiration Renewal: Please note that NOT all ccTLD names offer a Renewal Grace Period following expiration; Some need you pay extra fees to renew your expired domain besides the regular renewal price; some will be deleted immediately.