Every domain has an annual fee which is due to the Domain Registrar. Some domain registrars allow for a domain to be renewed for multiple years at a time, while others allow just a single year renewal on each anniversary on initial domain registration.
Think of it like the license disk on the windscreen of your car. Except that when you fail to renew your domain, your website and emails no longer work as they are suspended by the Registrar. Imagine if this happened to your car, and you couldn’t start your car the day after your license disk expired?
Your domain renewal anniversary date is critical, and domain renewal fees need to be paid in full in advance by SA Domains to the applicable Registrar, so remember, this is one invoice you cannot forget to pay, or push out till next month!!