s it a Seo factor to purchase more years for the domain when it is about to expire. Kind of confused if it is a signal to Google that the domain is here to stay and not churn and burn.
Though Matt Cutts once said they limit ranking on new domains for the first few months, purchasing additional years on an established domain has no impact on SEO.
Matt Cutts said: "the difference between a domain that's six months old and one year old is really not that big at all". John Mueller confims it: "That's not what you want to spend your "SEO time" on."