Nitpick: not for businesses. If you're asking for a certificate for anything that they may suspect has slight relation to any commercial activity, the request will be denied. It may be accepted by chance, but that's unreliable.
Companies who don't want to pay currently have only single option - WoSign, and they had started to give out free certificates relatively recently (I heard of them only this February)
> Class 1 certificates are limited to client and server certificates, whereas the later is restricted in its usage for non-commercial purpose only. Subscribers MUST upgrade to Class 2 or higher level for any domain and site of commercial nature, when using high-profile brands and names or if involved in obtaining or relaying sensitive information such as health records, financial details, personal information etc.
StartSSL will make you pay to revoke a certificate if you need to.
if it's an empty site then you're ok.