hellotax | 4,208 followers on LinkedIn. Online #VAT registrations and automated VAT calculations, reports and filings for #ecommerce businesses. | hellotax automates VAT calculations, reports & filings for online sellers who want to expand to or within Europe. Founded in 2016, hellotax is an international company with corporate headquarters in Alicante, Spain. Like many businesses, we have started as an interesting idea, a concept maybe worth working out.