The Reasons Why We Love Professional VAT Consultants Services Every company, irrespective of the size and sector, is required to pay value-added tax (VAT) on the products and services it supplies. The amount of VAT is based on the standard rate which is set by the government and applied as a percentage of the sale price. While larger businesses often have in-house accountants who are familiar with the process of declaring and paying VAT, for smaller businesses and startups, this can be a daunting task. This is where professional vat consultants come in.