If your business has a taxable turnover below the sales tax limit, you can still voluntarily register with MTD. HMRC encourages companies with taxable sales below the VAT threshold to register so that they too can benefit from MTD. Businesses can also register for income tax with MTD. This means that, depending on the type of company, you can further optimize your business processes. The software helps you keep track of your business documents and allows you (and your agent, if you have one) to better understand your company’s performance.