This document discusses VAT (value added tax) considerations for buy-to-let investors in the UK. It notes that VAT can significantly impact projects if not properly budgeted and managed. Residential property sales are typically VAT exempt, while rentals are also usually exempt. However, related costs are treated differently for VAT purposes depending on if the income is subject to a 0% or exempt VAT rate. Common problem areas include properly understanding the scope of VAT relief rules and differences in interpretation with HMRC. The document provides an overview of some of the main VAT reliefs available for refurbishing empty homes or converting non-residential to residential properties.