Definition
Input tax covers the 5% charged by your UAE suppliers and the VAT you self-account for on imports under the reverse charge. Article 54(1) of Federal Decree-Law No. 8 of 2017 allows recovery where the goods or services are used to make taxable supplies, certain supplies made outside the UAE, or other supplies listed in the Executive Regulation.
Article 55(1) adds the evidence and payment tests: hold the tax invoice (or import documents), pay the consideration, and keep electronic invoices where they are required.