Judgment of the Court (First Chamber) of 25 March 2021.#Q-GmbH v Finanzamt Z.#Request for a preliminary ruling from the Bundesfinanzhof.#Reference for a preliminary ruling – Directive 2006/112/EC – Value added tax (VAT) – Exemptions – Article 135(1)(a) – Insurance transactions and related services performed by insurance brokers and insurance agents – Service supplied for an insurer, comprising different services – Categorisation as a single supply.#Case C-907/19.