Until 30 September

VAT

• Year 2025. Request for refund of the VAT supported: 360,361

• August 2026. Self-assessment 303

• August 2026. Group of companies, individual form: 322

• August 2026. Group of companies, aggregated form: 353

• August 2026. One-stop shop - Import regime: 369

• August 2026. Operations assimilated to imports: 380

• First quarter 2026: Request for reimbursement within the framework of diplomatic, consular and international relations recognized by Spain: 362

• First quarter 2026: request for reimbursement of tax incurred in connection with the North Atlantic Treaty Organization, the International Headquarters of said Organization and the States party to said Treaty: 364

• First quarter 2026: request for reimbursement of tax contributions borne by the armed forces of the Member States of the EU : 381

Environmental Taxes

• July and August 2026. Special tax on non-reusable plastic packaging. Presentation of accounting and inventory record book

Monthly information statement of the operations carried out by businesses or professionals adhering to the collection management system through any type of card and through payments associated with mobile phone numbers

• August 2026: 170

Monthly information return for accounts in all types of financial institutions and annual summary of withholdings and payments on account for income from movable capital and income obtained from consideration derived from accounts in all types of financial institutions

• August 2026: 196