Until January 30th

December 2025. Self-assessment 303
December 2025. Group of companies, individual form: 322
December 2025. Recapitulative return on intra-Community operations: 349
December 2025. Group of companies, aggregated form: 353
December 2025 (or year 2025). Operations assimilated to imports: 380
Fourth quarter 2025. Self-assessment 303
Fourth quarter 2025. Non-periodic tax return-settlement: 309
Fourth quarter 2025. Recapitulative return on intra-Community operations: 349
Fourth quarter 2025. Operations assimilated to imports: 380
Annual summary 2025: 390
Request for refund of fees reimbursed to business travelers in equivalence surcharge: 308
Adjustment of the tax proportions of the settlement periods prior to the start of trading. 318
Refund on compensations in the special regime for agriculture, livestock and fisheries: 341
Option or revocation of the application of the special pro rata for 2026 and subsequent years, if the activity began in the last quarter of 2025: 036

Fourth quarter 2025. Tax on the disposal of waste in landfills, incineration and co-incineration of waste. Self-assessment 593