The Tax and Customs Authority has introduced changes to the personal income tax (Imposto sobre o Rendimento de Pessoas Singulares or IRS) return forms for young workers. Starting April 1, those eligible for the Youth IRS (IRS Jovem) must use a new field in Annex A (Anexo A) to opt into the updated tax regime. Young tax-paying residents should ensure they use the correct codes to benefit from the significant tax exemptions available under the new rules.