The consumer protection association Deco Proteste warns that recent reductions in monthly tax withholdings (retenções na fonte) may lead to smaller refunds or unexpected tax bills for many taxpayers when filing their annual income tax (Imposto sobre o Rendimento das Pessoas Singulares or IRS) returns. The association notes that lower monthly deductions do not equate to a lower total tax burden, potentially causing financial adjustments for households in 2027.
Deco Proteste warns of potential IRS tax surprises
Monday, 14 September 2026AI summary
Context & Explainers
Deco Proteste is Portugal's largest consumer rights organization, providing independent product testing, legal advice, dispute mediation, and advocacy on behalf of consumers. It is part of the international Euroconsumers group.
Deco publishes comparative tests of products and services (from insurance policies to supermarket prices), lobbies for consumer-friendly legislation, and runs a mediation service that helps resolve disputes between consumers and companies. It also operates helplines during crises — such as severe weather events — to advise on insurance claims, billing disputes, and emergency consumer rights.
Membership is paid, but Deco's public advocacy and media presence make it a significant voice in Portuguese consumer affairs. Its studies and reports are frequently cited in news coverage of cost-of-living, energy prices, and financial products.
