Supreme court tackles tax battle threatening millions of refunds

Thousands of divorcing parents face a cascade of potential tax refunds after the Supreme Court intervened in a long-standing dispute with the Spanish Tax Agency. The court’s recent ruling raises fundamental questions about the tax treatment of shared custody and alimony, setting the stage for a significant shift in family tax law.

A critical question: simultaneous deductions?

At the heart of the matter is whether parents with shared custody can simultaneously claim the child benefit and the special alimony regime – a combination previously rejected by the Tax Agency but increasingly recognized by regional courts. This divergence has now prompted the Supreme Court to issue a definitive ruling, potentially impacting millions of families.

The child benefit, a recognized tax credit for raising children, offers escalating amounts: €2,400 for the first child, €2,700 for the second, €4,000 for the third, and €4,500 for subsequent children. These figures are often supplemented by regional authorities, adding further financial relief. However, the compatibility of these benefits is now being fiercely debated.

Alimony: a tax advantage

Furthermore, alimony payments – stipends ordered by the courts – are treated as a separate deduction from income tax, a significant advantage for families with higher incomes. Yet, when parents share custody and are obligated to pay alimony, the situation becomes complex. Current regulations don’t explicitly address this overlap, leading to conflicting interpretations by the Tax Agency and the Central Tax Economic Court (TEAC) – both previously rejecting the combined benefit.

Last year, the Superior Courts of Justice in Extremadura, Catalonia, Andalusia, and Valencia acknowledged the compatibility of both benefits, arguing that denying the 50% child benefit to parents with shared custody who also pay alimony is unwarranted. The Madrid Supreme Court sided with a taxpayer in a recent case, prompting the Supreme Court to rule the matter requires a broad legal interpretation.

The resulting judgment could trigger retroactive refunds for the last four tax years – a substantial sum for affected families. The Spanish Tax Agency is even preparing a €700 allowance for new parents in 2026, a move that, while offering some relief, doesn’t fully address the systemic issues highlighted by the Supreme Court’s intervention. It’s a band-aid solution to a problem demanding a more fundamental overhaul of tax regulations.