Spain’s Agencia Tributaria closes the 2024 personal income-tax campaign on Monday, 30 June. The agency will accept filings through its website, by phone and at tax offices until the end of the day, after which all channels will shut for on-time submissions. Madrid expects 24.57 million returns this year, 3.1% more than in 2023. Roughly seven in ten filings are projected to generate refunds. In the first two months of the campaign, the treasury returned €5.516 billion to 7.97 million taxpayers, covering 73.5% of refund requests and 60% of the amounts claimed. Taxpayers who miss Monday’s cut-off face surcharges of 1% of the liability plus an additional 1% for each full month of delay, rising to a 15% flat charge after 12 months. If the agency issues a formal notice, penalties range from 50% to 150% of the outstanding tax. Declarations that would have produced a refund incur fines of €100, rising to €200 once a notice is served.