Approximately one million undocumented migrants applied for legal status under Spain's regularisation scheme, with the deadline for submissions falling on Tuesday, the final day for applications. Non‑governmental organisations in Spain urged undocumented migrants to register for the process, and the scheme had been expected to attract about 500,000 applicants.

Accounts differ on the total number of applications received. Some reports state that about one million migrants applied, while other reports say Spain received around 900,000 applications for the regularisation scheme.

The Bangkok Post reported that Spain received around 900,000 applications for the regularisation scheme. Al Jazeera reported that Latin Americans accounted for 67 percent of applicants. Globalbankingandfinance.com reported that NGOs stepped up efforts to contact and advise migrants in the final hours before the deadline, that rights groups CEAR and Cepaim urged migrants to submit applications even if they were still waiting for required documents, that around 840,000 people work off the books in Spain, and that it can take more than a year to obtain legal status in Spain. The New York Times reported that Prime Minister Pedro Sánchez presented the citizenship and integration plan in Madrid on Tuesday.