After the transfer window closed, Transfermarkt compiled the squad building costs for the 20 La Liga teams. Squad building cost refers to the transfer fees spent by a team to assemble its current roster.

Real Madrid spent €909.5 million in transfer fees to build its current squad, the highest in La Liga, followed by Barcelona's €489.5 million. Barcelona's lower spending is partly due to their squad featuring many academy graduates. Málaga spent the least, with their current squad mainly composed of free transfers and loans, totaling only €680,000.

La Liga 20 teams' squad building costs

1–Real Madrid, €909.5 million

2–Barcelona, €489.5 million

3–Atlético Madrid, €477 million

4–Villarreal, €188.5 million

5–Real Betis, €135.5 million

6–Real Sociedad, €90.7 million

7–Athletic Club, €75.88 million

8–Rayo Vallecano, €51.4 million

9–Valencia, €51.05 million

10–Celta de Vigo, €45.8 million

11–Osasuna, €43.9 million

12–Sevilla, €43 million

13–Getafe, €39.8 million

14–Espanyol, €36.8 million

15–Deportivo Alavés, €36.55 million

16–Racing Santander, €29.59 million

17–Deportivo La Coruña, €28.3 million

18–Elche, €25.75 million

19–Levante, €9.5 million

20–Málaga, €680,000

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