Kaantha maintained its consistent box office performance on Sunday, accumulating ₹9.35 crore over its first two days. On Day 3, the film generated ₹4.50 crore across all languages, indicating stable growth for the weekend. The three-day net collection in India is as follows: Friday: ₹4.35 crore (Tamil: ₹2.65 crore, Telugu: ₹1.7 crore); Saturday: ₹5 crore (Tamil: ₹3.4 crore, Telugu: ₹1.6 crore); Sunday: ₹4.5 crore (Tamil: ₹3.1 crore, Telugu: ₹1.4 crore). The total India net collection for three days stands at ₹13.85 crore, with Tamil contributing ₹9.15 crore and Telugu ₹4.7 crore.
The state-wise gross collection over three days is as follows: Karnataka: ₹1.55 crore, AP–Telangana: ₹4.55 crore, Tamil Nadu: ₹6.6 crore, Kerala: ₹3.2 crore, and the Rest of India: ₹0.4 crore. The total gross for India amounts to ₹16.3 crore. Regarding worldwide earnings for three days, the India net totals ₹13.85 crore, the India gross is ₹16.30 crore, overseas collections are at ₹7.50 crore, bringing the worldwide total to ₹23.80 crore. Directed by Selvamani Selvaraj, Kaantha is produced by Spirit Media and Wayfarer Films, featuring Dulquer Salmaan, Bhagyashri Borse, Rana Daggubati, Samuthirakani, and Bijesh Nagesh.