Provided are a curable resin composition for forming an infrared reflective film which is capable of forming the infrared reflective film having an infrared light shielding property without vapor deposition, the infrared reflective film obtained using the same, and a manufacturing method thereof, and an infrared ray cutoff filter having a near infrared light shielding property, and an infrared light shielding property. The curable resin composition for forming the infrared reflective film with a refractive index ranging from 1.65 to 2.00 is coatable with a film thickness of 50 nm to 250 nm, and the curable resin composition for forming the infrared reflective film with a refractive index ranging from 1.20 to 1.45 is coatable with a film thickness of 50 nm to 250 nm.
