In 2026, Disney+ requires your birthdate primarily for legal compliance and advertising personalization. By collecting your age, Disney confirms you meet the minimum age requirement (18) to manage a billing relationship. Furthermore, with the growth of their ad-supported tiers, this demographic data is essential for targeted advertising, ensuring that the ads shown are relevant to your age group. For profiles used by minors, the birthdate is used to trigger Parental Controls and "Junior Mode," which restricts access to mature content based on the rating system you've selected. While you can choose "Prefer not to say" for gender, the birthdate is mandatory for account verification. Disney asserts that this data is handled according to their global Privacy Policy and is not used to block you from specific content unless parental locks are explicitly enabled.