Answer
120 daysAbout inactive account deletion. To maintain security, limit data retention, and protect the privacy of our users, WhatsApp accounts are generally deleted after 120 days of inactivity.
How to Delete Whatsapp Account
How to Delete WhatsApp Account Permanently
How long does it take for WhatsApp to delete your account?
120 daysAbout inactive account deletion. To maintain security, limit data retention, and protect the privacy of our users, WhatsApp accounts are generally deleted after 120 days of inactivity.