Do I need a Facebook Page or Instagram account for WhatsApp Business?

No. WhatsApp says a Facebook Page or Instagram account is not required to create or use a WhatsApp Business account. Link one later if you want a WhatsApp button on it or want to create ads from the app.

• What you do need is a mobile or landline number that you own.
• The WhatsApp Business app is free to download on Android and iPhone.
• Linking adds an optional contact button on your Facebook Page or Instagram Business profile that opens a WhatsApp chat.
• Ads you create in the WhatsApp Business app run from the Facebook Page you have linked.
• You can hide or remove the link at any time.