If you've looked at pricing pages for WhatsApp API platforms in India, you've probably noticed the same thing: the number on the homepage is never the number on your invoice. That's not always dishonesty — it's that a WhatsApp API bill has three separate layers, and most pages only show you one of them.
The three layers of your bill
Every WhatsApp Business API bill in India is made of three parts, billed separately:
- Platform subscription — what you pay the software provider (like Bizz2Flow) for the inbox, chatbot builder, and broadcast tools.
- Meta's message charges — what Meta bills per template message you send, regardless of which platform you use.
- BSP markup, if any — some platforms add a percentage on top of Meta's rate as part of how they earn money. Others don't.
The confusion almost always comes from platforms advertising layer one and staying quiet about layers two and three until your first invoice.
What Meta actually charges
Meta bills per delivered template message, split into three categories: marketing, utility, and authentication. Marketing messages (promotions, broadcasts) cost the most per message. Utility and authentication messages (order updates, OTPs) cost a fraction of that, and get cheaper per message as your monthly volume rises — marketing messages get no such volume discount.
Conversations you reply to inside a customer-initiated chat are free today. That's changing — Meta has confirmed that starting later in 2026, replies sent by a human agent inside that window will also become billable, at the same rate as utility messages. If a platform's pricing model depends on that window staying free forever, ask how they plan to handle it.
Why the markup matters more than the subscription fee
A lower subscription fee can still mean a higher total bill if the platform marks up every message you send. At low volume, a 20% markup is invisible — a few rupees. At the volume a growing business actually sends, it compounds fast. Before comparing two platforms by subscription price alone, ask directly: do you mark up Meta's rate, and by how much?
What to actually check before signing up
- Does the pricing page show Meta's charges as a separate line, or only the subscription fee?
- Is there a markup on messages, and is the percentage stated anywhere?
- What happens to your bill once free service replies become billable?
- Is there a setup fee that only appears at checkout?
None of this is complicated once someone actually explains it — which is the point. A platform that hides these numbers isn't protecting a trade secret, it's counting on you not asking.