WhatsApp Business is a powerful and advanced tool that comes with a paid model. The Business API is a big revenue stream for WhatsApp, and the quality of the service has only improved over the years as more and more companies get involved. There are a few costs associated with the API that any business owner should be considering before making the investment. Here's a quick rundown of the main ones: Monthly costs: To gain access to the API, you'll have to partner up with one of the official WhatsApp providers. There are a number of different providers available, and they range in price quite dramatically. Some charge £75 per month for the service, whereas others ask for close to £500. Set-up cost: Depending on the provider you choose for your Business API, you may have to pay an additional set-up fee. This is usually based on how many numbers you want to add to the network. It's worth noting that just because a provider doesn't charge set-up fees, it doesn't mean that they are going to be the cheapest in the long run. Conversation fee: In the past, WhatsApp charged business users by the number of messages that they sent to colleagues. Now, this fee is calculated per conversation. This is a good change that means users aren't encouraged to squeeze lots of information into a single WhatsApp message.