WhatsApp Business API Updates 2026

This guide covers changes to WhatsApp pricing, messaging limits and account setup affecting Singapore businesses. Each section identifies the change and what to check with your provider.

If you're still figuring out whether you need the API at all, start with our WhatsApp Business App vs API comparison. This article assumes you're already on the API or planning to move.

The pricing model changed completely

In July 2025, Meta replaced conversation-based billing with per-message pricing. Under the earlier model, the charge covered a conversation window.

Now you pay per template message sent. The rates depend on the message category and your country.

For Singapore businesses, the current rates look like this:

• Utility messages (appointment confirmations, order updates, reminders): S$0.0205 per message
• Marketing messages (promotions, re-engagement, offers): S$0.0937 per message
• Service window replies (when a customer messages you first): free within 24 hours until October 1, 2026, now S$0.0205 per message after the first 1,000 each month for each business phone number
• Utility templates inside the service window: free until October 1, 2026, now charged per message

In April 2026, Meta added eight new billing currencies, including SGD. Then on July 1, Singapore moved out of regional pricing and onto its own rate card, with higher utility and authentication rates. You can now see your WhatsApp costs in Singapore dollars instead of converting from USD.

For an illustration, 500 utility messages at S$0.0205 each would total S$10.25 before other fees or taxes. Use the current rate card and your actual usage for a budget.

If you're heavily into marketing broadcasts, you'll pay more per message. But you also save money when your old conversations used to run long. Under the old model, a customer who replied to your promo and chatted for an hour cost the same as one who ignored it. Now you pay for the template, and since October 1, 2026, you pay for the replies too.

Check that each template’s category matches its purpose and customer context. Our template guide explains the distinctions to review.

October 1, 2026: customer replies became billable

Meta's latest pricing change took effect on October 1, 2026. The messages your team and third-party AI send inside an open 24-hour customer service window now carry per-message charges.

• Non-template service replies from staff or third-party AI are charged per message.
• Utility templates inside the 24-hour window are also charged per message.
• The 72-hour free entry window remains free for eligible message delivery when a customer enters through a qualifying ad or Page call-to-action in the WhatsApp mobile app and the business replies within 24 hours.

As of 21 August 2026, Meta says service messages will use the same market rate as utility and authentication messages, without volume discounts. The final rates taking effect on October 1 are due by September 1. Read our October service-message pricing guide for the charge and free-message breakdown, or check Meta's official pricing update.

Check whether your provider adds markup

chatavocado passes Meta’s message fees through without markup. Your monthly plan is separate.

Ask whether your provider adds a margin to the newly billable messages as well as its monthly fee.

Compare the provider’s per-message rate with the applicable Meta rate. Our zero-markup guide explains the invoice check.

Verified businesses now get 100K daily messages instantly

Messaging limits affect how many customers a business can contact. Check the limit shown for your account before planning a campaign.

The new system is simpler. Complete Meta's Business Verification process and you jump straight to 100,000 messages per day. No waiting period. No gradual scaling. Meta started rolling this out in early 2026.

Meta also introduced portfolio pacing for large campaigns. If you blast 50,000 marketing messages at once, Meta may batch the delivery and pause if quality signals drop (spam reports, blocks). It's their way of protecting both you and the platform. Your messages still go out, just not all in the first 30 seconds.

Confirm the available limit in your account rather than assuming a new number can send your full campaign immediately.

Meta banned general-purpose AI chatbots

Meta began enforcing a policy on AI assistants on 15 January 2026.

Meta banned open-ended AI assistants. Think "ChatGPT on WhatsApp," bots that can talk about anything, not just your business.

Business-specific bots are still fine. Support, bookings, FAQs, order tracking, customer service for your actual business. The distinction is about intent and scope. Your bot needs to stay on-topic and do something specific for your business.

"Answer questions about my services and book appointments" is fine. "Be a helpful AI assistant that can do anything" is not.

Ask your provider to review the assistant’s intended use against the current requirements. The AI assistant guide describes examples of business-specific tasks.

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The On-Premises API is gone

The on-premises deployment option, where your BSP hosted the API infrastructure on their own servers, expired in October 2025. Cloud API is the only option now.

Ask your provider which API infrastructure your number uses and whether any migration work remains.

For businesses still on the WhatsApp Business App considering the move to the API, there's only one path now: Cloud API through a BSP or direct through Meta. Our migration guide walks through every step.

WhatsApp usernames are coming

Usernames aren't live yet, but they're coming. And the technical change behind them will affect how your systems identify customers.

Starting June 2026, WhatsApp is testing usernames in select countries. Users can set a username, and their phone numbers may no longer be visible to businesses they message. The test group is limited initially and Singapore is not in the first wave.

The technical change behind this is a new identifier called BSUID (business-scoped user ID). Instead of identifying a customer by their phone number, each customer gets a unique ID that's specific to your business.

If your customer records use phone numbers as identifiers, ask how the provider plans to handle BSUID alongside them.

Include that question when reviewing an integration or renewing the provider contract.

Max-price bidding for marketing messages

Meta announced an auction system for marketing message delivery, with a limited beta planned for mid-2026 and open beta expected in October.

The idea: you set the maximum price you're willing to pay per marketing message. Meta optimises delivery within your budget, prioritising recipients who are more likely to engage. Early testers report savings of around 25% on large campaigns.

Check availability and suitability for your account before planning around the feature.

What Singapore businesses should do right now

Use these checks when reviewing the account with your provider:

1. Count the messages that become billable on October 1. Pull your service reply and in-window utility template volume now. When Meta publishes the final rate in September, you can calculate the real impact before the first invoice arrives.
2. Confirm which API infrastructure your number uses and whether migration work remains.
3. Compare the bill with the applicable rate card, categories and provider charges.
4. If your AI chatbot can go off-topic, fix it. Scope it down to your business functions. Bookings, FAQs, order status, customer support. Keep it specific.
5. Business Verification. If you haven't done it yet, start now. It unlocks the 100K daily message limit, and it takes a few days plus some business documents.
6. Ask how the provider plans to support BSUID in connected customer records.
7. Review whether each template’s category fits its purpose. See the template guide before changing it.

Frequently asked questions

Did WhatsApp Business API pricing change in 2026?

Yes. Singapore moved to its own rate card in July 2026, with higher utility and authentication rates. Since October 1, 2026, Meta also charges per message for service replies and utility templates sent inside the 24-hour customer service window.

Does chatavocado mark up WhatsApp message fees?

No. chatavocado passes Meta's published message rates through at cost. That applies to marketing, utility, authentication, and the service message fees that started on October 1, 2026. You pay Meta's rate with zero markup from us.

Are AI chatbots still allowed on WhatsApp Business API?

Business-specific chatbots are still allowed. What Meta banned in January 2026 is general-purpose AI assistants. If your bot handles bookings, FAQs, order updates, or customer support for your business, it complies with the new rules.

What is BSUID on WhatsApp?

BSUID stands for business-scoped user ID. It's a new customer identifier that WhatsApp is rolling out alongside usernames. Each customer gets a unique ID per business, replacing phone numbers as the primary way to identify users.

How much does the WhatsApp Business API cost in Singapore?

Meta charges per delivered message based on its category and the recipient's market. Since October 1, 2026, Meta also charges per message for service replies and utility templates inside the 24-hour window. You may also pay your platform provider a subscription fee and markup.

Is the WhatsApp On-Premises API still available?

No. The final on-premises API version expired in October 2025. All businesses must use the Cloud API. Performance is better with the Cloud API, with 99.9% uptime and significantly lower infrastructure costs.

Review the changes that affect your setup

Ask your provider which listed changes affect your numbers, messages or connected records, and who will handle any required work.

Talk to our AI about your business.