Zera Company

Free calculator

How much will your company's WhatsApp cost per month?

The WhatsApp API charges per delivered message, and the bill changes with the category and the country of the person who receives it. Pick the currency and the country, enter the volume you send per month and see the cost per category and the total on the spot, using the official Meta rate card. You can adjust every rate. No sign-up: the result is yours, on screen.

Meta charges by the country of the number that receives the message. A country that is not on the list falls in a region, such as "Rest of Latin America", or in "Other countries". See on Meta the list of countries in each region

Promotion, news, re-engagement. Costs more than utility, standard authentication and service.

Order confirmation, alert, reminder. Since October 1, 2026 it is also charged inside the 24-hour window.

Verification code and login. Charged per message.

Free-form replies inside the 24-hour window the customer opens. Since October 1, 2026 they are charged, with 1,000 free per month, per phone number.

Adjust the rates (optional)

The rates already come from the official Meta rate card for the currency and country you picked. Edit them if your account has a different value: a volume discount on utility and authentication, a new Meta table or a partner rate. When you change the currency or the country, the rates go back to the official value.

The free tier of 1,000 service messages applies per phone number, per month. The math assumes the service volume is split evenly across the numbers: unused free messages on one number do not cover another.

Your estimated cost

Enter the message volume per month to see the cost on the spot.

Important: this is an estimate at the list price Meta charges for messages. With ZeraSync you pay Meta directly and Zera adds no markup on top of the message, so the estimate above is your message bill, apart from the platform subscription.

Where each number comes from, no black box

No AI in the math: it is Meta's public pricing multiplied by your volume. Meta publishes the rate card in 16 currencies and 47 markets (39 countries and 8 regions) and charges per delivered message. These are the prices the calculator is using right now:

Category Price per message Note
Marketing $0.0625 no volume discount; free only in the window opened by a click-to-WhatsApp ad
Utility $0.0068 also charged inside the 24h window since October 1, 2026; has volume discount tiers
Authentication $0.0068 verification code and login; has volume discount tiers
Service $0.0068 free-form reply in the 24h window; charged since October 1, 2026, with 1,000 free per month per number

Prices come from the official Meta rate card in USD for the Brazil market, in effect since October 1, 2026 and downloaded from the platform documentation on October 4, 2026. It is the list price: utility and authentication have volume discount tiers, which you apply by editing the rate; marketing and service do not. Meta only updates prices on the first day of each quarter, so check the table before closing a large budget.

Outside this bill: messages from Meta Business Agent, Meta's own AI agent, are charged by usage (tokens) and are not counted here.

Questions about WhatsApp cost

Does WhatsApp charge for every message I send?
On the WhatsApp Business Platform, the WhatsApp API used for automation, bulk sending and system integration, yes: since July 1, 2025 billing is per delivered message, no longer per 24-hour conversation, and it depends on the message category and on the country of the recipient. This calculator covers only that platform.
How much does each message category cost?
On the official Meta rate card, in Brazil a marketing message costs R$0.3217 ($0.0625), and utility, authentication and service messages cost R$0.035 ($0.0068). For another country or currency, pick it in the calculator: the table covers 16 currencies and 47 markets.
How can I pay less on WhatsApp?
Prefer utility over marketing whenever the message allows, because utility costs less. Use the free window: when someone reaches you on a phone (Android or iOS) through a click-to-WhatsApp ad and you reply inside the 24-hour window, Meta does not charge marketing, utility, authentication or service messages while the free entry point window stays open, and, according to the Meta documentation updated on September 30, 2026, it can stay open for up to 7 days. Resolve each conversation in few messages, because service is now charged above 1,000 messages per month, per number. And qualify contacts so you do not spend a message on someone who will not buy.
What changed on October 1, 2026?
Since October 1, 2026 Meta charges the service message (the free-form reply inside the 24-hour window) and also the utility message sent inside that window, at the per-message price of the country. Each business phone number has 1,000 free service messages per month, which do not roll over to the next month. For Solution Providers and directly integrated businesses without a payment method on file, Meta delivers service messages inside the free tier and stops delivering them after it.
Can I calculate in another currency and for another country?
Yes. The calculator uses the official Meta rate card, which has 16 currencies and 47 markets (39 countries and 8 regions). Pick the currency Meta bills your account in and the country of the people who receive the messages. If your account has a different rate, for example a volume discount tier on utility and authentication, edit the value in "Adjust the rates".
Does this cost already include the support platform?
No. This estimate is the list price Meta charges for messages. The platform that organizes support is a separate thing. With ZeraSync, Zera's shared inbox, the subscription is BRL 297 per number per month, with the WhatsApp API included and unlimited agents, and Zera adds no markup on top of the message. So with ZeraSync the calculator's estimate gets no surcharge from Zera.

One screen for the team to answer, with no per-message markup on top

The calculator estimates Meta's bill. ZeraSync is the inbox where your whole team answers the company WhatsApp, on the company number, and you pay Meta directly for messages, with no markup. Unlimited agents, BRL 297 per number, per month, with the WhatsApp API included.