WhatsApp stops being free on 1 October: what it costs and what to do this week

Updated 27 September 2026, four days out from the change. If your business serves customers over WhatsApp using Meta's business platform, on 1 October the billing changes: part of what costs you nothing today starts costing money.

First things first: this only affects the WhatsApp Business Platform, the API companies use with connected systems. If you reply from your phone using the WhatsApp app or WhatsApp Business, nothing changes for you.

First, the 24-hour window

To understand the bill you need to understand this rule, which has been around for years and which many people don't discover until it bites them.

When a customer messages you, a 24-hour window opens. Inside it you can reply freely: text, photos, whatever you like. Every new message from the customer resets the clock.

Once that window closes, the freedom ends. Outside the 24 hours, the only thing Meta lets you send is a template they've approved in advance. Try to send a normal message and it won't arrive.

And here's the trap that catches the most businesses: the API tells you the message was accepted. Your dashboard shows green. And the message is never delivered. Appointment reminders nobody receives, alerts stuck in limbo, and not a single error anywhere.

What changes on 1 October

Until now, replying inside that 24-hour window was free. From 1 October 2026 it isn't:

• ·Service messages — the free-form replies you send inside the window — become billable one by one.
• ·Utility templates lose the free status they had inside the window.
• ·The per-message price matches that of utility and authentication templates in each country.
• ·And note: service messages get no volume discounts, unlike templates.

In Spain the utility rate sits at €0.0166 per message, so that's the number to run your figures against. Billing is per delivered message, not per conversation.

A practical warning: as of today, Meta's public developer documentation still says messages inside the window are free. It is out of date. The reliable sources are the email Meta sent to affected accounts and your own billing dashboard — not the documentation site.

You'll see it claimed that there's an allowance of 1,000 free service messages per number per month. Several providers state it as fact, but Meta hasn't published it in its documentation. Until it appears in writing, don't build your figures around it.

One case is spared: conversations starting from a click-to-WhatsApp ad or a Facebook button keep their free 72-hour entry-point window.

What it might actually cost you

It depends on volume, but the maths is easy. Count how many messages your business sends per month replying to customers — not how many conversations, how many messages — and multiply by €0.0166.

• ·500 messages a month: about €8 a month.
• ·2,000 messages a month: about €33 a month.
• ·10,000 messages a month: about €166 a month.

For a small business handling a few dozen queries a month, we're talking a handful of euros. For one handling hundreds of conversations with several messages each, the jump is significant. The difference is how many messages it takes to resolve one query: an assistant that closes in three and one that needs ten are equally useful and cost three times apart.

What to do this week

Four days left. In order of urgency:

• ·Check the account has a payment method. This is the only genuinely urgent one: with no way to charge you, Meta stops delivering your messages. You'll find it in Business Manager, under the billing settings of the WhatsApp Business account.
• ·Look at your real volume. Count the messages you send per month through the API, not the conversations. That's the number that will set your bill.
• ·Check whether you have the 24-hour window hole. Take a reminder you sent to someone who didn't message you that day and ask them if it arrived. Don't check your dashboard: ask the person.
• ·Register templates for everything that goes out beyond the window: reminders, confirmations, alerts. Meta takes time to approve them, so anything you submit now probably won't be live on the 1st.
• ·Review how many messages your assistant burns to resolve one query. That's where the real saving is, and it's the only item here that keeps paying you back every month.

The detail that will make the difference

With per-message billing, how your assistant is written suddenly matters.

A bot that asks one thing at a time — «which service?», «which day?», «what time?», «your name?» — burns four messages where a well-designed one burns a single message. Until now that only cost you the customer's patience. From October it costs you money too.

Same with courtesy confirmations. That «Great! One moment while I check» which adds nothing becomes a billed message.

So Meta's change rewards exactly what already made an assistant better: resolving things in few messages. If yours needs ten to book an appointment, you now have one more reason to fix it.

What doesn't change

A customer messaging you at eleven at night and getting no answer still costs you far more than any Meta rate. A message costs cents; a customer who goes next door doesn't.

This isn't a reason to stop serving customers on WhatsApp. It's a reason to look at how many messages you burn, and to make sure the ones you send outside the window actually arrive.