The short version: You don’t run ads “through” the WhatsApp Business app itself, there’s no ad manager inside it. What you do is build click-to-WhatsApp ads inside Meta Ads Manager, which send people from Facebook or Instagram straight into a chat with your business number. It works well and costs less than most people expect, but only if you can answer fast, because a flood of unread messages will quietly wreck your results.
Where the ads live (this trips everyone up)
I get asked this at least once a month by a client who’s opened WhatsApp Business, poked around the app, and found nothing that looks like “boost this” or “create campaign.” That’s because it isn’t there. WhatsApp Business the app is a messaging tool, not an advertising platform. The ads themselves are built in Meta Ads Manager, the same place you’d build a Facebook or Instagram campaign, and the “destination” you pick determines whether the person clicking your ad ends up on your website, in Messenger, or inside a WhatsApp chat with you.
That last option is called a click-to-WhatsApp ad, and it’s the whole answer to “how do you run ads through WhatsApp Business.” You’re not advertising inside WhatsApp. You’re advertising on Facebook and Instagram and using WhatsApp as the landing point.
What you need in place before you touch Ads Manager
- A verified WhatsApp Business account, set up with your business name, category, and hours. If you haven’t done this bit yet, sort it before anything else, here’s the walkthrough for installing WhatsApp Business on your phone and getting the basics right.
- A Meta Business Manager account with your WhatsApp number connected to it. This is the step people skip and then wonder why the ad objective isn’t showing up.
- A Facebook Page (yes, even if you never post on it). Click-to-WhatsApp ads run through the Facebook and Instagram ad system, so you need a Page attached to your ad account.
- A plan for who answers the messages, and how fast. This matters more than the creative. More on that below because it’s the bit that decides whether this makes you money.
If you’re running this at any real volume, a few dozen leads a day or more, you’ll want the proper business set-up rather than the free app, which means looking at how to set up WhatsApp Business for a small company and eventually the API rather than the consumer app.
The actual steps, in order
1. Open Ads Manager and choose your objective
Pick either “Leads” or “Engagement” as the campaign objective, both let you select WhatsApp as a destination further down. Meta has shuffled these names around a few times over the years, so if it looks slightly different when you log in, don’t panic, the underlying setting is the same: you’re choosing WhatsApp as where the click sends people.
2. Set the destination to WhatsApp
In the ad set, under “conversion location” or “destination,” choose WhatsApp and confirm the phone number you connected in Business Manager. This is the step that turns a normal Facebook or Instagram ad into a click-to-WhatsApp ad.
3. Build the audience
Standard Meta targeting applies here, location, age, interests, custom audiences from your existing customer list, lookalikes if you’ve got enough data. Nothing special about WhatsApp changes how targeting works. I’d start narrower than you think you need to, because the next thing that comes at you is a stream of real people expecting a real reply, not a lead form sitting quietly in a spreadsheet.
4. Write the ad with the message in mind
Your ad copy should set up the conversation, not just sell the product. “Message us for sizing” works better than “Shop now” because it primes the person for what happens after the click. You can also pre-fill a message so the person’s first line to you is already written, which is worth doing, it removes friction and tells you instantly which ad they clicked.
5. Set your budget and let it run for at least three to five days before judging it
Click-to-WhatsApp ads typically cost somewhere between 30p and £1.20 per click in the UK depending on your industry and targeting, cheaper than most lead-form ads I’ve run, because the action (opening a chat) feels lower-effort to the person clicking than filling in a form. I ran a small test for a client, a boutique florist near Guildford, with a £150 weekly budget. It brought in around 170 clicks over the week at roughly 88p each, which turned into 61 actual WhatsApp conversations. Not every click opens a chat, some people tap and back out, so expect a drop-off between clicks and real conversations of anywhere from 20 to 45 percent.
6. Reply fast, or don’t bother running the ads
Here’s the bit that most guides on this topic gloss over. Meta tracks how quickly and consistently you respond to click-to-WhatsApp conversations, and it affects your ad delivery and cost over time, not just your conversion rate. Slow replies don’t just lose the individual customer, they make your future ads more expensive because the algorithm reads a low response rate as a poor experience and shows your ads to fewer people, or shows them less often. With that florist client, we tracked replies for a week: messages answered within five minutes converted to an order about 38 percent of the time. Messages answered after an hour or more converted at under 9 percent. Same ad, same audience, same offer, wildly different result based purely on speed.
The part nobody wants to say out loud
Click-to-WhatsApp ads are easy to set up. Anyone can have one live within twenty minutes of reading this post. The uncomfortable truth is that the setup is the easy 10 percent and the answering is the hard 90 percent, and most small businesses run the ads, get excited about the click volume, and then quietly fail at the follow-through because nobody was assigned to sit and answer WhatsApp messages all day. I’ve seen owners run a campaign, get 80 messages in a weekend, and reply to 20 of them by Monday. The other 60 people have moved on, most of them to a competitor, because WhatsApp trains people to expect a reply within minutes, not days.
If you can’t staff fast replies, don’t run the ads yet. Fix the answering problem first, either with a person whose actual job that hour is, or with automation on the WhatsApp Business API that can handle the first response and hand off the real conversation to a human. This is the point where a lot of businesses need outside help to get the automation and the ad targeting talking to each other, and it’s one of the more common reasons people bring in an AI consultant for small business rather than trying to bolt everything together themselves.
Scaling past the free app
The WhatsApp Business app is fine for low volume, a handful of ads bringing in ten or twenty conversations a day. Past that, you’ll hit a wall, because the app doesn’t support the automation, multiple team logins, or reporting you need once ad-driven volume grows. That’s when businesses move to the WhatsApp Business API, which connects to proper customer service tools, chatbots, and CRM systems, and lets several people answer from one number at once. Before you go there, it’s worth understanding what WhatsApp Business API pricing looks like, because it’s charged per conversation rather than a flat monthly fee, and the costs shift depending on whether the conversation was started by you or by the customer clicking your ad.
You’ll also need to pick a provider to route everything through, since Meta doesn’t let you connect the API directly without one. That decision is worth more thought than people give it, so read through what to look for in a WhatsApp Business solution provider before committing, especially around pricing transparency and how easily they let you export your data if you switch later.
Keeping the leads organised once they come in
A busy click-to-WhatsApp campaign will fill your chat list fast, and if you’re not careful, warm leads get buried under old conversations within a day. Label people as they come in, tag by which ad they clicked if you’re running more than one campaign, and archive resolved chats so your list stays workable. The full method for this is covered in how to organise and manage contacts in WhatsApp Business, and it’s worth doing before you scale ad spend, not after, because retrofitting organisation onto 400 unsorted chats is a miserable afternoon.
If you’re running ads to drive people into a fuller sales flow, catalogue browsing, order tracking, repeat purchase reminders, you’ll eventually want your website talking to WhatsApp directly rather than relying on ad clicks alone. That’s a separate but related project, and the steps for connecting the WhatsApp Business API to your website are worth reading once your ad campaigns are consistently profitable and you’re ready to build the next layer.
What good numbers look like
- Cost per click on click-to-WhatsApp ads in the UK typically runs 30p to £1.20, cheaper in most niches than lead-form ads.
- Expect 55 to 80 percent of clicks to turn into an opened chat, the rest bounce before typing anything.
- Reply within five minutes and you can see conversion rates on warm leads in the 30 to 40 percent range. Reply after an hour and that can fall under 10 percent.
- Once you’re past roughly 30 to 50 conversations a day from ads alone, the free app becomes a bottleneck and it’s worth pricing out the API.
Frequently asked questions
Do I need the WhatsApp Business API to run ads, or does the free app work?
The free WhatsApp Business app works fine for click-to-WhatsApp ads at low volume, you don’t need the API to get started. You only need the API once message volume grows past what one or two people can answer manually, usually somewhere around 30 to 50 conversations a day.
How much do click-to-WhatsApp ads cost compared to normal Facebook ads?
In most UK campaigns I’ve run, click-to-WhatsApp ads come in cheaper per click than standard traffic or lead-form ads, often 30p to £1.20 per click, because opening a chat feels like less commitment to the person clicking than filling in a form.
Can I run WhatsApp ads without a Facebook Page?
No, click-to-WhatsApp ads run through Meta Ads Manager and require a Facebook Page attached to your ad account, even if you never post to it publicly.
Why are my WhatsApp ads getting more expensive over time?
Meta tracks how quickly and consistently you reply to the conversations your ads generate, and slow or inconsistent replies can push up your delivery costs over time. Fixing reply speed usually brings costs back down faster than adjusting the ad itself.
