How to Run Facebook Ads: Step by Step Guide 2026

Somewhere around the middle of 2024, a narrative started circulating: Facebook is finished, everyone moved to TikTok and Instagram, why bother advertising on a platform your parents use. The narrative stuck. Marketers repeated it. Budget shifted elsewhere.

Then something interesting happened. Businesses that stayed on Facebook quietly cleaned up. CPCs dropped because competitors left. Audience Network placements got cheaper. And Meta kept pouring billions into its ad algorithm, which made no distinction between Facebook and Instagram in the first place. The brands that stuck around enjoyed lower acquisition costs while everyone else fought over inflated TikTok CPMs.

Facebook still reaches over 44 million monthly active users in the UK and 190 million in the US. The demographics have shifted, yes. The under-25 crowd gravitates towards Reels and TikTok. But adults aged 30-65 with purchasing power and decision-making authority? They scroll Facebook daily. For estate agents, solicitors, B2B SaaS companies, healthcare providers, and e-commerce brands targeting homeowners or parents, this platform remains the most cost-effective paid social channel available.

This guide covers the full process of running Facebook ads through Meta Ads Manager in 2026, written for UK and US businesses. No fluff, no recycled advice from 2021. Every recommendation reflects the current Andromeda algorithm, Advantage+ features, and post-iOS privacy landscape.

Before You Start: Account Setup

You cannot run Facebook ads from a personal profile. Before touching Ads Manager, three components need to be in place. Skip any of these and you will run into problems within the first week.

Facebook Business Page

This is the public face of your business on Facebook. Ads are served through the page, and users who see your ad can click through to it. The page does not need thousands of followers to run effective ads, but it should be complete: profile photo (logo), cover image, business hours, contact information, and a clear description of what you do. An incomplete page reduces trust and can lower your ad quality score.

Meta Business Manager

Set up at business. facebook.com. Business Manager is the central hub where you manage ad accounts, Pages, Pixels, and team permissions. It separates your personal Facebook activity from your business operations. If you work with an agency or have multiple team members, Business Manager lets you assign granular access levels without sharing login credentials. You can manage multiple ad accounts and Pages under a single Business Manager, which is essential for agencies or multi-brand businesses.

Meta Pixel Installation

The Pixel is a snippet of JavaScript that sits on your website and reports visitor behaviour back to Meta. Page views, add-to-cart events, form submissions, purchases. Without it, Meta cannot track conversions, which means the algorithm cannot optimise your campaigns. Install the Pixel before launching any campaign, not after.

The easiest installation method is through Google Tag Manager. GTM lets you manage the Meta Pixel, Google Ads tags, and other tracking scripts from one interface without touching your website code every time. WordPress users can alternatively use the PixelYourSite plugin or Meta’s own integration.

Where Your Ads Actually Appear

When people say “Facebook ads,” they mean Meta ads. A campaign created in Meta Ads Manager can appear across Facebook Feed, Facebook Marketplace, Facebook Stories, Facebook Reels, Facebook right column, Instagram Feed, Instagram Stories, Instagram Reels, Instagram Explore, Messenger inbox, and the Audience Network (third-party apps and websites). One campaign, one budget, multiple platforms.

This matters because it eliminates the need to run separate campaigns on each platform. A small business with a limited budget can reach users across Facebook and Instagram simultaneously. The Advantage+ Placements feature (formerly automatic placements) lets Meta’s algorithm distribute your budget to whichever placement delivers the best results at the lowest cost. In most cases, this outperforms manual placement selection.

Facebook Marketplace deserves a special mention. In the UK and US, Marketplace has become a significant channel for local businesses, used car dealers, furniture retailers, and property listings. Marketplace ads appear alongside organic listings and carry a native feel that reduces ad fatigue. This placement is unique to Facebook and unavailable on any other social platform.

Meta’s ad platform has been developing for over 15 years. Its audience segmentation, remarketing capabilities, conversion tracking, and AI-powered optimisation tools represent the most mature advertising infrastructure in social media. That maturity translates to more reliable campaign performance, especially for conversion-focused objectives.

Choosing the Right Campaign Objective

Meta offers six campaign objectives in 2026. Your choice tells the algorithm what type of user to show your ad to. Get this wrong and you will burn budget reaching people who will never convert.

Awareness

Maximum reach at the lowest CPM. Suited for new brand launches, event promotions, and top-of-funnel awareness. The algorithm optimises for impressions and ad recall lift. Use this when your goal is visibility, not clicks or sales.

Traffic

Drives users to a website, app, or landing page. The algorithm targets people likely to click. Useful for blog content, product pages, and event registrations. Be aware: traffic campaigns attract clickers, not necessarily buyers. If your goal is sales, do not use this objective.

Engagement

Optimises for likes, comments, shares, video views, or Messenger conversations. Builds social proof on posts and can increase page following. Engagement is a vanity metric unless it feeds into a larger strategy (e.g., building a video view audience for retargeting).

Leads

Drives form submissions either through Meta’s native lead forms (users fill out a form without leaving Facebook) or through your website. Lead forms auto-populate fields like name and email from the user’s Facebook profile, which reduces friction significantly. For service businesses, B2B companies, and professional services, this is often the highest-performing objective.

App Promotion

Drives mobile app installs and in-app events. Relevant only for businesses with mobile applications.

Sales

Optimises for purchase events on your website or app. Requires the Pixel to be installed and purchase events to be firing. This is the objective for e-commerce businesses and any company tracking online transactions. The algorithm identifies users with the highest purchase intent and serves ads accordingly.

The single most expensive mistake in Facebook advertising: selecting Traffic when your goal is Sales. The algorithm will dutifully send you thousands of clicks from people who enjoy clicking but never purchase. If you want sales, choose Sales. If you want leads, choose Leads. Match the objective to your actual business goal.

Ad Formats That Work in 2026

Meta supports six primary ad formats. Each serves different purposes, and the best performers vary by industry. Here is what works and when to use each one.

Single Image Ads are the simplest format. One image, headline, description, CTA button. Square (1:1) or vertical (4:5) aspect ratios perform best. Vertical images take up more screen space on mobile, increasing attention. Production is straightforward: you can create effective image ads using Canva, Adobe Express, or Meta’s built-in creative tools. If you have no video capability, start here.

Video Ads consistently outperform static images. Meta’s algorithm favours video content, and Reels placements deliver 30-40% lower CPMs compared to Feed image ads. Vertical (9:16) format under 15 seconds for Reels and Stories, under 30 seconds for Feed. The first 3 seconds must hook the viewer. Include captions for sound-off viewing, which represents 80%+ of mobile users. Phone-shot, authentic-looking videos regularly outperform polished productions. The TikTok aesthetic has crossed over.

Carousel Ads let you display 2-10 images or videos that users swipe through. Each card gets its own headline, description, and destination link. Strong for e-commerce product showcases, step-by-step tutorials, before-and-after comparisons, and multi-service businesses. The swipe interaction keeps users engaged longer, and engagement rates tend to beat single images.

Collection Ads combine a cover image or video with a product catalogue grid below it. Users browse products without leaving Facebook. Built for e-commerce, and the in-app browsing experience improves conversion rates by reducing load time friction. If you run a Shopify or WooCommerce store with a product catalogue synced to Meta, Collection ads are worth testing.

Instant Experience opens a full-screen, mobile-first landing page inside Facebook when a user taps your ad. It loads almost instantly compared to the 3-5 second average for external web pages. Every additional second of load time increases bounce rates by roughly 7%, so this speed advantage directly impacts conversion rates. Ideal for brand storytelling, product launches, and immersive campaign experiences.

Lead Form Ads let users submit their contact information without leaving Facebook. Fields are pre-populated from the user’s profile, making completion effortless. Conversion rates run 2-3x higher than web-based forms. Keep form fields to 3-5 maximum, lead with the easiest question, and include a brief value proposition at the top of the form. Every extra field drops your completion rate. Integrate lead forms with your CRM through Meta’s direct integrations with HubSpot, Salesforce, or via Zapier. Pair with your email marketing to set up automatic nurture sequences.

Audience Targeting: Broad vs. Specific

Meta’s targeting infrastructure draws on over 15 years of behavioural data. In 2026, there are three main approaches, and the one that works best may surprise you.

Broad Targeting (Advantage+ Audience)

Enter basic demographics (age range, gender, location) and let Meta’s Andromeda algorithm find the right users based on conversion signals. No interest categories, no behaviour filters. Just parameters and trust in the machine learning.

This sounds counterintuitive. Surely narrowing your audience to people interested in your product would perform better? In practice, broad targeting outperforms detailed targeting in the majority of campaigns tested since late 2024. The algorithm has become remarkably good at identifying purchase-intent signals from user behaviour patterns that no manual targeting could replicate.

There is a catch: broad targeting requires sufficient conversion data. The algorithm needs roughly 50 conversions per week to optimise effectively. Campaigns that fall short of this threshold may not benefit from broad targeting. In that case, start with basic demographics plus 2-3 broad interest categories and transition to fully broad once you accumulate enough data.

Ideal audience size for broad targeting: 2-10 million people. In the UK, this might mean targeting adults 25-55 in England. In the US, a state or regional level is often appropriate.

Detailed Targeting

Interest-based, behaviour-based, and demographic filters let you narrow your audience. Job titles, income brackets, recent purchase behaviour, life events. Still available but less effective than it was pre-Andromeda. The algorithm now reaches relevant users on its own, and manually restricting the audience often limits its ability to find the best prospects.

Where detailed targeting still has value: B2B campaigns where job title or industry matters, hyper-niche products with a very specific buyer profile, and geographic restrictions for local service businesses. Even then, keep audience sizes above 50,000 to give the algorithm room to optimise.

Custom and Lookalike Audiences

This is where the real power sits.

Custom Audiences let you target people who already know your business. Website visitors tracked by the Pixel, customer email or phone lists uploaded to Meta, people who have engaged with your Facebook or Instagram content, and video viewers. These warm audiences convert at significantly higher rates than cold traffic because they have already interacted with your brand.

Lookalike Audiences find new users who share characteristics with your existing customers. Upload a source audience (your best customers, high-value purchasers, email subscribers) and Meta identifies similar users. Start with a 1% lookalike, which represents the closest match. In the UK, a 1% lookalike from a customer list generates an audience of roughly 470,000 people. In the US, roughly 2.1 million.

The quality of your source audience matters enormously. A list of 200 customers who spent over $500 in the past 90 days will produce a far better lookalike than a list of 10,000 random newsletter subscribers. Quality over quantity, always.

Retargeting campaigns using custom audiences are essential. Website visitors who did not convert are 3-5x more likely to purchase when retargeted than a cold audience. Not running retargeting means wasting the majority of your prospecting budget, because most visitors will not convert on their first visit. In e-commerce, up to 95% of first-time visitors leave without buying.

Budget Planning and Real Cost Data

Facebook ad costs vary by industry, objective, format, audience quality, and time of year. The table below reflects 2026 averages across UK and US markets.

Facebook’s CPM average runs lower than Instagram’s because Facebook offers additional lower-competition placements: Marketplace, right column, and Audience Network. When Advantage+ Placements is enabled, the algorithm automatically shifts spend towards the cheapest effective placement.

Budget Recommendations by Business Size

Small business / testing phase: £15-30 / $20-40 per day. Run a single campaign with 3-4 creative variations. Minimum 7-day run to exit the learning phase. Monthly spend: £450-900 / $600-1,200. At this level, focus on one objective only. Splitting a small budget across multiple campaigns guarantees none of them has enough data to optimise.

Mid-market / growth stage: £50-150 / $60-200 per day. Run separate prospecting and retargeting campaigns. The prospecting campaign reaches new audiences; the retargeting campaign re-engages website visitors and engaged users. Allocate roughly 70% to prospecting and 30% to retargeting. Monthly spend: £1,500-4,500 / $1,800-6,000.

E-commerce / scale: £150+ / $200+ per day. Advantage+ Shopping campaigns with broad creative sets, catalogue ads, and continuous optimisation. At this level, creative testing and refresh cycles become the primary performance driver. Monthly spend: £4,500+ / $6,000+.

How to Reduce Costs

• Use video creatives. CPMs for video are 25-35% lower than static images on average.
• Enable Advantage+ Placements. Let Meta find the cheapest effective placement automatically.
• Target broadly. Narrow audiences drive up CPCs because you are competing for a smaller pool.
• Refresh creatives every 7-14 days. Creative fatigue inflates costs by up to 50%. Rotate 3-5 variations.
• Run retargeting. Warm audiences convert 3-5x more efficiently than cold traffic.
• Schedule strategically. Analyse your conversion data by hour and day. For most B2B businesses, running ads between 2am and 6am wastes budget. Adjust dayparting accordingly.

Seasonality matters. Q4 (October through December) is the most expensive period: Black Friday, Cyber Monday, and Christmas campaigns spike competition and CPMs. Q1 (January through March) and summer months typically see lower costs. If budget is limited, spending more aggressively during off-peak periods stretches your money further.

Pixel, Conversion API and Tracking

Why Tracking is Non-Negotiable

Running Facebook ads without conversion tracking is like running a shop without a till. You know people are walking in, but you have no idea who is buying. The Pixel and Conversion API work together to give Meta the data it needs to optimise your campaigns towards actual business outcomes.

Meta Pixel

A JavaScript snippet installed on your website. It fires events when users perform specific actions: PageView, ViewContent, AddToCart, InitiateCheckout, Purchase, Lead, CompleteRegistration. Each event tells Meta which users are converting, and the algorithm uses this data to find more users who match the same behavioural profile.

Install via Google Tag Manager for clean implementation. Set up standard events that match your business goals. E-commerce sites need Purchase and AddToCart at minimum. Service businesses need Lead or CompleteRegistration. The more event data you provide, the more effective the algorithm becomes.

Conversion API (CAPI)

Since iOS 14.5 introduced App Tracking Transparency, browser-based Pixel tracking has become unreliable. Users opt out of tracking, cookies get blocked, and Safari’s Intelligent Tracking Prevention limits data collection. On iOS devices, the Pixel may miss 30-40% of conversion events.

The Conversion API solves this by sending event data directly from your server to Meta, bypassing the browser entirely. When Pixel and CAPI work together, conversion data accuracy improves by 30-40%. Meta recommends achieving an Event Match Quality score of 8/10 or above. Below this threshold, campaign optimisation suffers noticeably.

Most major platforms support CAPI natively. Shopify, WooCommerce, and WordPress have built-in or plugin-based CAPI integrations. If you use a custom-built website, your development team will need to implement server-side event passing via Meta’s API documentation.

Ongoing Optimisation

Launching a campaign is half the job. What you do in the weeks that follow determines whether you scale profitably or bleed budget.

The Learning Phase

Every new campaign (or ad set) enters a learning phase where Meta’s algorithm experiments with different audience segments and placements to find what works. This phase typically requires 50 conversion events and lasts 3-7 days. During this period, performance will be inconsistent and costs may be higher than usual. That is normal.

The critical rule: do not touch the campaign during the learning phase. Changing budget, audience, or creative resets the learning phase. Each reset costs you money and delays optimisation. Set it up correctly from the start, launch, and wait.

Weekly Review Metrics

After the learning phase completes, review performance weekly. The metrics that matter depend on your objective, but these four are universal:

• Click-through rate (CTR): Below 1% signals a creative or targeting problem. Your ad is not resonating with the audience it is reaching.
• Cost per acquisition (CPA): Is each conversion costing more than it is worth? Compare CPA against your customer lifetime value or average order value.
• Frequency: When this exceeds 3.0, the same people are seeing your ad repeatedly. Creative fatigue sets in, performance drops, and costs rise. Time to refresh creatives or expand your audience.
• Return on ad spend (ROAS): For e-commerce, this is the primary metric. How much revenue does each pound or dollar of ad spend generate? A ROAS target of 3x-5x is standard for healthy e-commerce campaigns. Below 2x, the campaign needs attention or should be paused.

Bid Strategy Progression

Start new campaigns with “Maximise Conversions” or “Lowest Cost” bid strategy. This gives the algorithm freedom to find conversions at whatever cost. Once you have accumulated sufficient data (50+ weekly conversions), switch to “Cost Cap” or “Target CPA” to control costs while maintaining volume. Applying cost constraints too early starves the algorithm of data and hurts long-term performance.

Creative Testing

In 2026, creative quality is as important as targeting. Meta’s Andromeda algorithm analyses image colours, video pacing, speech tone, and text sentiment to decide which users see which ad. Upload 3-5 different creatives per ad set. Test variations in visual style, messaging angle, and format (image vs. video vs. carousel). Let the algorithm distribute impressions to the winners and kill the underperformers after 7-14 days. Then refresh with new creatives and repeat the cycle.

Meta Ads Manager includes AI-powered creative tools: background removal, text overlay variations, image expansion, and video templates. These are useful for generating quick variations but should be reviewed for brand consistency. Automation helps with volume; human judgement ensures quality.

Budget-Killing Mistakes

After managing campaigns across dozens of industries, certain patterns emerge repeatedly. These mistakes account for the majority of wasted ad spend.

Mismatched Objectives

Already covered above, but it bears repeating because it is that common. A traffic campaign will never deliver the same sales results as a sales campaign. The algorithm optimises for exactly what you tell it to optimise for. Tell it to find clickers, it finds clickers. Tell it to find buyers, it finds buyers.

Interfering with the Learning Phase

Panicking 48 hours after launch and changing the budget, audience, or creative. Every significant edit resets the learning phase. If you are not prepared to let a campaign run untouched for at least 7 days, you are not ready to run Facebook ads. Set a calendar reminder. Close Ads Manager. Walk away.

No Retargeting

Spending money to drive traffic to your website and then never following up with those visitors. These people clicked your ad, visited your site, and showed interest. They are 3-5x more likely to convert than a cold audience. Without retargeting, you are paying to fill a leaky bucket. Set up a Pixel-based custom audience of website visitors (last 30 days) and run a retargeting campaign with a separate budget.

Creative Stagnation

Uploading one image and letting it run for months. Creative fatigue builds within 7-14 days. Costs climb, CTR drops, and the algorithm starts throttling delivery. Maintain a rotation of at least 3-5 creatives and replace underperformers regularly.

Ignoring Mobile Landing Page Speed

Over 95% of Facebook traffic comes from mobile devices. If the page load speed of your landing page exceeds 3 seconds on mobile, you are losing a significant portion of the traffic you paid for. Run your landing page through Google PageSpeed Insights. A mobile score below 50 indicates serious problems. Compress images, remove unnecessary scripts, and consider a CDN. If your website consistently scores poorly, the issue is fundamental and needs addressing before scaling ad spend.

Set-and-Forget Management

Launching a campaign and never looking at it again. Which creatives are performing? Which audience segments are converting? Which placements are driving results? Without weekly reviews, you cannot reallocate budget from underperformers to winners. Campaign management is ongoing work, not a one-time setup.

Frequently Asked Questions