AIDA vs PAS: Copywriting Formulas and Ad Examples

You have a tiny window to make someone stop scrolling, and a few dozen words to make them care. Staring at an empty ad text box with a budget already approved is a special kind of pressure.

Here's the thing most experienced copywriters know: great ads are rarely written from scratch. They're built on a handful of formulas that have been used for decades because they mirror how people make decisions. Formulas don't make your copy generic. They give you a skeleton so you can spend your energy on the words that matter.

In this guide, you'll learn four ad copywriting formulas (AIDA, PAS, Before-After-Bridge and FAB), see an example of each, learn which one fits which stage of your funnel, and get a simple way to test variations without wasting budget.

AIDA vs PAS: what is the difference?

AIDA builds interest in a desired outcome. PAS starts with a problem the reader already recognizes. AIDA stands for Attention, Interest, Desire and Action. PAS stands for Problem, Agitate and Solution. Either can work in an ad, an email or a landing page; choose the starting point that fits what your reader already knows.

Use AIDA when you need to explain the offer. Introduce the idea, give a useful detail, show the outcome and ask for one action. This can suit an unfamiliar product or a reader comparing several options.
Use PAS when the problem needs little introduction. Name the frustration, explain its practical cost and show how your offer addresses it. Keep the agitation proportionate and avoid inventing risks or pressure.
Test the message, not just the acronym. Keep the audience, offer and destination the same so you can compare the two approaches. Neither formula guarantees more clicks or sales.

AIDA and PAS examples for the same product

Consider a fictional meal-planning app. Both examples offer the same next step:

AIDA: "What if this week's dinners were already planned? Build a weekly menu from recipes that fit your schedule. See your meals and shopping list in one place before the week begins. Create your first meal plan."

PAS: "Deciding what to cook every evening? Last-minute choices can mean extra shopping trips and another night of takeout. Plan your meals and shopping list together before the week begins. Create your first meal plan."

The AIDA version leads with a possible outcome. The PAS version leads with a familiar inconvenience. Compare which opening matches your audience, then use the headline analyzer and readability checker to review your draft before testing it.

Why formulas beat a blank page

A formula is a checklist for persuasion. It reminds you to name the problem, show the benefit and ask for action, which are the three things rushed ad copy most often forgets.

Formulas also make testing easier. If you write one ad with PAS and another with Before-After-Bridge, you're testing two genuinely different angles, not two versions of the same sentence with a swapped adjective.

Before you pick a formula, get three things clear:

Who is this for? One specific audience, not "everyone who might buy."
What do they want or fear? The outcome or problem that actually drives the decision.
What should they do next? One action, matched to how warm they are.

Formula 1 - AIDA (Attention, Interest, Desire, Action)

AIDA is the oldest and most flexible of the bunch. You grab attention, build interest with a relevant detail, create desire by showing the payoff, then ask for action.

Attention: A bold claim, question or pattern-breaking line.
Interest: A specific detail that makes the reader lean in.
Desire: The outcome they'll get, in their terms.
Action: A clear, low-friction next step.

Here's an illustration for a fictional meal-prep service:

Still deciding what's for dinner at 7 p.m.? Our chef-made meals arrive ready to heat in under five minutes. Picture weeknights with no grocery runs and no dishes piling up. Choose your first week's menu today.

AIDA works well when you have a bit of room, like social feed ads or longer display copy.

Formula 2 - PAS (Problem, Agitate, Solution)

PAS is often the most direct path to a click. You name a problem, make the reader feel its cost, then present your offer as the fix.

Problem: State the pain in the reader's words.
Agitate: Show what it's costing them in time, money or stress.
Solution: Introduce your product as the way out.

Here's a weak version, for comparison:

Our invoicing software has lots of great features. Try it today.

Here's a stronger PAS version of the same ad:

Chasing late invoices again? Every hour you spend sending reminders is an hour you're not billing. Automatic payment reminders follow up for you, politely and on schedule. Start your free trial.

The stronger version speaks to a moment the reader recognizes, and the solution feels earned. Be careful with the "agitate" step, though. You want empathy, not fear-mongering.

Formula 3 - Before-After-Bridge (BAB)

Before-After-Bridge paints two pictures and then connects them. It's useful when your product delivers a transformation that's easy to visualize.

Before: The reader's current, frustrating situation.
After: What life looks like once the problem is solved.
Bridge: Your product as the path between the two.

An illustration for a fictional scheduling app:

Before: twelve emails to book one meeting. After: clients pick a time that works in one click. The bridge? A booking link that syncs with your calendar. Get yours free.

BAB works nicely in short formats because the contrast does a lot of the work for you. It also pairs well with before-and-after visuals in image or video ads.

Formula 4 - FAB (Features, Advantages, Benefits)

FAB is a translation tool. It turns what your product is into what it does for the buyer.

Feature: The fact about the product.
Advantage: What that feature makes possible.
Benefit: Why the reader personally cares.

An illustration for a fictional backpack:

Waterproof zippers and a padded laptop sleeve keep your gear dry and protected, so you can bike to work in the rain without worrying about your laptop.

FAB is especially handy for product-focused ads where buyers compare specs, and for warm audiences who already understand the problem and need a reason to choose you.

Match the formula to the funnel stage

The same audience member needs different messages at different moments. Matching your formula to their awareness level is often more important than the formula itself.

Cold audiences (top of funnel)

These people don't know you and may not have named their problem yet. PAS and AIDA work well here because they lead with something the reader already feels. Keep the ask light, like reading a guide or watching a short video.

Warm audiences (middle of funnel)

They've visited your site or engaged with your content. Before-After-Bridge helps them picture the outcome, and FAB helps them compare you to alternatives. Ask for a trial, demo or sign-up.

Hot audiences (bottom of funnel)

They're close to buying. Keep it short and specific: remind them of the key benefit, address a lingering objection, and make the CTA unmistakable. A compressed FAB or a direct offer usually does the job.

For platform-specific advice, see our guides to Meta ads copy for Facebook and Instagram and writing Google Ads copy.

Test variations the smart way

Formulas give you strong starting points, but your audience decides what wins. A simple testing method keeps you learning without burning budget.

Test angles before words. Run a PAS version against a BAB version first. Big differences in angle usually teach you more than small wording tweaks.
Change one major element at a time. If you swap the hook, the offer and the image together, you won't know what made the difference.
Give tests enough time and data. Calling a winner after a handful of clicks often leads you to the wrong conclusion.
Keep a swipe file of winners. Note which formula, hook and audience each winning ad used so patterns emerge over time.
Iterate on the winner. Once an angle wins, test new hooks or CTAs within that angle.

Before you launch, run each headline through the free headline analyzer, and paste your body copy into the readability checker to make sure it reads quickly on a phone.

Common mistakes to avoid

Forcing every formula step into tiny ad spaces. In short formats, compress steps or drop the weakest one.
Leading with features for cold audiences. People who don't know they have a problem won't care about your specs.
Over-agitating. PAS should feel empathetic, not manipulative.
Vague CTAs. "Learn more" is fine sometimes, but a specific action usually reads stronger.
Testing tiny tweaks first. Test big angle differences before polishing word choices.
Ignoring the landing page. An ad that promises one thing and lands on a page about something else wastes the click.

How CopyZai's Ads Copywriting helps

CopyZai's Ads Copywriting tool turns these formulas into drafts quickly. You pick the tool, add your context, including your product brief, target audience, offer and tone, and it generates ad copy in seconds. You can ask for a PAS version, a Before-After-Bridge version and an AIDA version side by side to compare angles.

Then you refine by continuing the chat, asking for shorter lines, a different hook or a version for a warmer audience. Your drafts are kept in your chat history, so your best options are easy to find later. You can see the plans to get started.

FAQ

Is AIDA better than PAS?

There is no universal winner. AIDA gives you room to introduce a product and build interest; PAS gives you a direct structure for a problem the reader already understands. Test both with the same offer and audience, and compare the outcome that matters for the campaign.

Which ad copywriting formula is best?

No single formula wins everywhere. PAS is often a strong choice for cold audiences with a clear pain point, while FAB suits buyers comparing options. The best approach is to test two or three formulas and let your results decide.

Can I combine copywriting formulas?

Yes, and experienced writers do it all the time. You might open with a PAS-style problem, then use FAB to explain why your product solves it. The formulas are guides, not rules.

How long should ad copy be?

It depends on the platform, the format and how warm your audience is. Cold audiences sometimes need more context, while retargeting ads can be very short. Write the shortest version that still makes the benefit and the next step clear.

How many ad variations should I test at once?

For most small teams, two to four variations is a manageable starting point. Too many variations split your budget so thinly that it takes a long time to learn anything. Start with distinct angles, then narrow down.