Marketing Audit Checklist: Seven Checks to Find Budget Leaks and Upsides

Add up the results every platform attributes to itself, and you’ll usually get more sales or leads than your business actually had. That difference hides money you’re wasting and channels that might deserve more resources..

A marketing audit helps uncover these by measuring every channel with the same yardstick. This checklist walks you through seven checks across ads, organic search, email, and your sales data. Whether you sell online or generate leads for a sales team, you can likely run these checks on reports you already have.

The Seven Checks at a Glance

Before You Start: Use One Yardstick

Most audit templates are questionnaires about goals and branding. This questionnaire focuses on money and follows MIT Sloan Management Review’s widely cited audit definition: check every channel, in the same order, without trusting any channel’s own report card, on a regular schedule.

Because every ad platform counts results in its own way, taking credit for any sale or lead within a set number of days after someone sees or clicks their ad, you need to be especially careful not to trust a platform’s native reporting. Before starting your audit, prepare the following:

1. List every channel: ads, organic search, email, and your store or CRM (the system your sales team uses to track deals).

2. Pick one source of truth: orders in your store or qualified leads in your CRM. Every other number will get checked against it during the audit.Define a result once: ensure that  sale or  lead means the same thing across channels.

3. Pick your dates: we recommend the last thirty days plus eight weeks of history to help spot trends.

Check 1: Compare Every Channel Side by Side

For each channel, write down what you spent, how many results it claims in its own reports, and how many your source of truth confirms came from it. In GA4, your store, or your CRM, filter by traffic source; ad links carry a tracking tag, so you can see who sent each buyer or lead. Divide spend by confirmed results to get your confirmed cost per result.

Here’s a sample month at a business, where a key result is a sale:

Meta’s numbers place each result at $28, but confirmed results place them at $56. LinkedIn looks like $29 a result, but by your count it costs $100. The four channels that report results claim 560 results in aggregate, but only 340 of those are confirmable, meaning several are claimed twice.

It’s possible that your own count might run low, since a tracking tag misses someone who sees an ad on their phone and converts later on a laptop. It’s OK for the truth to sit somewhere between the two numbers..

Check 2: Spot What Changed

Pick one main number per channel, for example: results for ads, clicks for organic search, sales or leads for email. Find the  highest and lowest week over the last eight weeks and set that as its normal range. Flag any channel that lands outside that range two weeks in a row.

If email usually brings 40 to 60 leads a week and drops to 30 two weeks running, something changed. One odd week is often just noise, so be sure to confirm the rule with a second week..

Check 3: Find Budget Leaks

A budget leak is money that bought nothing your source of truth can confirm. Leaks usually hide in five places.

Campaigns With Spend but No Results

Sort paid campaigns by spend for the last thirty days and cross out every one with confirmed results. Whatever’s left should be paused or rebuilt.

Ads on Your Own Brand Name

Many companies pay for ads on their own name while already ranking first for free. When eBay turned those ads off, its researchers found almost no loss, because people clicked the free result instead. Your brand probably isn’t eBay, so test it: pause brand ads in one region for two weeks and compare confirmed sales or leads with everywhere else. If competitors bid on your name, expect some loss and weigh it against what you save.

Ads That Take Credit for Email Results

Retargeting ads follow people who already visited your site, and many were likely to return anyway because of your emails. Stop showing retargeting ads to email subscribers for two weeks. If their sales or sign-ups barely change, cut the retargeting budget.

Pages That Get the Click but Lose the Result

In GA4, look for landing pages with lots of paid visitors and few sales or form fills. Fix the page before adding budget, as every click sent to it is money lost.

Orphan Campaigns

List any campaign with spend that isn’t part of a current plan. Old tests and forgotten boosted posts usually turn up here.

Check 4: Find Upsides

Upsides are the places where more effort would bring more results. Look in three spots:

• Pages that already convert. In Search Console and GA4, find pages that bring visitors who buy or sign up. They deserve more links and maybe a small ad boost.

• Emails that earn. In your email tool, find the automated emails, often called flows, that drive the most sales or meetings. Send more subscribers to them.

• Channels capped by budget. In each ad platform, find campaigns with a low cost per confirmed result that run out of daily budget. They’re telling you they could take more.

Check 5: Check Each Platform’s Claims

Platform numbers usually miss yours for two reasons. First, two platforms claim the same result: someone clicks a Meta ad, then a Google ad, then converts, and both count it. Second, one platform counts a result twice: Meta can receive the same purchase or lead from your website and your server, and Meta’s own guide says both copies need a matching ID to count once.

To tell a tracking problem from a counting problem, divide the results Meta received (in Events Manager) by your confirmed results each week, and track that ratio for eight weeks. If the ratio suddenly drops, your tracking broke. If it suddenly jumps, Meta is likely counting the same result twice. If it holds steady while Meta credits fewer results to its ads, the cause is how Meta assigns credit.

To check leads from Meta’s forms, download them from Meta’s Leads Center and match each one to your CRM. A lead missing from the CRM means the connection between systems is broken.

Check 6: Pick Where the Next $1,000 Goes

Google, Meta, and LinkedIn each suggest changes, but only inside their own platform, so moving money between them is your call. Find your most expensive and cheapest channel per confirmed result, then check that the cheaper one can take more money using the budget-capped campaigns from your upsides list.

In the sample business above, $1,000 buys about 10 results on LinkedIn and about 18 on Google Ads, so moving it would net roughly eight more. Extra budget usually costs a bit more per result than the average, so treat eight as the best case. Your own count also misses people who see an ad first and buy later, which hurts channels like LinkedIn, so move part of the budget first and check the result before moving the rest.

Check 7: Confirm the Fix Worked

After four weeks, put the actual result next to the expected one and note anything else that changed, like promotions, holidays, or new competitors. Over a few audits, this record will show which moves work best for your accounts.

How Often to Run a Marketing Audit

Run the full audit every quarter, when you take on a new account or brand, and after any month that fell short of its goals.Checks 2 and 3 should be run weekly to catch problems while they’re still small.

Run a Free Marketing Audit in Summer

Summer’s free marketing audit runs Checks 1, 3, 4 and 6 for you, across every channel you connect. Connect your ads, organic search, analytics, email, and store once, and Summer will review the last thirty days. You’ll get back a report showing where budget leaks, where to double down, and your next best move. Once your sources are connected, you can run one free audit a day in Claude or ChatGPT.

Summer runs most of these checks for you every day. It flags channels that drift outside their normal range, ranks your next moves by what they should earn, and measures every historical change, so you always know what worked.

Frequently Asked Questions

What is a marketing audit checklist?

A set of checks you run across every channel (ads, organic search, email and your sales data) to find budget leaks, upsides and where your next dollar should go.

How do you compare channels that report different numbers?

Check every channel against one source of truth, like your store’s orders or your CRM’s qualified leads, using the same dates and definition of a result. Then compare confirmed cost per result.

Is a PPC audit the same as a marketing audit?

No. A PPC audit reviews one paid ad platform, while a marketing audit compares ads, organic search, email and sales data against the same goal.

Can you run a marketing audit for free?

Yes. Every check here works with your platforms’ own reports, and Summer runs four of them free once a day.