By how much are platforms inflating their numbers?
You know the platforms inflate. The question is by how much. Is it 10%? 40%? 70%? Here's how to measure the exact gap between what they claim and what your books confirm.
The short answer
Most businesses see a 20-60% inflation gap. That means if your platforms collectively claim $80,000 in generated revenue, your actual revenue is likely between $50,000 and $64,000. The exact number depends on how many platforms you use, your attribution settings, and how much overlap exists between channels.
Why the size of the inflation gap changes your decisions
If your platforms overcount by 15%, your budget decisions are roughly correct. You might be slightly overspending on certain campaigns, but you are in the right ballpark.
If your platforms overcount by 50%, you are operating with fundamentally broken data. A campaign that looks like it has a 4x ROAS actually has a 2x ROAS. A campaign at 2x ROAS is really at 1x, which means you are breaking even, not profiting. Your “best” campaigns might barely be profitable and your worst campaigns might be outright losing money.
The inflation gap is not academic. It determines whether you should be spending more on ads, less on ads, or reallocating between platforms. And you cannot know any of that without measuring it.
What the inflation gap is made of
The gap between platform-claimed revenue and actual revenue comes from several sources:
- Cross-platform double counting. This is typically the largest contributor. Two or more platforms claim the same sale. The more platforms you run, the bigger this gets.
- View-through inflation. Meta and TikTok count conversions from people who only saw an ad. Many of these people would have purchased anyway. This inflates Meta and TikTok numbers more than Google (which relies more on click-through).
- Branded search cannibalization. Google Ads branded campaigns take credit for customers who searched your name. These customers already knew you. The ad did not create the demand, it just intercepted it.
- Conversion definition mismatch.One platform counts “add to cart” as a conversion while another counts “purchase.” If you are not careful about what each platform is actually counting, the comparison is apples to oranges.
How to measure the exact inflation gap for your business (6 steps)
- 1Pull conversion value from every ad platform
In Google Ads, add the Conv. value column at the account level. In Meta Ads Manager, add Purchase Conversion Value. For each platform, note the total claimed revenue for the month.
- 2Add up all platform-claimed revenue
Put the numbers in a spreadsheet. Column A: Platform name. Column B: Claimed revenue. Sum column B. This is your total claimed revenue across all platforms.
- 3Pull actual revenue from your accounting software
In QuickBooks, run the P&L for the same month and note Total Income. In Xero, note Total Revenue. This is what actually happened in your business.
- 4Calculate the inflation percentage
Formula: (Total Claimed - Actual Revenue) / Actual Revenue x 100. Example: ($78,000 - $52,000) / $52,000 x 100 = 50% inflation. Platforms are collectively overclaiming by 50%.
- 5Do this for 3 consecutive months
One month is not enough. The inflation rate may fluctuate based on seasonal campaigns, promotions, or changes to attribution settings. Three months gives you a reliable baseline.
- 6Calculate the platform-level inflation
This is harder. To estimate each platform's individual inflation, try pausing one platform for a week and measuring the revenue impact. If pausing Meta ads does not change your revenue, Meta was overclaiming significantly. This is disruptive but revealing.
How to cross-reference the inflation gap with your books
Once you know your inflation percentage, apply it to everything:
- Adjust campaign-level ROAS by the inflation ratio. If your average inflation is 40%, multiply every campaign's claimed revenue by 0.60. Recalculate ROAS. This is closer to reality.
- Check if the ratio is stable month over month. If January inflation was 35%, February was 42%, and March was 38%, you have a reliable adjustment factor around 38%. If it swings from 20% to 60%, something is off with your tracking or attribution settings.
- Use the adjusted ROAS for budget allocation. When deciding where to put your next dollar, use the inflation-adjusted numbers, not what the platforms report. This alone can redirect thousands of dollars to more productive campaigns.
What it takes to measure platform inflation every month
The basic calculation takes about 20 minutes. Measuring platform-specific inflation (by running holdout tests or pause experiments) takes days or weeks and disrupts your campaigns.
Most businesses never measure their inflation gap at all. They accept platform numbers at face value and unknowingly make budget decisions based on overstated data. The few who measure it usually do it once and then stop because the manual process is tedious.
Total time: 20 minutes for the basic calculation. Days or weeks for platform-specific holdout tests. Most businesses do neither.
Or see your exact inflation gap automatically, every month
Bottomline connects to your ad platforms and accounting software. It measures the gap between what platforms claim and what your books confirm, every month, without any manual work.
3-month average inflation: 38%. Use this to adjust platform-reported ROAS.
No spreadsheets. No guessing. A clear, trackable number that tells you exactly how much to discount platform claims when making budget decisions. Updated automatically, every month.