Measurement Gap Calculator

A 2-minute diagnostic to quantify how much of your marketing budget is exposed to misallocation because of measurement blind spots - and where the largest gaps actually sit in your channel mix.

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Spend
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Performance
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Channel Mix
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Maturity
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Your Gap

What's your annual digital media spend?

Include paid media across all digital channels. Exclude production, agency fees, and MarTech licenses.

$10.0M
The calculator models exposure as a percentage of spend, so the relative gap is what matters most — absolute numbers scale linearly.

What's your average platform-reported ROAS?

This is the blended return reported inside ad platforms (Meta Ads Manager, Google Ads, etc.) - before any independent calibration. Platform-reported ROAS tends to overstate incremental performance because of last-touch attribution, view-through credit, and cross-platform double-counting.

3.5x
The higher the self-reported ROAS, the larger the absolute dollar gap between claimed and actual incremental return — even if the % overstatement stays the same.

How is your spend allocated across channels?

Enter % of total paid media for each channel. Your blended overstatement rate is a weighted average of per-channel gaps — some channels (CTV, programmatic, social video) overstate far more than others (branded search, email).

Total allocation: 100%

Where does your measurement stack sit today?

Answer five quick questions about how your team measures marketing. We'll place you on a 4-level maturity scale and show exactly how much of the gap your current setup can correct.

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Your measurement maturity
Answer the questions to see your level
Each level represents a different ceiling on how much channel overstatement your measurement can detect and correct.

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Your measurement gap — potential annual misallocation
$2.1M
At your current maturity level, this is the share of platform-reported performance your measurement cannot verify or correct — meaning budget decisions based on these numbers are exposed to reallocation risk.
Per month at risk
$175K
Monthly misallocation exposure
Blended overstatement
38%
Weighted across your channel mix
% of spend at risk
21%
Gap as share of total media

How we got there

Where the gap actually sits - by channel

The biggest gaps are rarely distributed evenly. These channels are the highest-priority candidates for independent calibration.

Your maturity roadmap - how much of the gap closes at each level

Every maturity jump reduces the uncorrected gap. These are the capabilities that move the number.

Ready for a precise number for your business?

A Lifesight diagnostic workshop replaces these industry averages with your actual channel-level incrementality - typically in under 4 weeks.

Book a measurement diagnostic
Methodology
Gap tax formula: annual media spend × platform ROAS × blended channel overstatement rate × uncorrected fraction at your maturity level. Platform ROAS amplifies the gap because higher self-reported returns mean larger absolute overstatement. The blended overstatement rate is the weighted average of per-channel overstatement based on your channel mix. The maturity correction reflects how much of that overstatement your current measurement setup can identify and correct — Level 1 brands can correct almost none of it; Level 4 brands catch 90%+. Per-channel overstatement ranges are derived from a meta-analysis of geo-lift studies, holdout experiments, and PSA tests across 300+ brands. Actual gaps vary by vertical, funnel position, and targeting strategy — a Lifesight pilot replaces these benchmarks with your own measurements.