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Getting 100% accurate ad spend figures from external software is impossible since Google keeps that data locked down, but you can get incredibly close estimates by using the right combination of ad analysis tools . Professional ad intelligence platforms estimate competitor spend by tracking their ad impression share, keyword search volumes, and average cost-per-click metrics across multiple regions over time. More importantly, these tools analyze creative longevity; if a competitor has been running the exact same ad copy and landing page for three months straight, you can safely assume that specific creative is highly profitable and driving real conversions for them. By aggregating these data points, you can map out a highly accurate blueprint of your rivals’ paid acquisition strategies, allowing you to copy their winning angles while avoiding the expensive keyword mistakes they’ve already paid to figure out.