# Attribution that a CFO will actually sign off on

> Server-side click IDs, deterministic UTM chaining, and why a 30-day cookie is a fallback — not a foundation.

- Source: https://socialmynt.com/blog/attribution-that-a-cfo-will-sign-off-on
- Author: Daniel Reyes
- Published: June 18, 2026
- Category: Attribution
- Reading time: 5 min read
- Publisher: SocialMynt (https://socialmynt.com)

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Every finance team that's ever audited an influencer campaign has asked the same three questions: which creator, which post, which conversion. Any attribution stack that can't answer those cleanly is going to lose the budget review — no matter how good the ROAS story looks in the deck.

The modern answer is a layered one. Server-side click IDs handle the majority of clean traffic. Deterministic UTM chaining catches attributed sessions when a click ID is missing. A 30-day cookie is the fallback for the edge cases where neither fired. Together, that stack gets you into the high 90s of attributable conversions — and, crucially, gives finance a clear audit trail per creator, per post, per dollar.

This is the wiring most brands wish their creator programs had, and it's why enterprise buyers are moving off spreadsheet-run influencer programs. Not because spreadsheets don't work, but because they can't be defended in a QBR.