Marketing & Trade Spend · Money back · Hours back · sample run · 61 ms

Media Tech-Tax Auditor

Publishers received 57.9% of advertiser spend: 1.27% went to fees above contracted caps, 1.50% of matched spend is an unexplained delta, and 10.1% of spend has no SSP record.

Evidence · DSP log

31c993bd-d9ed-52d6-a5df-9ca1ffb1f5c7,2026-09-01 14:09:15,Trailhead Outfitters Co.,TO-Fall-Prospecting,Crestline Exchange,northwoodsjournal.com,0.012000,18.00,0.

Working

DSP fee $0.002160 is 18.00% of $0.012000 gross. The 15% cap allows $0.001800, so $0.002160 - $0.001800 = $0.000360 ($0.360 CPM) is over.

Method

1DSP and SSP records are joined on auction id (trimmed, case-insensitive); duplicate ids keep the first record.

2Expected media cost = gross spend - DSP fee - data fee; unknown delta = expected media cost - SSP clearing price; SSP fee = clearing price - publisher revenue.

Photo: Jud Mackrill, Unsplash

1.27%

Fees above caps · $12,732.39 per $1M of spend

Auction ID	Advertiser	SSP
31c993bd-d9ed-52d6-a5df-9ca1ffb1f5c7	Trailhead Outfitters Co.	Crestline Exchange
b7395744-2b33-528a-9228-b6e5b669dbbe	Trailhead Outfitters Co.	Crestline Exchange
bd6b9bb2-c1c5-504b-9be0-07e0f684ac3a	Trailhead Outfitters Co.	Crestline Exchange

Reads

DSP log and SSP or publisher log for the same impressions

Produces

Supply path fee breakdown and a transparency claim (Transparency claim letter, Supply path fee breakdown (CSV), Impression-level findings (CSV))

Price

$2,500 / month, 30% to the referring partner

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Tax and accounting results are not tax advice. Rates, thresholds and rules change; confirm them with a qualified tax adviser or CPA.