Marketplace Advertising

Amazon TACOS Optimization
— the metric that actually matters.

ACOS tells you how efficiently your ads are performing in isolation. TACOS tells you whether your advertising strategy is actually profitable for the business. We optimize for TACOS — the metric that accounts for organic revenue, not just attributed ad sales.

ACOS — incomplete view

Ad Spend ÷ Ad Revenue × 100

Measures ad efficiency in isolation. Ignores organic sales entirely — giving a distorted view of advertising's true business impact.

TACOS — full business view

Ad Spend ÷ Total Revenue × 100

Measures advertising as a percentage of total business revenue — including organic. Maps directly to overall profitability.

How it works

The two levers of TACOS reduction

01

Reduce ad waste (lower the numerator)

Systematic negative keyword addition eliminates spend on non-converting queries. Match type architecture separates high-converting exact match keywords from broad discovery — preventing profitable terms from subsidizing irrelevant traffic. Bid adjustments remove or reduce bids on poor-performing ASINs and placements.

02

Grow organic revenue (grow the denominator)

As organic rank improves through listing optimization and CVR improvement, organic sales increase without proportional ad spend increases. The same ad budget represents a smaller percentage of a larger total revenue base — TACOS declines naturally as organic compounds.

03

Track the flywheel

TACOS declining while ACOS remains stable is the signal that the strategy is working. Ads are building organic momentum — not just funding direct attributed purchases. We track both metrics weekly to distinguish noise from signal.

04

Calibrate spend against margin, not category benchmarks

A 10% TACOS is excellent for a 40% margin product and catastrophic for a 12% margin product. We work backwards from your gross margin to define what TACOS ceiling still makes the business work — then optimize toward it.

Common questions

TACOS questions answered

TACOS (Total Advertising Cost of Sales) = Total Ad Spend ÷ Total Revenue × 100. Unlike ACOS, it measures advertising load against your entire business revenue — including organic sales — giving a more accurate picture of true advertising profitability.

ACOS measures ad spend against ad-attributed revenue only. TACOS measures ad spend against total revenue. A declining TACOS while ACOS stays stable typically means organic rank is improving — ads are generating incremental organic volume, not just covering direct paid attribution.

TACOS benchmarks vary by category, margin, and growth stage. Launch-phase sellers often accept 15–25% TACOS while building organic rank. Established listings with strong organic performance typically target 5–12%. The true ceiling is whatever TACOS still leaves acceptable profitability after all costs.

TACOS is reduced by cutting ad waste (negative keywords, bid efficiency) or increasing organic revenue (listing optimization, CVR improvement). The most sustainable approach combines both — reducing paid dependency as organic rank strengthens.

ACOS ignores organic sales entirely. A brand with strong organic rank looks like it has poor ACOS on remaining paid campaigns because those campaigns are at lower volume. TACOS captures what percentage of total revenue goes to advertising — the metric that maps directly to overall profitability.

Optimize your Amazon advertising for real profitability

Book a free consultation. We'll review your current ACOS and TACOS trends and identify the highest-impact opportunities to improve overall advertising efficiency.

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