Ad Spend Reality (Blended ROAS/CAC) for Shopify

Growth & Marketing • Shopify

Shopify Marketing shows clicks and conversions, but connecting ad spend to revenue is manual hell. Facebook says 4x ROAS, Google says 6x, but your bank account doesn't match. You need one view showing which channels truly pay back after refunds and fees.

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Ad Spend Reality (Blended ROAS/CAC) for Shopify Example
Shopify Data Live sync
Auto‑Generated 2 min ago

What's Inside the Excel

Get a ready-to-use file with everything you need

Ad Spend Reality (Blended ROAS/CAC) Excel preview
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Blended ROAS

All platforms compared: Facebook, Google, TikTok side-by-side

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Winner/Loser rank

Channels ranked by true ROAS after refunds

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Budget reallocation

Exact $ to shift from losers to winners

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Attribution windows

Compare 1-day, 7-day, 28-day ROAS - see platform tricks

What You'll Get

Real outcomes for your Shopify business

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Find wasted spend: Identify $2,000-$10,000/month on losing channels that look good in-platform but don't pay back

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Know what to cut: Clear winner/loser ranking with exact $ to shift for optimal ROAS

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One source of truth: Stop juggling Facebook, Google, TikTok dashboards - compare apples to apples

Key Metrics & Data Slices

What this Excel Decision Kit tracks from your Shopify data

Blended ROAS

(Shopify revenue from ads) ÷ (Total spend across all platforms) after refunds

True CAC by Channel

Ad spend ÷ new customers acquired (deduping multi-touch)

Channel Efficiency Rank

Platforms ranked by ROAS with $ wasted on losers and $ to reallocate to winners

Attribution Window Impact

Compare 1-day, 7-day, 28-day attribution - see how each platform games numbers

Refund-Adjusted Revenue

What ad platforms claim vs. what you actually kept after returns

How We Calculate Blended ROAS & True CAC

From platform spend to real revenue attribution

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Blended ROAS

Definition: (Total revenue from ads) ÷ (Total ad spend across all platforms)

Source: Order revenue + ad spend from all channels

Granularity: Overall, by channel, by campaign

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True CAC

Definition: (Total ad spend) ÷ (New customers acquired)

Source: Ad spend + new customer identification

Granularity: By channel, by campaign

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Channel Efficiency Rank

Definition: Channels ranked by ROAS, with $ wasted if continued at current spend

Source: ROAS comparison + spend allocation

Granularity: Ranked list with reallocation recommendations

Shopify Data Nuances & Gotchas

What makes Shopify different and how we handle it

Data Sources We Use

  • Orders API: landing_site, referring_site for basic attribution
  • Customers API: created_at for new vs. repeat attribution
  • Marketing Events API: Shopify Pixel data (if installed)
  • CSV Upload: Facebook Ads, Google Ads, TikTok spend (or API connectors)

Common Pitfalls We Handle

  • Shopify's attribution is last-click only - multi-touch requires UTM import
  • Organic vs. paid: Shopify can't distinguish 'Facebook' social vs. Facebook Ads
  • Return rates vary by channel - discount-driven traffic often returns more
  • Shopify Pixel required for good attribution - many stores don't have it installed

Shopify-Specific Fields We Track

order.source_name: Online Store, facebook, instagram, google
order.client_details.landing_site: first page customer landed on
customer.created_at: for new vs. repeat customer attribution

How to Generate This Report

Shopify-specific setup in 6 steps

Connect Shopify Store

Authorize access to orders and marketing attribution data

Upload Ad Spend CSV

Export spend from Facebook, Google, TikTok and upload (or connect platforms directly)

Map Channel Attribution

Match Shopify's source_name to your ad platform names

Set Attribution Window

Choose 7-day or 28-day click attribution to match how platforms report

Generate ROAS Analysis

Excel shows blended ROAS, per-channel breakdown, and winner/loser ranking

Review Reallocation Plan

See exact $ to shift from losing channels to winners for optimal spend

Why Choose Spreadsheet Broccoli?

Start automating your Shopify reporting today and save hours every week.

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Expert-Built Templates

Our report recipes are designed by e-commerce experts who understand what metrics matter most for your business decisions.

Lightning Fast Setup

Connect your platforms in minutes, not hours. Our OAuth2 integration makes setup secure and simple.

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Excel & Sheets Native

Reports are delivered in perfectly formatted Excel files that work seamlessly with your existing workflow.

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Playbooks, not just reports

Our report recipes are designed to provide actionable insights and recommendations for your business.

Shopify Ad Spend Reality (Blended ROAS/CAC) FAQ

Common questions for Shopify users

How do you attribute Shopify sales to specific ad channels?

We use order.source_name and landing_site for basic attribution. For precision, import UTM parameters from your analytics tool.

What if I don't have Shopify Pixel installed?

Basic attribution still works from source_name, but it's less accurate. We'll recommend installing Pixel for better future tracking.

How do you handle refunds in ROAS calculation?

Critical: we subtract refunds from revenue before calculating ROAS. Channels driving high returns get penalized appropriately.

Can I compare different attribution windows?

Yes - see 1-day, 7-day, and 28-day ROAS side-by-side. Understand how platforms cherry-pick windows to look better.

What about new vs. repeat customers from ads?

We separate new customer acquisition (CAC) from repeat purchases. Channels with high repeat rates have better long-term ROI.

"Facebook claimed 5x ROAS but after refunds and multi-touch deduping, it was 1.8x. Google was the real winner at 4.2x. We cut Facebook 60% and scaled Google."

Kevin Tran

Performance Marketing Manager, Athletic Apparel Direct

$84K annual wasted spend eliminated

True ROAS improved from 2.1x to 3.8x

Start Your Shopify Ad Spend Reality (Blended ROAS/CAC)

Connect your Shopify account and generate your first reconciliation in under 5 minutes. First report free.

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