WHITEPAPER • Growth & Partnerships

Affiliates & Google Ads
How to scale sales with minimal risk

A practical guide for online stores that want to combine their own Google Ads campaigns with affiliate programs where partners run Search & Shopping Ads.

EnglishVersion 1.0Prepared by: Ad Mastermind

Table of Contents

Visual Flow • Own vs. affiliate traffic (Google Ads)

The diagram highlights how your campaigns and affiliates capture demand and where cannibalization can appear.

Intent-based search product / category Your campaigns Search • Shopping • PMax Affiliate campaigns Search • Shopping Competitors other retailers Controlled traffic your data & ROAS Incremental traffic pay on sale Lost to competitors missed opportunities Outcome of your campaigns (control & data) Outcome of affiliate campaigns (incremental, commission) Traffic lost to competitors
Insight: allow affiliates on non-brand and limit brand-bidding → maximize incrementality and reduce cannibalization.

Framework & Policies — at a glance

Allow

  • Non‑brand Search + non‑brand Shopping.
  • Affiliate Display/YouTube for awareness.
  • Approved promos, brand‑aligned messaging.

Tolerate with limits

  • Brand + category → reduced commission.
  • Shopping on brand → written approval only.
  • Capped budgets/CPCs on brand.

Prohibit

  • Exact‑match bidding on brand without approval.
  • False or unapproved promotions.
  • Remarketing using your first‑party lists.
When to say NO: heavy brand cannibalization, rising CPC in your account, excellent in‑house ROAS (commission erodes margin), policy violations.

KPIs & Measurement

Incremental Sales %

Definition: sales driven by affiliates that do NOT appear in your campaigns on the same terms/segments.

  • Method: geo or time tests (affiliate on/off).
  • Signals: Search Term overlap & Auction Insights.

Blended CAC / ROAS

Compute total ROAS (your Ads + affiliate commissions) vs. margin target.

  • Include commissions, coupons, shipping, returns.
  • Analyze brand vs. non‑brand separately.

New‑to‑Brand Rate

Share of new customers delivered by affiliates.

  • Sources: GA4, CRM, RFM tagging.

Time‑to‑Scale

How fast volumes grow with affiliates vs. without in peak periods.

Implementation Checklists

Quick setup

  • Define T&Cs: what’s allowed/forbidden in Ads.
  • Set different commissions: brand & non‑brand.
  • Enable correct tracking (GA4 + affiliate platform).
  • Whitelist affiliates for Shopping if needed.
  • Order validation process & return‑rate cap.

Monitoring

  • Weekly report: Auction Insights overlap.
  • Search Terms: brand leakage & coupon hunting.
  • QBR with top‑10 affiliates: angles & test plan.
  • Creative audit: copy, extensions, feed titles.

FAQ — frequently asked questions

Do I pay “twice” if an affiliate bids on the same terms as me?

You don’t pay twice for the same click, but there’s a risk of commissions on inevitable sales (brand). Solution: brand‑bidding rules and differentiated commissions.

Are affiliate‑run Shopping Ads worth it?

Yes, on non‑brand or long‑tail where incrementality is real. On brand, only with approval and reduced commission.

What happens on Black Friday?

Let affiliates scale on non‑brand and long‑tail; keep control on brand & best‑sellers in your own account.

Appendix: Terms & Conditions Template

EN — Key Clauses

  • Exact‑match bidding on brand terms is prohibited.
  • Google Ads allowed on non‑brand only; exceptions require written approval.
  • Commission: brand 1–2%; non‑brand 5–10% (example).
  • All promotions and claims must be pre‑approved.
  • Violations may result in commission forfeiture.
EN • Guide for online stores

Why you should allow affiliates to run Google Ads for your store

Done right, this strategy delivers incremental traffic, new customers, and fast scaling with limited financial risk. The key is enforcing clear policies and monitoring.

Benefits

When it gets risky

Conclusion

Allowing affiliates to run Google Ads expands your reach, brings new customers, and scales efficiently — provided you enforce clear rules and active monitoring.