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Module 2 · 16 min

Build the business case

Decide whether the channel fits your economics, customers and growth goals.

By the end you'll be able to: Draft a realistic business case using contribution margin, target outcomes and total channel cost.
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Visual guide

Where a $100 order goes

  • Product cost: $45
  • Partner commission: $10
  • Platform fee (1%): $1
  • Your profit: $44
Commission is a cost of acquiring a customer. Keep it below what you can afford after product costs.

1. Start with the business outcome

Define the result the company needs before choosing partners or a platform. Common goals include profitable new-customer sales, qualified leads, entry into a new audience or stronger consideration content.

  • Use one primary outcome for launch.
  • Separate revenue from profitable revenue.
  • Define what counts as a new customer before reporting begins.

2. Know what one result can cost

Work backward from revenue, gross margin, expected returns and other variable costs. The room left is not automatically the commission rate: it must also cover platform, agency, placement and internal operating costs.

  • Model total channel cost, not commission alone.
  • Use category-specific economics rather than a universal benchmark.
  • Create scenarios for average order value and return rate.

3. Recognize when affiliate is a weak fit

The channel may struggle when conversion is poor, tracking is unreliable, margins cannot support partner value, or the offer has no clear reason for a partner to recommend it.

  • Fix the customer journey before recruiting at scale.
  • Confirm legal and brand restrictions early.
  • Partners need both an audience fit and an economic reason to participate.

Manager checklist

  • Define the payable result.
  • Calculate a contribution-margin range.
  • List launch costs beyond commission.
  • Agree how new customers and cancellations will be measured.
Worked example

Commission headroom

On a $120 order with $54 of contribution before marketing, a manager tests 8%, 12% and 16% commission scenarios. They then add expected network, management and placement costs. The right decision comes from the resulting contribution—not from whichever percentage looks most competitive.

Common mistake

Using a competitor's commission rate as your budget. Their margins, repeat purchase rate, attribution rules and fees may be completely different.

Knowledge check

Which number is most useful when setting an affordable commission?

Key terms

Break-even CPA
The highest you can pay per sale before losing money.
CAC — Customer Acquisition Cost
What it costs on average to win one new customer.
LTV / CLV — Lifetime Value / Customer Lifetime Value
Total revenue (or profit) a customer brings over their whole relationship with you.
Network override / Network fee
A percentage the network adds on top of each commission you pay.
Full glossary →
Run it on AFFN

Put this into practice

AFFN builds your private affiliate platform for $0 setup and $0 monthly — you pay 1% of approved partner sales.