How to Audit an Affiliate Marketing Programme: A Complete UK Guide

An affiliate programme audit is a structured review of a brand’s affiliate marketing activity, designed to identify tracking problems, wasted expenditure, underperforming publishers, compliance risks and opportunities for profitable growth.

A comprehensive audit should examine more than revenue and commission. It should establish whether the programme is attracting valuable customers, whether partners are genuinely contributing to sales and whether the commercial model supports sustainable growth.

For brands already investing in affiliate marketing, an audit can be one of the most effective ways to identify improvements before increasing budgets.

This guide provides a practical 12-step framework for reviewing an existing affiliate programme, including the data to examine, warning signs to investigate and actions to prioritise.

Why should you audit your affiliate programme?

Affiliate programmes can continue generating revenue even when significant underlying problems exist.

A programme might report increasing sales while simultaneously experiencing:

Growing reliance on a small number of voucher or cashback partners.
Commission payments on transactions that would likely have occurred anyway.
Inaccurate tracking or duplicated attribution.
Limited recruitment of new publishers.
High numbers of inactive affiliates.
Uncompetitive or poorly structured commission rates.
Unauthorised promotional activity.
Increasing costs without corresponding improvements in customer acquisition.

A structured audit helps distinguish reported affiliate performance from actual commercial contribution.

It should answer three fundamental questions:

Is the programme measuring performance accurately?
Are existing partnerships delivering commercially valuable results?
What changes would produce the greatest improvement?

The 12-step affiliate programme audit checklist

Step	Audit area	Primary objective
1	Business objectives and KPIs	Establish what success means
2	Tracking accuracy	Confirm conversions are recorded correctly
3	Attribution and incrementality	Understand genuine channel contribution
4	Publisher mix	Identify concentration and diversification risks
5	Publisher activation	Assess productive partner participation
6	Recruitment strategy	Evaluate new partnership development
7	Commission structure	Improve commercial efficiency
8	Programme profitability	Understand total acquisition costs
9	Compliance and brand protection	Identify unauthorised or risky activity
10	Network and technology	Review platform suitability
11	Competitor benchmarking	Identify market opportunities
12	Management and reporting	Assess operational effectiveness

Each area should produce a clear finding, supporting evidence and recommended action.

1. Review business objectives and KPIs

Begin by establishing what the affiliate programme is expected to achieve.

Common objectives include increasing online revenue, acquiring new customers, expanding internationally, developing creator partnerships or reducing dependence on paid advertising.

However, these objectives require different strategies.

A brand focused on new customer acquisition may prioritise different publishers from a business seeking to improve conversion rates among existing customers.

What to review

Revenue and order targets.
New customer acquisition objectives.
Average order value.
Gross margin and contribution margin.
Customer acquisition costs.
Market expansion priorities.
Existing channel reporting.
Current publisher recruitment and activation targets.

Warning signs

The programme has revenue targets but no clear definition of customer quality, profitability or incremental contribution.

Recommended action

Create a KPI framework that connects affiliate activity to wider business objectives.

Avoid measuring the programme solely by tracked revenue.

2. Audit affiliate tracking accuracy

Tracking accuracy is fundamental. If conversions are missing, duplicated or attributed incorrectly, subsequent analysis becomes unreliable.

Review the tracking integration between the website, affiliate platform, consent management system and analytics tools.

What to check

Affiliate clicks and conversion events are recorded correctly.
Order values exclude inappropriate elements, such as VAT or delivery charges, where required by programme terms.
Voucher codes and commission groups function as intended.
Returns and cancellations are handled correctly.
Mobile and desktop purchase journeys are tested.
Consent settings are implemented appropriately.
Cross-channel deduplication rules are understood.
Tracking continues to work following website updates.

Run controlled test purchases through the affiliate platform and compare the resulting transaction records with actual order data.

Awin, for example, documents a tracking diagnosis process that can identify missing transactions and implementation warnings.

Source: Awin — Test Your Programme’s Tracking.

Warning signs

Affiliate-reported transactions differ materially from internal order records without a clear explanation.

Recommended action

Resolve tracking defects before evaluating publisher profitability or increasing investment.

3. Review attribution and incrementality

One of the most important questions in affiliate marketing is whether partners are generating additional commercial value.

A publisher receiving commission for a transaction does not necessarily mean that publisher created the customer’s demand.

For example, a customer might discover a product through an influencer, visit the brand directly several times and then search for a discount code immediately before purchasing.

Depending on the programme’s attribution rules, the final voucher interaction could receive the affiliate commission.

That doesn’t automatically make the voucher partner worthless. However, it does mean last-click reporting alone cannot establish its incremental contribution.

What to analyse

First-touch and last-touch interactions.
New versus returning customer ratios.
Time between affiliate click and purchase.
Publisher involvement earlier in the customer journey.
Branded search and voucher-related behaviour.
Overlap with PPC, email and direct traffic.
Customer retention and repeat purchase performance.
Results from controlled incrementality experiments, where feasible.

Warning signs

A substantial proportion of affiliate revenue comes from partners appearing only immediately before checkout, with little evidence of additional demand creation.

Recommended action

Segment publishers by their likely role in the customer journey and test incrementality rather than assuming every tracked transaction is incremental.

For example, a carefully designed holdout or geographic test may help estimate whether particular partner activity produces additional orders.

Attribution reports provide useful evidence, but they are not a substitute for causal measurement.

4. Analyse the publisher mix

A healthy affiliate programme should have a partner mix aligned with its commercial objectives.

That does not mean every brand needs the same percentage of editorial, cashback, loyalty or influencer activity.

The appropriate mix depends on the business model, product category, audience and acquisition strategy.

Example publisher segmentation

Publisher category	Potential contribution	Main audit question
Editorial and content	Product discovery and recommendations	Are partners reaching relevant new audiences?
Influencers and creators	Awareness, product education and conversions	Is activity commercially measurable?
Cashback	Incentivised purchases	Does the activity generate additional value?
Voucher and discount	Conversion support	Are commissions justified by incremental contribution?
Loyalty and closed user groups	Access to defined audiences	Are customer quality and costs acceptable?
Comparison websites	Purchase research and consideration	Are partners attracting qualified demand?
Technology partners	Conversion or customer journey support	Is the solution delivering measurable uplift?

Warning signs

A small number of publishers account for most of the programme’s revenue, particularly where their value beyond conversion-stage attribution is unclear.

Recommended action

Identify overreliance on individual partners and develop a recruitment strategy that broadens the programme’s commercial contribution.

5. Measure publisher activation

A programme with 500 approved affiliates may appear well established.

But if only 25 have generated meaningful activity in the past 90 days, the size of the approved publisher base provides limited insight into programme health.

Calculate the proportion of approved publishers that are actively contributing.

Publisher activation rate = Active publishers ÷ Approved publishers × 100

For example:

Approved publishers: 500
Active publishers: 50
Activation rate: 10%

The definition of active should be explicit. It could mean generating qualified clicks, publishing agreed content or producing validated transactions.

What to review

Approved publishers.
Active publishers over 30, 60 and 90 days.
Publishers generating clicks but no sales.
Recently recruited partners yet to activate.
Dormant partners with previous sales.
Response and activation rates by publisher category.

Recommended action

Segment inactive publishers into those worth reactivating, those requiring support and those no longer relevant to the programme.

6. Evaluate publisher recruitment

Affiliate programmes rarely achieve sustained growth through optimisation alone.

New publisher recruitment is essential for expanding audience reach, replacing inactive partners and reducing concentration risk.

An audit should establish whether recruitment is proactive, relevant and commercially productive.

Questions to ask

Is there a documented recruitment strategy?
Are prospective partners segmented by audience and publisher type?
How many relevant partners are contacted each month?
What percentage respond positively?
How many approved partners become active?
Are competitors securing placements with publishers the brand has not approached?
Is recruitment focused on quality or simply application volume?

Recommended action

Create a recruitment pipeline that measures progression from identification through to commercial activation.

Track:

Identified → Contacted → Responded → Approved → Activated → Revenue-generating

This helps identify where recruitment is underperforming.

For more information, explore AMA’s affiliate agency directory to compare agencies with publisher recruitment capabilities.

7. Review commission rates and incentives

Commission structures should reflect product margins, customer value, publisher contribution and competitive conditions.

A flat commission rate across every publisher may be simple to manage, but it can create commercial inefficiencies.

For example, an editorial partner investing in original product content may require a different incentive structure from a publisher primarily distributing an existing discount code.

What to review

Standard commission rates.
New versus existing customer rates.
Product-level commission differences.
Publisher-specific commercial agreements.
Fixed-fee placements.
Commission validation rules.
Tenancy or exposure costs.
Incentives for newly recruited partners.

Warning signs

High-value acquisition partners receive insufficient incentives, while low-incrementality activity attracts disproportionately generous commissions.

Recommended action

Consider differentiated commission structures supported by commercial evidence and transparent partner agreements.

Read AMA’s affiliate agency pricing guide for a broader explanation of management and programme costs.

8. Calculate the programme’s true profitability

Affiliate revenue alone is not a measure of profitability.

A programme’s total cost may include publisher commissions, network fees, agency management charges, fixed placements, creator gifting and internal operating costs.

Illustrative example

Metric	Monthly amount
Validated affiliate revenue (excluding VAT)	£100,000
Publisher commissions	£8,000
Network fees	£2,000
Agency management	£2,500
Fixed placements	£1,500
Total programme costs	£14,000

In this example:

Programme cost of sale = £14,000 ÷ £100,000 × 100 = 14%

That represents £7.14 in tracked revenue for every £1 of programme expenditure.

However, this is not the same as incremental return or net profit.

If product gross margins are low, a 14% programme cost of sale may be difficult to sustain. A high-margin business could have a very different commercial assessment.

Recommended action

Compare total programme costs against contribution margin, customer acquisition value and estimated incremental revenue.

Avoid using ROAS alone as the final measure of success.

The figures above are illustrative, not industry benchmarks.

9. Check affiliate compliance and brand protection

Affiliate programmes expose brands to potential compliance risks, particularly where promotional activity is distributed across numerous third parties.

Relevant concerns include:

Unauthorised brand bidding.
Misleading voucher or discount claims.
Unapproved promotional messaging.
Cookie stuffing or deceptive tracking.
Inappropriate traffic sources.
Misrepresentation of product benefits.
Undisclosed advertising relationships.
Activity that breaches publisher agreements.

Awin’s compliance documentation describes partner screening, monitoring and advertiser controls designed to reduce these risks.

Source: Awin — Compliance Partner Checks.

Recommended action

Review publisher terms, monitor promotional activity and document procedures for investigating suspicious transactions or partner behaviour.

For UK campaigns, also consider relevant advertising disclosure, consumer protection and data protection requirements.

10. Assess the affiliate network and technology

An established programme may continue using its original network long after its requirements have changed.

That doesn’t necessarily mean the network should be replaced.

However, an audit should establish whether the current technology remains suitable.

Areas to assess

Tracking reliability.
Reporting flexibility.
Publisher discovery capabilities.
Commission rules.
International support.
Integration with ecommerce or CRM systems.
Data access and export options.
Network fees.
Technical support.
Contractual and migration considerations.

A network migration can create operational disruption, so the benefits should be evaluated carefully.

Compare major platforms in AMA’s affiliate networks guide.

11. Benchmark against competitors

Competitor analysis helps identify partnership opportunities and market expectations.

However, it should focus on observable evidence rather than assumed competitor performance.

What to investigate

Which publishers feature competing brands?
Which editorial publications cover competitors?
Are competitors active with relevant creators?
What publicly advertised affiliate commissions are available?
Which loyalty or closed user group partnerships are visible?
Are competitors securing placements in seasonal buying guides?
Are there emerging publisher categories the brand has overlooked?

Recommended action

Build a competitor publisher-gap analysis.

Identify relevant partners featuring competitors but not your brand, then prioritise outreach according to audience fit and commercial potential.

Do not treat a competitor’s visible presence as proof that its partnership is profitable.

12. Review programme management and reporting

The final audit area is operational delivery.

Even a well-structured programme can stagnate without consistent recruitment, communication, commercial planning and performance analysis.

Questions to ask

Is there a clear monthly activity plan?
Are recruitment and activation targets documented?
Are publisher relationships actively managed?
Are commission validations completed promptly?
Are performance reports commercially meaningful?
Are there regular strategy reviews?
Are actions and responsibilities clearly assigned?
Is the programme developing beyond existing revenue sources?

Recommended action

Establish a regular management framework with agreed KPIs, recruitment activity, commercial priorities and performance reviews.

Reports should explain what happened, why it happened and what will change as a result.

How to score your affiliate programme audit

To make the findings actionable, assign each of the 12 areas a score from 0 to 3.

Score	Assessment	Meaning
0	Critical	Material issue or no reliable evidence
1	Needs improvement	Significant weaknesses
2	Adequate	Functional, with identifiable improvements
3	Strong	Well-managed and supported by evidence

The maximum possible score is 36.

This is an AMA diagnostic framework, not a validated industry benchmark. Scores should help prioritise investigation rather than serve as a universal measure of programme quality.

A tracking failure or serious compliance issue should always be addressed urgently, regardless of the overall score.

Turning audit findings into a 90-day action plan

An audit only creates value when its findings translate into improvements.

A practical implementation plan could follow three phases.

Days 1–30: Correct foundational problems

Prioritise tracking, attribution, compliance, commission errors and reporting gaps.

Establish a reliable performance baseline.

Days 31–60: Improve existing partnerships

Review the publisher mix, reactivate relevant partners, adjust commercial incentives and begin targeted recruitment.

Days 61–90: Develop new growth opportunities

Expand recruitment, test new publisher categories, improve content and creator partnerships, and assess early performance against agreed KPIs.

Each recommendation should have an owner, deadline and measurable outcome.

When should you commission an external affiliate programme audit?

An external audit may be useful when:

Affiliate revenue has plateaued.
Programme costs are rising faster than commercial contribution.
The brand is considering changing agencies or networks.
Publisher recruitment has slowed.
Management lacks confidence in tracking or attribution.
The programme is overly reliant on voucher or cashback partners.
The business wants to expand into new markets.
Internal teams lack the specialist resources to conduct a detailed review.

An external review can introduce additional expertise and a different perspective, although the quality of the findings depends on the auditor’s experience and access to reliable data.

Frequently asked questions

What is an affiliate programme audit?

An affiliate programme audit is a structured assessment of an advertiser’s affiliate channel, covering tracking, publishers, commissions, costs, compliance, management and growth opportunities.

How often should an affiliate programme be audited?

Operational checks should take place continuously. A broader strategic review every six to twelve months may be appropriate for established programmes, with additional audits following major business, tracking or management changes.

How long does an affiliate programme audit take?

The timeframe depends on programme size, data availability, technical complexity and audit scope. A focused review may take several working days, while a complex multi-market programme can require substantially longer.

Can an affiliate audit identify wasted commission?

Yes. It may reveal incorrect commission rules, invalid transactions, duplicated attribution, inappropriate incentives or publishers whose commercial value requires further investigation. Determining genuine incrementality may require additional testing.

Should an affiliate programme audit include competitors?

Yes, where relevant. Competitor benchmarking can reveal recruitment gaps, visible partnership strategies and market opportunities, although public information rarely establishes competitors’ actual commercial results.

Do I need to change affiliate networks after an audit?

Not necessarily. Many performance issues can be addressed through better management, tracking configuration or publisher recruitment without migrating to another platform.

Find the right agency to improve your affiliate programme

An effective affiliate programme audit should deliver more than a list of problems.

It should establish which changes are most likely to improve commercial performance, reduce unnecessary expenditure and create sustainable partnership growth.

For brands considering specialist support, AMA provides resources to help evaluate potential agency partners.

Published: 16 October 2026.

Editorial note: This article provides a practical evaluation framework for affiliate programmes. Examples and scoring models are illustrative and should be adapted to individual business circumstances.