Start with business-model and traffic fit
Before you apply to an affiliate network, confirm that its commercial model matches how you actually generate value. Networks and programs may emphasize different actions, such as clicks, leads, sales or other outcomes, and a directory listing or category label should not be treated as proof that the model is right for your audience. Blue Book PartnerIndex, for example, defines CPC networks and distinguishes a maintained directory of active networks from a ranking, which is a useful reminder to verify the model and terms yourself rather than relying on inclusion alone. 1
Map the network’s accepted traffic sources against your real channels: editorial SEO, email, paid search, paid social, display, coupon, loyalty, browser extensions, comparison content, influencer posts, video, communities or subnetworks. A good fit is not just “does the network have offers?” but “are my channels allowed, measurable and commercially valued?” If your strongest traffic type is tolerated only with restrictions, ask for the rules in writing before investing onboarding time. 1
Check eligible GEOs, languages and audience intent at the offer level, not only at network level. A network can appear relevant because it covers your vertical, while individual advertisers may restrict countries, promotional methods or link placements. Treat unclear GEO eligibility, vague channel permissions or “ask your manager later” answers as operational risk rather than as a reason to assume approval will follow. 1
Also compare the commission model with your cash-flow and content strategy. CPC may suit high-intent comparison or discovery traffic, while CPA or revenue-share models may depend more heavily on conversion quality, return windows and advertiser validation. This guide is not legal, tax or financial advice; it is a practical framework for checking whether the available model, traffic rules and expected workflow are consistent with your business. 1
Read the commercial terms before you apply
The contract and program terms are the binding materials to scrutinize. Voluntary industry codes can be helpful benchmarks, but they do not replace signed terms. The APMA Advertiser Payments Code of Conduct is expressly focused on payment governance, clear processes and responsibilities among advertisers, agencies, networks and publishers, while not replacing contracts. Use such codes to frame questions, not as a substitute for the agreement you will actually sign. 1
Look for the commission definition, the event that triggers commission, and the conditions that can reverse or reduce it. Common areas to clarify include cancellations, returns, duplicate orders, invalid leads, policy breaches, self-referrals, voucher misuse and advertiser-side validation. The key due-diligence point is not to demand that reversals never happen, but to understand the evidence, timing and appeal route when they do. 1
Pay close attention to locking periods and validation timelines. If commissions remain pending until an advertiser approves them, ask when that review occurs, what data will be visible to you, and whether late reversals are possible. A red flag is a process where commissions can be removed with no stated reason, no record, no timing discipline and no escalation path. 1
Payment terms deserve the same attention as headline commission rates. Check minimum payout thresholds, payment schedule, currency, bank or platform fees, tax documentation, invoicing requirements and whether payments depend on advertiser funding. The APMA payment governance code is voluntary, but its focus on clear responsibilities is a useful prompt: you should know who pays you, when, from what balance, under which invoice or self-billing process, and what happens if an advertiser pays late. 1
Interrogate tracking, attribution and reporting
Tracking is the evidence layer of affiliate marketing, so do not treat it as a technical afterthought. Ask what tracking methods are used, such as cookies, pixels, scripts, server-to-server integrations or link decoration, and how they behave across browsers, devices and consent states. The ICO’s guidance on storage and access technologies covers cookies, tracking pixels, link decoration, scripts and similar technologies, including transparency, consent, records and online advertising requirements. 1
Confirm the attribution window and attribution logic for each program. You need to know the click-to-conversion window, whether last-click or another rule applies, whether voucher, loyalty or remarketing partners can overwrite prior referrals, and how direct-to-advertiser or cross-device journeys are treated. The APMA draft Subnetwork Code highlights transparent attribution as a voluntary standard, but it does not replace contractual duties; therefore, seek program-specific terms and reporting evidence. 1
Cross-device support should be described precisely, not assumed. Ask whether a user who clicks on mobile and purchases on desktop can be recognized, what identifiers are used, whether login-based matching is available, and what happens when consent is absent or identifiers are unavailable. Avoid relying on generic claims such as “industry-leading tracking” unless the network can explain the method, limitations and reporting fields relevant to your traffic. 1 2
Reporting exports matter because they let you reconcile your own analytics with network records. Ask whether you can export click IDs, timestamps, order references where permitted, status changes, reversal reasons, advertiser names, sub-publisher identifiers if relevant, and payment status. A practical red flag is a dashboard that shows only aggregate earnings without enough transaction-level detail to investigate tracking gaps, disputes or unusual reversal patterns. 1 2
Check compliance, disclosures and data use
Affiliate disclosure is a core compliance issue, not a cosmetic footer. FTC staff guidance says affiliate relationships should be disclosed clearly and conspicuously near recommendations, and that vague labels may not communicate the financial relationship. If your content includes recommendations, reviews, rankings or creator endorsements, check whether the network and advertisers provide disclosure requirements that are compatible with clear, nearby disclosures. 1
In the UK advertising context, CAP guidance explains that affiliate content can be advertising, that both businesses and affiliates can be responsible, and that relevant content and links should be obviously identifiable before engagement. This means publishers and creators should understand which pages, posts, emails, videos or social placements are treated as affiliate advertising and how disclosure should appear before the user engages with the commercial link. 1
Cookie, pixel and tracking responsibilities should be addressed before launch. ICO guidance covers transparency, consent, records and online advertising requirements for storage and access technologies, including cookies, tracking pixels, scripts and link decoration. Ask who provides the consent language, who controls tags, what data is collected, how records are kept, and whether you need to update your own privacy or cookie notices. 1
Distinguish official regulatory guidance from voluntary or draft industry standards. FTC, CAP and ICO materials are official guidance from regulators or regulatory bodies in their respective contexts; APMA codes are industry standards, with the payment code voluntary and the subnetwork code described as draft and voluntary. None of these materials should be treated as personalized legal advice, but they provide useful evidence for the questions you should ask. 1 2 3 4
Evaluate operational quality and warning signs
Operational quality shows up in how clearly the network explains approvals, rules, payment flow, tracking and dispute handling. A polished marketplace is useful, but your due diligence should focus on whether support can answer specific questions and whether written policies match dashboard behavior. Clear payment governance and defined responsibilities are recurring themes in voluntary industry guidance, and they are practical indicators of a mature operating process. 1
Ask how the network handles fraud rules and traffic quality enforcement. Legitimate networks need controls against invalid activity, misleading promotion, non-compliant traffic and attribution abuse. The risk for publishers is not the existence of fraud rules; it is vague enforcement where accounts can be penalized without clear policy, evidence, notice or review. The APMA draft subnetwork standard highlights partner due diligence, risk management and protection of compliant publishers as voluntary principles rather than contract substitutes. 1
Subnetwork transparency is especially important if you operate as, use, or compete with sub-affiliate partners. Ask whether sub-publisher IDs are required, whether advertisers can see sources, how approvals flow down, and how compliant publishers are protected if another partner in a chain creates risk. The draft APMA subnetwork code is not binding unless incorporated into terms, but it usefully flags due diligence, transparent attribution and risk management as topics to cover. 1
Concrete red flags include refusal to share core terms before application, unclear payment responsibility, unexplained reversals, no visible attribution rules, no exportable reporting, vague disclosure guidance, unsupported tracking claims, pressure to use non-transparent promotional methods, or support that will not put material answers in writing. These signs do not prove misconduct by any company, but they justify slowing down, asking follow-up questions or choosing a better-documented option. 1 2 3 4
Questions to ask before joining
Business fit: Which commission models are available by program? Which channels are allowed or restricted: SEO content, email, paid search, paid social, influencers, coupon, loyalty, comparison, communities or subnetworks? Which GEOs and languages are eligible? Are channel and GEO approvals granted at network level, advertiser level or both? 1
Commercial terms: What exactly triggers a commission? What are the reversal reasons, validation process and locking period? Can commissions be reversed after locking, and if so under what written rule? What is the payment threshold, payment schedule, currency, invoicing process and tax documentation requirement? Who is responsible for paying the publisher if advertiser funding is delayed? 1
Tracking and attribution: What tracking technologies are used? What is the attribution window and rule? Is cross-device tracking supported, and with what limitations? What happens when cookies, pixels, scripts or link decoration are blocked or consent is not given? Can I export transaction-level reports with click IDs, timestamps, status changes, reversal reasons and payment status? 1 2
Compliance and operations: What affiliate disclosure wording or placement does the network expect, and is it compatible with clear and conspicuous disclosure near recommendations? Who is responsible for cookie or tracking transparency and consent? How are fraud reviews handled? What is the escalation path for tracking disputes, payment issues and account enforcement? If subnetworks are involved, what source transparency and risk controls apply? 1 2 3 4