Affiliate Commission Calculator UK

UK Affiliate Commission Rates by Niche — 2025

Use these benchmarks to understand what commission you can expect from UK affiliate programmes across different industries.

UK Affiliate Marketing Guide 2025: How to Maximise Your Commission Earnings

What Is Affiliate Marketing and How Does It Work?

Affiliate marketing is a performance-based revenue model where publishers (affiliates) earn a commission for driving valuable actions for merchants — typically sales, leads, or signups. In the UK, affiliate marketing generated approximately £1.3 billion in publisher commissions in 2024, making it one of the country's most significant digital revenue channels.

The mechanics are straightforward: you join a merchant's affiliate programme (either directly or through a network), receive a unique tracking link, and earn a commission whenever someone clicks that link and completes the target action within the cookie window. The merchant's tracking system records the referral, attributes the conversion to your link, and your commission accrues in your publisher account.

CPA vs CPL vs Revenue Share: Which Model Is Right for You?

Cost Per Acquisition (CPA) pays a flat fee for each completed sale or customer acquisition. For example, an energy switching affiliate might pay £75 every time a visitor you referred completes a tariff switch. CPA is predictable and straightforward — you know exactly what each conversion is worth, regardless of the customer's actual spend. This model suits affiliates in high-intent niches like financial services, utilities, and online gambling, where merchants have well-established customer lifetime values.

Cost Per Lead (CPL) pays a flat fee for generating a qualified lead — typically someone who completes a form, requests a callback, or registers for a service. CPL rates for insurance quotes and mortgage enquiries commonly range from £5 to £50 per lead. This model is particularly common in regulated financial services where the actual sale requires direct human interaction. CPL is easier to generate than a completed sale, but rates per conversion are lower.

Revenue Share pays a percentage of the referred customer's spend. In eCommerce this is typically 2–10% of the order value; in SaaS products you may earn 20–40% of every subscription payment the customer makes, month after month. Revenue share aligns your incentives with the merchant's long-term success and can build a compounding recurring income stream. Software affiliates with SaaS revenue share arrangements often report that a modest number of referred customers generates significant monthly passive income within 12–18 months.

Top UK Affiliate Networks

Awin is the UK's largest affiliate network, home to over 21,000 advertiser programmes spanning retail, finance, travel, and telecoms. It is particularly strong for mainstream retail brands including John Lewis, M&S, and major financial services providers. Publisher payments are made on a NET30 basis.

CJ Affiliate (Commission Junction) is a leading global network with a strong UK presence, particularly in technology, software, and financial services. It offers advanced reporting tools and is popular with data-driven publishers.

Rakuten Advertising focuses on premium retail and luxury brands and is the preferred network for many major department stores and fashion retailers.

ShareASale has a strong portfolio of small and mid-size merchants, particularly in home, garden, and specialist retail. It is popular with niche content publishers.

Impact Radius is increasingly preferred by technology companies and SaaS brands. Its partnership management platform provides more sophisticated tracking and attribution than traditional CPA networks.

UK Affiliate Disclosure Rules (ASA)

UK affiliates must comply with the Advertising Standards Authority (ASA) and the CAP Code. Any content that includes affiliate links where you receive a commission must be clearly identified as advertising. The disclosure must be prominent and appear before the consumer engages with the content — not buried in footers or "about" pages. Acceptable disclosures include "AD", "Affiliate link", or "This post contains affiliate links — I earn a commission if you buy through these links". Failure to disclose can result in ASA rulings, reputational damage, and potential breaches of consumer protection law.

Tax on UK Affiliate Income: Self Assessment

Affiliate marketing income is treated as trading income in the UK. If your gross affiliate earnings exceed £1,000 in a tax year, you must register for Self Assessment with HMRC and complete a tax return. You will pay income tax on your net profit (earnings minus allowable business expenses). Allowable expenses include domain and hosting costs, software subscriptions, content creation costs (photography, copywriting), a reasonable proportion of home office costs, and professional development.

Keep clear records of all commissions received and expenses incurred. Many UK affiliates operate through a limited company once earnings exceed approximately £30,000–£40,000 per year, as the combination of corporation tax (19–25%) plus dividends can be more tax-efficient than income tax rates of 40–45% at higher earning levels. Always consult a qualified accountant for advice tailored to your circumstances.

Best Niches for UK Affiliates

The highest-earning UK affiliates tend to focus on high-value financial products and services. Mortgage comparison, life insurance, income protection, and business loans consistently command the highest CPAs in the UK market. Energy switching has been lucrative in recent years due to significant consumer demand. SaaS and B2B software offers the best passive income potential given recurring revenue share structures. Health, fitness, and wellness have grown substantially and support revenue share models with repeat purchase potential.

Understanding Cookie Windows

The cookie window (also called the referral period or tracking period) determines how long after a click you remain eligible to earn a commission. A 30-day cookie means if your referred visitor makes a purchase within 30 days of clicking your link, you earn the commission. Longer cookies are generally more valuable. SaaS products and financial services often offer 60–120 day cookies due to longer decision cycles. Some programmes use first-click attribution, others use last-click — understanding attribution models is important for choosing which programmes to prioritise.