Affiliate marketing: what it is, what it pays and why it runs on SEO

Affiliate marketing is one of the few advertising models in which a brand only pays when it sells. A website, creator or publisher recommends a product with a tracked link and earns a commission on every purchase that comes through it. It is the engine behind many of the reviews, comparisons and "best X of 2026" pages that rank on Google.

This guide explains how affiliate marketing works, what Amazon, Mercado Libre and Hotmart pay today according to their own tables, how much it is searched for in Latin America and why, in practice, an affiliate site is an SEO and backlink business.

What is affiliate marketing and how does it work

There are four players:

• The advertiser, who sells the product (Amazon, Mercado Libre, an airline, a software company).
• The affiliate, who recommends it on a website, channel or newsletter.
• The network or program, which issues the tracked link and records the sales.
• The customer, who clicks, buys and pays nothing extra.

The link stores a cookie in the customer's browser. If the purchase happens within the attribution window set by the program, the sale is credited to the affiliate, who gets a percentage or a fixed amount. Some programs pay per sale (CPA), others per sign-up or app install.

The three most common payment models are a percentage of the sale (Amazon or Mercado Libre), a fixed amount per action (for example, per account opened at a digital bank or per free software trial) and recurring revenue share, where the affiliate earns every month while the customer keeps paying for a subscription. For the brand the advantage is clear: acquisition cost is known in advance and nobody pays for impressions that do not sell.

Types of affiliate marketing

Not all affiliates work the same way, and the difference matters for a brand that wants to open its own program:

• Content sites. Reviews, comparisons and buying guides that live on Google traffic. They are the most stable, because a well-ranked article sells for years.
• Social media creators. Instagram, TikTok and YouTube. They sell fast when they post, but the effect lasts as long as the post does.
• Coupon and deal sites. They catch customers right before checkout. Many brands limit them because they claim sales that would have happened anyway.
• Paid-traffic affiliates. They buy search or social ads and keep the difference with the commission. It only works with high commissions.
• Publishers and newsletters. Newspapers and magazines that add recommendation sections with affiliate links, a business that is growing in the United States and starting to appear in Latin America.

What affiliate programs pay in 2026

Commissions change by category and by country, and programs can change them at will. These are the figures the companies themselves publish today.

Amazon Associates

The official Amazon Associates fee table for Amazon.com sets commissions from 0% to 10%. The highest is Luxury Beauty; the lowest are grocery, health and consoles.

Category	Commission
Luxury Beauty and Amazon Explore	10.0%
Digital music and video, Handmade	5.0%
Physical books, kitchen, automotive	4.5%
Fashion, jewelry, watches, Kindle and Echo devices	4.0%
Toys, furniture, home, sports, pets, beauty	3.0%
PC and components, DVD and Blu-Ray	2.5%
TVs and digital video games	2.0%
Grocery, health and consoles	1.0%
Gift cards, alcohol, vehicles	0.0%
All other categories	4.0%

Source: Amazon Associates, standard commission table checked on November 9, 2026

Mercado Libre and Hotmart

In Latin America, the two most searched programs are Mercado Libre's and Hotmart's, the digital products platform. Mercado Libre said in March 2026 that its affiliates and creators program in Argentina pays up to 15% depending on the category, that the program's active base grew more than fourfold across the region in 2025 and that sales generated by affiliates in Argentina rose more than 800% between the third and fourth quarters of 2025. On Hotmart, each producer sets the affiliate commission; the platform charges its own fee, which according to its pricing page starts at 9.9% plus a fixed amount per sale.

up to 15%Top commission in Argentina

4xGrowth of the active base in 2025 (region)

+800%Affiliate sales growth in Argentina, Q3 to Q4 2025

Source: Mercado Libre via Mercado, March 11, 2026

View the data as a table

Top commission in Argentina	up to 15%
Growth of the active base in 2025 (region)	4x
Affiliate sales growth in Argentina, Q3 to Q4 2025	+800%

How much Latin America searches for affiliate marketing

The Spanish query "marketing de afiliados" has real volume in the five largest Spanish-speaking markets. Argentina is the surprise: it more than doubles Mexico.

Average monthly Google searches. For comparison, "affiliate marketing" gets 165,000 monthly searches in the United States. Source: Google Ads via DataForSEO, queried on November 9, 2026.

5907001,0002,0005,000–8,100

Only five countries were queried; the rest have no data.Source: Google Ads via DataForSEO, queried on November 9, 2026

View the data as a table

Argentina	8,100
Mexico	1,600
Colombia	880
Chile	590
Peru	590

Why affiliate marketing runs on SEO

With 3% or 4% commissions, buying traffic on Google Ads rarely leaves a margin: a click in commercial categories costs several dollars and only some visitors buy. That is why most profitable affiliate sites depend on organic traffic, which is not paid per click. The business boils down to an equation: Google rankings for buying-intent searches ("best robot vacuum 2026", "cheap gaming laptop") multiplied by conversion rate and commission.

That model carries two risks. The first is Google: its spam policies penalize thin affiliate pages that only copy product descriptions without adding anything of their own. The second is authority: commercial searches are crowded with large sites that have years of accumulated links. A new affiliate site without backlinks can have the best content and still sit on page three.

There is a third, newer factor: AI assistants. When someone asks ChatGPT or Google AI Mode for the best product in a category, the answer leans on sources that already rank and get cited, such as news sites, comparison sites and well-known review sites. An affiliate site that nobody mentions has little chance of being one of those sources, no matter how good its reviews are.

That is why affiliate sites, together with online stores, are among the most consistent buyers of links. The logic is the same as for an ecommerce site: content answers the query and links give it the authority to compete. We cover it in detail in our guides to ecommerce SEO and how to get backlinks.

How to start an affiliate marketing site on a solid footing

1. Pick a niche with commission and demand. Check the program's table before writing: a category at 1% needs ten times more sales than one at 10%.
2. Research buying keywords. Comparisons, "best X", "X vs. Y" and "X price" convert better than informational searches.
3. Write from real experience. Real photos, tests, pros and cons: that is what Google rewards and what separates a review from a catalog.
4. Disclose your links. Tell readers the site earns commissions and mark affiliate links with rel="sponsored".
5. Build authority from month one. Mentions and links from real media in the country. Before paying for them, read how to buy backlinks without risk.

At ESBUENISIMO LINKS we work with more than 1,400 Latin American news sites where you can publish articles with a link, filtered by authority and topic. For projects in Mexico, the largest market for "afiliados amazon" searches, you can also get backlinks from Mexican media.