What Is Affiliate Marketing? How It Works and What It Pays

In short: affiliate marketing pays a publisher (a blog, a YouTube channel, a newsletter, a comparison site) a commission on each sale or lead it sends to a brand. Income comes from a simple multiplication, traffic × clicks × purchases × order value × commission: at Amazon’s 4.5% rate on kitchen products, an $80 order earns $3.60, so it takes a lot of qualified visitors before a few percent becomes real income.

Affiliate marketing has two sides. For a content creator, it is a way to monetize an audience without selling a product. For a business, it is an acquisition channel paid on results. Each side gains from understanding how the other one works.

How does affiliate marketing work?

Four players are involved:

• the merchant (or advertiser), the brand that sells and sets the commission;
• the affiliate (or publisher), who publishes content with trackable links;
• the affiliate network, which connects both sides, tracks sales and pays commissions (Awin, CJ, Rakuten Advertising, Impact, or a large merchant’s in-house program such as Amazon Associates);
• the customer, who clicks and buys.

Each link carries an identifier unique to the affiliate. When the customer buys within the attribution window (generally 24 hours at Amazon, a period set by each program elsewhere, often 30 days), the sale is credited to the affiliate. The commission is confirmed after the return period, since returns and cancellations void it.

The common payment models: a percentage of the sale (CPA, cost per acquisition), a flat fee per qualified lead (CPL, cost per lead, common in insurance, finance, software trials and education), and, more rarely, pay per click.

How much can you make with affiliate marketing?

No reliable public statistic gives an average affiliate income in the US, and the dramatic income screenshots online describe a minority. The honest approach is to calculate from your own audience.

Worked example for a kitchen equipment blog:

• 20,000 visits a month;
• 5% of visitors click a merchant link, or 1,000 clicks (assumption);
• 3% of those clicks end in a purchase, or 30 sales (assumption);
• an $80 average order (assumption);
• a 4.5% commission, Amazon’s US rate for the Kitchen category.

Result: 30 × $80 × 4.5% = $108 a month. Doubling the commission rate or the order value doubles the income; content that attracts buyers rather than browsers can triple or quadruple the click rate. That is why profitable affiliate sites target buying queries (“best stand mixer for beginners,” “cordless vacuum comparison”) rather than general information queries, a distinction explained in our article on search intent.

Commissions are also taxable. In the US, affiliate income is generally self-employment income: you report it even if a network does not send you a Form 1099, and self-employment tax applies on top of income tax. Check your situation with a tax professional.

Which affiliate programs and networks should you choose?

Amazon Associates is the easiest place to start: a huge catalog and buyers who trust the checkout. Its limits are well known: rates set by category, from 0% to 10% in Amazon’s current US schedule (4% for “all other categories”), a short attribution window, and a ban on using links in emails or offline material.

Multi-merchant networks (Awin, CJ, Rakuten Advertising, Impact) give access to hundreds or thousands of brands, often with higher commissions and longer attribution windows. Each merchant approves or rejects your application based on the quality of your site.

Direct programs, run by software companies or e-commerce brands, sometimes pay a recurring commission for as long as the customer stays subscribed. Software programs are where recurring income is most common.

Selection criteria: fit with your audience, commission rate and approval time, attribution window, payout threshold and quality of the tracking.

What are the FTC rules for affiliate marketers?

Disclosure is mandatory. The FTC’s Endorsement Guides, revised in 2023, treat a commission as a material connection between you and the brand. Readers must be told about it “clearly and conspicuously,” so they can weigh your recommendation. The FTC’s own Q&A for endorsers is specific:

• place the disclosure close to the recommendation, not only in a footer, because readers may miss a notice at the bottom of a page;
• plain wording works, for example “I get commissions for purchases made through links in this post”;
• the words “affiliate link” alone may not be understood, and a “buy now” button is not a disclosure;
• “paid link” right next to the link is considered adequate.

In practice: a visible sentence at the top of the article, a reminder near the buy buttons, and an honest review that includes the product’s drawbacks. If you write about a product you never used, say so. Inventing a test or a personal experience is a deceptive practice. UK publishers follow the same logic under the Advertising Standards Authority’s CAP Code, which requires affiliate content to be “obviously identifiable” as marketing.

Tag the links for search engines. For Google, a paid link should carry rel="sponsored". Leaving it off exposes your site to a loss of trust from search engines, since paid links that pass ranking credit fall under Google’s link spam policies.

What content earns affiliate commissions?

The formats that convert best are those that help someone who has already decided to buy:

1. The comparison of three to five products, with a criteria table and a recommendation for each buyer profile.
2. The detailed review of a product you actually tested, with your own photos.
3. The buying guide that explains the criteria before suggesting models.
4. The tutorial that shows a product in use (a recipe, an installation, a setup).

Consistency matters more than volume. A blog that publishes two strong pieces a month for a year builds more lasting traffic than twenty articles written in one week. On social media, the same disclosure rules apply; our guide to influencer marketing covers that framework.

Should your business launch its own affiliate program?

For a small business selling online, the appeal is obvious: you pay only for results. Before you launch, run three calculations:

• The commission you can afford: it must stay below your margin on the sale, network fees included. A network typically adds an override fee on each commission. Our margin calculator gives you the margin to start from.
• The management cost: recruiting affiliates, supplying creative assets, approving sales, handling disputes.
• Cannibalization: coupon and cashback sites often capture sales you would have made anyway, at the moment the customer searches for a discount just before paying. Exclude them or pay them less.

Manage the program like any paid channel, by cost per customer and customer value. Our article on digital marketing ROI gives the method.

Which mistakes make affiliate projects fail?

• Promoting products you never tested, or chose for their commission rather than their quality: audiences sense it and do not come back.
• Relying on a single program: a commission cut or a closed account wipes out your income overnight. Amazon has cut category rates before.
• Forgetting the disclosure, or hiding it at the bottom of the page.
• Targeting informational queries with no buying intent.
• Not tracking clicks and sales per piece of content: without those numbers, you cannot tell which articles to update first.