What are UTM parameters?

UTM parameters are campaign tags added to the end of a URL.

They tell an analytics tool where a visit came from and which campaign should receive credit. A tagged URL might look like this:

https://example.com/pricing?utm_source=newsletter&utm_medium=email&utm_campaign=launch-week

When someone clicks the link, the analytics tool can store the campaign fields with the visit.

The five UTM fields

The standard fields are:

• utm_source: the platform or sender, such as google, newsletter, linkedin, partner, or producthunt.
• utm_medium: the channel type, such as cpc, email, social, referral, or affiliate.
• utm_campaign: the named campaign, such as launch-week, q3-webinar, or black-friday.
• utm_content: the creative, placement, button, or link variant.
• utm_term: the keyword, audience, or targeting term.

For most SaaS teams, utm_source and utm_campaign carry the most useful early signal.

Why UTMs matter

Referrer data is often incomplete. Email clients, private browsers, messaging apps, redirects, and privacy settings can all remove useful source information.

UTMs give you explicit campaign data. They are especially useful for:

• Newsletters.
• Sponsorships.
• Partner links.
• Paid search campaigns.
• Paid social campaigns.
• Affiliate links.
• Product launches.
• Webinars and events.

Good UTM naming

Use lowercase, hyphens, and stable names:

utm_source=newsletter
utm_medium=email
utm_campaign=launch-week
utm_content=pricing-cta

Avoid changing names for the same channel. newsletter, email-list, and mail may all mean the same thing to your team, but they become separate rows in a report.

Common UTM mistakes

The most common mistakes are:

• Tagging internal links.
• Using inconsistent capitalization.
• Mixing source and medium.
• Creating campaign names that are too vague.
• Forgetting to connect UTMs to checkout.

Internal links are especially risky. If a visitor arrives from Google and then clicks an internal link tagged with utm_source=homepage, the original acquisition source can be overwritten.

UTMs and revenue

UTMs are not enough for revenue reporting by themselves. Stripe or another payment provider will not automatically know which campaign created the customer.

To report revenue by UTM campaign, your analytics system needs to store campaign context with the visitor or session, then pass an attribution bridge into checkout.

Read UTM revenue attribution for the payment-aware workflow, and direct traffic revenue attribution if direct traffic is taking credit from campaigns.