UTM tags are labels added to a link so your analytics can record where a visitor came from. They work well and they fail in one predictable way: inconsistent capitalisation and naming produce a report listing the same source three or four times, which is worse than not tagging at all.
What they are
Extra information attached to the end of a web address that your analytics reads and records. The visitor sees a slightly longer link and nothing else changes.
Five parameters exist and three do nearly all the work.
- Source. Where the link was placed, such as a newsletter, a directory, or a particular platform.
- Medium. The type of channel, such as email, social, or referral.
- Campaign. Which specific effort this belongs to, such as an autumn promotion.
- Content. Optional, for distinguishing two links in the same message.
- Term. Optional, largely used for paid search keywords.
The failure that makes them useless
Inconsistency. Analytics treats values as exact text, so Facebook, facebook, FaceBook, and FB are four separate sources.
After a year of several people tagging links in whatever way seemed reasonable, the report contains twenty rows describing perhaps six actual sources. The data exists and cannot be summed, which is the same as not having it.
The fix is a convention decided once and written down. Everything lowercase, no spaces, and a fixed list of permitted values for source and medium. Campaign names can vary; source and medium should not.
A convention that works
| Parameter | Rule | Example values |
|---|---|---|
| source | Lowercase, from a fixed list | newsletter, facebook, yellowpages, vanwrap |
| medium | Lowercase, from a very short fixed list | email, social, referral, cpc, print |
| campaign | Lowercase, hyphenated, dated where useful | autumn-service-2026, roof-promo-oct |
Keep the permitted values in the same document as everything else about the site. Five minutes of agreement prevents a year of unusable rows.
Where to use them
- Email campaigns, which is where they earn the most, since email traffic otherwise lands in direct or is attributed inconsistently.
- Social posts, where you want to separate a specific post from general platform traffic.
- Directory and partner listings, to find out which ones send anyone at all. This is frequently the most revealing use, because it settles arguments about which listings are worth renewing.
- Printed material, using a short redirect address that carries the tags, which is the only practical way to measure a flyer or a vehicle.
- Anywhere you paid to be listed, since that is a renewal decision waiting to be made on evidence.
Where not to use them
Two important cases.
Never on internal links. Tagging a link from one page of your site to another restarts the visit and overwrites the original source, so a customer who arrived from search is recorded as arriving from your own newsletter. This is the single most damaging misuse and it happens regularly.
Not on paid search links where automatic tagging is already enabled, since the two can conflict. Confirm which is in use before adding your own.
The parts people forget
- Tagged links are visible. They appear in the address bar, get shared, and get bookmarked, so keep them tidy and avoid anything you would not want a customer to read.
- They only survive the first click. If the visitor returns later by another route, the original tag is not reapplied.
- They do not work for phone calls. Someone who sees a tagged link, reads your number, and phones is invisible, which is the wider gap covered in what your analytics cannot tell you.
- Shorteners can strip them depending on the service, so check that the tags survive the redirect.
What to do with the data
The point is a renewal decision, not a report.
Once a year, look at which tagged sources produced visits and which produced enquiries. Directory listings that sent nobody are a subscription to cancel. A partner link that quietly sends steady work is a relationship worth investing in.
That is the whole return on tagging, and it is a real one. Most businesses paying for several listings have no idea which are working, and a year of consistent tags answers it definitively.
Frequently asked questions
What are UTM tags?
Labels added to the end of a link that your analytics reads and records, so you can see which campaign, email, or listing a visitor came from. The visitor sees a longer link and nothing else changes.
Why do my UTM reports show duplicates?
Analytics treats values as exact text, so Facebook, facebook, and FB are three separate sources. A written convention of lowercase values from a fixed list prevents it.
Should I put UTM tags on links within my own site?
Never. Tagging an internal link restarts the visit and overwrites the original source, so a visitor who arrived from search gets recorded as arriving from wherever the internal link claimed.
Can I track a printed flyer or vehicle with UTM tags?
Indirectly, using a short memorable address that redirects to the tagged link. It is the only practical way to measure print, and it will still miss anyone who phones instead of visiting.
Do UTM tags work for phone calls?
No. Someone who sees a tagged link, notes your number, and calls is invisible to the tags. That gap is why asking callers how they found you remains the most valuable attribution available.
What should I actually do with UTM data?
Use it once a year to decide renewals. Which paid listings sent visits, which sent enquiries, and which sent nobody. That single answer usually justifies the whole exercise.
West Coast Media Solutions Inc. provides web design, web development, hosting, digital marketing, and business consulting to organisations across Canada, drawing on more than twenty-five years in the field.
Paying for listings and not sure which work?
We set up a tagging convention and read it annually, so renewal decisions are made on evidence rather than habit.
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