Discount Codes vs Tracking Links: Which Should You Use to Track Influencers?

Discount code or tracking link — the short difference

A discount code is typed by the customer at checkout and needs no click to work. A tracking link registers a click and follows the visit through to your site. The two methods catch different kinds of sale, and neither catches everything on its own. Most brands end up running both per creator, because each one covers the other's blind spot.

Discount codes: strengths and weaknesses

A unique code per creator gives the customer a concrete reason to act and a number that ties directly back to that creator at checkout.

• Strength: captures delayed purchases. A customer who watches a video, thinks about it for a few days, then remembers the code from the caption is still attributed correctly — the code doesn't depend on any link still being clickable.
• Strength: survives cross-device journeys. The customer can see the content on mobile and buy on desktop later without losing attribution, because the code isn't tied to a device or a cookie.
• Weakness: codes leak. Codes get shared, posted on coupon-aggregator sites, or passed around in group chats. Once that happens, the code stops being a reliable signal of who actually drove the sale.
• Weakness: the discount costs margin. A code that carries a real discount is more expensive than a link — see exactly how a discount eats into contribution in Worked Example: 10 Influencers, UGC + Commission, scenario C.
• Weakness: no click data. A code tells you someone bought — not how many people saw the content, clicked, or dropped off along the way.

Tracking links: strengths and weaknesses

A unique link per creator shows the full journey from click to purchase — if the customer completes it in one session.

• Strength: shows click behaviour early. Clicks are a signal you get before any orders exist — useful for judging whether content is generating interest long before sales numbers are ready.
• Strength: doesn't cost margin. A link doesn't need a discount to work as a tracking mechanism.
• Weakness: breaks across devices. If the customer clicks on mobile and buys on desktop later, tracking usually doesn't follow.
• Weakness: browsers and apps limit how long tracking cookies last. Safari's tracking protections, and similar mechanisms in other browsers, mean a click can't always be tied to a purchase that happens much later — see exactly how short that window can get in attribution windows in influencer marketing.
• Weakness: a poor fit for how people actually use TikTok and Instagram. On both platforms it's common for someone to watch the content without clicking any link in the post or the bio, then search for the brand themselves afterward. That sale never becomes part of the link's numbers.

Comparison

Why either method alone undercounts a creator's real effect

Run tracking links only, and you miss every purchase where the customer remembered the code but never clicked — which hits especially hard on platforms where viewers typically don't click through from the post itself. Run discount codes only, and you miss purchases where the customer clicked and bought immediately but never used the code — because checkout was already filled in, say, or they simply forgot it. Neither method alone gives you the full picture; see the broader approach to attribution in how to track influencer marketing performance. If you're seeing strong engagement with no tracked sales at all — through either method — the problem usually sits downstream of tracking itself; see why influencer campaigns get engagement but no sales. Both methods are also, at heart, last-click mechanisms — see influencer marketing attribution explained for how that compares to multi-touch attribution and incrementality testing.

Worked example: what you miss if you only run one method

The numbers below are hypothetical and for illustration only, to show how large the gap can be. This is not a real Make Influence customer case, and none of the figures are benchmarks. Replace them with your own.

Assume a creator genuinely drives 200 purchases for a brand. Of those:

• 130 purchases happen after the customer clicks the tracking link.
• 100 purchases happen with the customer entering the discount code at checkout.
• 60 of those purchases do both — click and use the code — so they're counted in both totals above.

That gives:

• Click only, no code = 130 − 60 = 70 purchases
• Code only, no click = 100 − 60 = 40 purchases
• Visible purchases if you run tracking links only = 130 of 200 = 65%
• Visible purchases if you run discount codes only = 100 of 200 = 50%
• Visible purchases if you run both = 70 + 40 + 60 = 170 of 200 = 85%
• Still invisible even with both methods = 200 − 170 = 30, or 15% — typically customers who saw the content and remembered the brand, but neither clicked nor used the code.

Combining both methods lifts visibility here from 50–65% up to 85%. No tracking method directly catches the remaining 15% — which is why watching for lift in direct traffic and branded search during the campaign window remains a useful, if imprecise, supplementary signal; see how to track influencer marketing performance for how to use it as a countermeasure.

Decision framework: when to use which

• IF the creator posts mainly to TikTok or Instagram Reels, where viewers typically don't click through from the post → prioritise a discount code, or you'll lose most of the sale in your reporting.
• IF you want an early signal before the campaign has generated any sales → use a tracking link so you can see clicks immediately.
• IF the product's margin is thin → be cautious with the discount size, or lean on the link and accept you'll miss some delayed purchases; see how a discount hits contribution in Worked Example: 10 Influencers, UGC + Commission.
• IF you have the budget and tooling to issue both per creator → do it. That combination gives the most complete picture.
• IF you can only run one method for practical reasons → choose based on the platform and the product's margin, not on whichever is easiest to set up.

Setting it up in practice

• Give every creator their own link and their own code — never a shared code across several profiles. A shared code makes it impossible to tell who actually drove the sale.
• Use consistent UTM parameters on the link so traffic groups correctly in your analytics — see the setup in how to track influencer marketing performance.
• Set an expiry date or usage cap on the code if you want to limit the risk of it landing on a coupon site and being used by people the creator never reached.
• Log both channels in the same system so you can de-duplicate purchases that both clicked and used the code, instead of counting them twice and overstating the total.
• Set an attribution window that matches your own consideration time — too short a window hits code-only customers hardest.
• Convert to ROI once the data is clean. Once both channels reconcile properly, the natural next step is turning them into an ROI percentage — see how to calculate influencer marketing ROI.

Make Influence's operational perspective

In Make Influence's experience, the most common mistake is running only one of the two methods because it's easier to set up — typically a single shared link with no individual codes. That produces a clean click number, but systematically undercounts creators whose audience mostly watches content without clicking, which hits content that performs well on TikTok hardest. We recommend issuing both per creator by default, and dropping the code only when the product's margin genuinely can't absorb it.

The other recurring problem is double counting: purchases where the customer both clicked and used the code sometimes get counted twice across two separate systems, artificially inflating the total. In Make Influence, the link and code for each creator are issued together inside one system, so the two paths can be reconciled against each other instead of simply added on top of one another.

FAQ

Can I run a discount code with no actual discount?

Yes — some brands use a code with a 0-value discount purely as a tracking mechanism. You lose the extra purchase incentive, but keep the attribution benefit without the margin cost.

Should the code and the link point to the same offer?

They don't have to, but it makes the accounting simpler if they do. Run different offers on each and you can no longer compare the two channels' real contribution directly.

What do I do if a code gets posted widely on a coupon site?

Close the code and issue the creator a new one. Keep monitoring for leakage — it's easier to prevent with an expiry date or a usage cap than to clean up afterward.

Are tracking links redundant if I'm already using codes?

No. The link is the only one of the two methods that shows clicks — whether the content generates interest at all, before anyone has bought. You lose that information entirely without it.

How long should the attribution window be?

Set it to match your own consideration time, typically 7–30 days — see how to track influencer marketing performance for more on how the window affects your numbers, and attribution windows in influencer marketing for exactly how Meta, TikTok, GA4 and Safari's cookie cap each set that window in practice.