What an Attribution Model Does

An attribution model is the rule that decides which ads, emails or links get credit for a sale. ClickMagick's knowledge base defines it as a rule or set of rules that determines how credit for conversions is assigned to the touchpoints in a conversion path.
It matters because most buyers touch your marketing more than once. Change the model and the same sale gets credited differently, which changes which campaigns look profitable and where you'd move budget.
The Five Models in ClickMagick
| Model | How credit is split | Best used for |
|---|---|---|
| Last Click (default) | 100% to the last link or ad clicked | Getting started; short buying cycles |
| First Click | 100% to the first link or ad clicked | Judging awareness and top-of-funnel campaigns |
| Linear | Equal shares to every touch | Seeing every channel's involvement |
| Position-Based | 40% first, 40% last, 20% split across the middle | Most businesses, most of the time |
| Time Decay | More credit to recent touches, with a 7-day half-life | Long, complex buying cycles |
ClickMagick says its Campaigns tool supports the popular models, including the advanced models offered by Google and Facebook Ads, and lets you switch between them at any time.
A Worked Example
Here's one assumed customer journey, credited under each model. The buyer clicks a Facebook ad, then a Google search ad, then an email link, and buys a $300 product. To keep the arithmetic simple, assume the three touches happened close together.
| Model | Facebook ad | Google ad | |
|---|---|---|---|
| Last Click | $0 | $0 | $300 |
| First Click | $300 | $0 | $0 |
| Linear | $100 | $100 | $100 |
| Position-Based | $120 | $60 | $120 |
| Time Decay | Least | More | Most |
Look at the Facebook ad. Under Last Click it earned nothing, so you might cut it. Under Position-Based it earned $120 because it started the journey. Same data, very different decision. Time Decay's exact split depends on how many days passed between touches, which is why we show it as a ranking.
Each Model in Practice

Last Click
Last Click is ClickMagick's default and the model most ad platforms use. It's simple and easy to explain, and ClickMagick recommends it for newer marketers to start with. In ClickMagick, internal clicks on your own site only count when there are no ad clicks, so a click on your own menu doesn't steal credit from an ad.
Its weakness is that it ignores everything that happened before the final click, which undervalues prospecting ads.
First Click
First Click is the reverse. It's useful for judging which campaigns introduce new buyers, but ClickMagick doesn't recommend it for measuring conversions, because it ignores the touches that closed the sale.
Linear
Linear gives every touch an equal share. It's a fair way to see which channels are involved, but it can over-credit channels that simply appear often, such as retargeting.
Position-Based
Position-Based gives 40% to the first touch, 40% to the last, and splits the remaining 20% across everything in between. ClickMagick calls it probably the best model for most businesses, most of the time, because it rewards both the ads that start journeys and the ones that close them.
Time Decay
Time Decay gives more credit to touches closer to the sale, using a 7-day half-life. A touch seven days before the sale gets half the weight of one on the day of the sale. ClickMagick suggests it for long, complex buying cycles rather than ecommerce.
Which Model Should You Use?
Last Click
Learn your numbers with the model your ad platforms also use.
Position-Based
A balanced view of the ads that open and close sales.
Time Decay
Coaching, B2B and high-ticket offers with weeks of consideration.
First Click
See which campaigns bring buyers in for the first time.
Tips for Using Attribution Models Well
- Don't compare models over a few days. ClickMagick advises against short date ranges, because a handful of sales can swing the numbers.
- Pick one model for decisions, and use others as a second opinion.
- Use Campaigns, not tracking links, for attribution. ClickMagick says tracking links only support First Click and Last Click.
- Remember the plan. Advanced attribution models are listed from the Standard plan, so check our pricing guide if you're on Starter.
Frequently Asked Questions
What is ClickMagick's default attribution model?
Last Click is the default in ClickMagick, as it is in Google Ads, Meta Ads and most analytics tools. ClickMagick recommends it for newer marketers, at least to start.
Which ClickMagick attribution model is best?
ClickMagick's knowledge base calls Position-Based probably the best model for most businesses, most of the time. It gives 40% of the credit to the first touch, 40% to the last and splits 20% across the touches in between.
Can I switch attribution models in ClickMagick?
Yes. ClickMagick Campaigns lets you switch between models at any time, and the change applies to how your reports credit conversions. ClickMagick advises against comparing models over short date ranges.
Do tracking links support all attribution models?
No. ClickMagick says its tracking links support basic conversion tracking with First Click and Last Click only. Campaigns, which uses TrueTracking, supports the full set and should be your main tracking system.
Which plan includes advanced attribution models?
ClickMagick lists advanced attribution models as a feature of the Standard plan, at $199 a month or $166 a month billed annually, and they're also on Pro.
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