First-touch vs last-touch attribution: which channel gets the credit?

Almost nobody buys the first time they meet your brand. They find you on Instagram, forget about you, see a retargeting ad a week later, search your name, and finally buy from an email. Five touches, one sale. So which channel gets the credit?

Attribution is the rule you use to answer that, and the two simplest rules are first-touch and last-touch. They are not right or wrong, they are different questions, and using one when you meant the other sends your budget to the wrong place.

First-touch attribution hands 100% of the credit to the channel that brought the customer in the first time. In the example above, that is Instagram. It answers the question "where do new people discover me?", which makes it the right lens for top-of-funnel and awareness work.

Its blind spot is the finish. First-touch will happily tell you Instagram is your best channel while giving zero credit to the email that actually closed the sale, so leaning on it alone tends to over-fund discovery and starve the channels that convert.

Last-touch attribution gives all the credit to the final click before the purchase, the email in our example. It answers "what tips people over the line?", which is why it is the default in most ad platforms and analytics tools: it is easy to measure and it flatters the bottom of the funnel.

Its blind spot is the start. Last-touch will make retargeting and branded search look like heroes while ignoring the Instagram post that made the customer exist in the first place. Optimise on last-touch alone and you will slowly cut the very channels that fill the top of your funnel.

Use both, for different decisions. Judge your awareness channels on first-touch and your closing channels on last-touch, rather than forcing every channel through one rule. If you can only pick one to start, last-touch is the safer default for a small business selling directly, because it maps most closely to the click that produced the order.

Whichever you choose, you can only run it if every click is tagged and the sale remembers where it came from. Attribution is not a setting you switch on; it is a consequence of tracking each click through to the conversion.

directinapp tags every link with a click id and ties the confirmed sale back to it, so you can read the same campaign as a first touch or a last touch without guessing. That is the foundation for any conversion tracking beyond the vanity click count: once each rupee of revenue knows which touches earned it, you can stop arguing about credit and start moving budget on evidence.