First-touch or last-touch attribution for a SaaS

By Devendra Variya, co-founder of Virling. Published 2026-10-26.

For most small SaaS products, use last non-direct touch to decide where to spend this week, and look at first touch to see what introduces you. Both are rules for deciding which visit gets credit for a payment.

The two rules

• First touch: credit the first source that ever brought the visitor
• Last touch: credit the last source before they paid. Last non-direct touch skips visits typed straight into the browser, which hide the real source

An example

Someone finds you through an AI assistant answer on Monday. On Thursday they search your name, then pay.

• First touch gives the credit to the AI assistant
• Last touch gives it to organic search

Neither is wrong. They answer different questions.

What each rule tells you

• First touch shows what introduces you to people. Use it to decide what to start or keep doing for awareness
• Last touch shows what closes. Use it to decide where the final nudge happens, such as search for your brand name or an email

Which one for a small SaaS

Buying cycles are short for low-priced products, often one to a few visits, so the two rules agree most of the time. Start with last non-direct touch inside a lookback window (30 to 90 days is common). Check first touch when a channel looks weak but you suspect it starts the journey.

The mistake to avoid

Do not switch rules each time a report looks bad. Pick one, keep it fixed, and compare channels under the same rule over time.

Seeing the visits behind a payment

A rule only gives one answer. Seeing every visit a customer had before paying shows the real path. Virling lists the visits before each payment and lets you choose the model and lookback window; see the model docs.

Frequently asked questions

What is the difference between first-touch and last-touch attribution?

First touch credits the first source that brought the visitor. Last touch credits the last source before the payment.

Which attribution model should a small SaaS use?

Last non-direct touch is a sensible default for deciding where to spend time this week. Check first touch to see which channels start the journey.

What is a lookback window?

The number of days before a payment in which visits can earn credit. Thirty to ninety days is common for SaaS.

The beta is open to everyone at beta.virling.com.