B2B Buying Signals: 19 Ranked From C to S Tier

B2B buying signals are events that show a company may be ready to buy. Think funding, hiring, website visits, or a new leader joining. One signal on its own rarely means much. Real buying intent shows up when you stack two or three signals on the same account.

Here is a quick example. A company just raised money. Should you reach out? Maybe. But that funding round is public, so every sales team sees it too. Now picture the same company hiring 5 or 6 sales reps, and someone from it just visited your pricing page. That is a much stronger reason to reach out today.

Below, I rank 19 B2B buying signals from C tier to S tier and show how we monitor them in Clay so the system runs on its own. This ranking is built for companies that sell sales, marketing, or RevOps services. If you sell something else, the order may shift a little.

Free download: Get the full list of 19 buying signals, with where to get the data for each one.

Key takeaways

What are buying signals in B2B sales?

A buying signal is any sign that a company has a problem you solve, at a moment when it is likely to care. A signal only matters if it connects to that problem. A funding round means nothing to you unless the money creates a need for what you sell.

It helps to split signals by what they tell you:

The best accounts show all three. That is the whole idea behind signal based selling.

How do the buying signal tiers work?

List of 19 B2B buying signals, ranked

Want this as a checklist? Download the free buying signals list.

C tier: signals for building your list

C tier signals tell you who to target, not when. Use them to build your lead list, then wait for a timing signal.

B tier: ads, funding, events, and headcount

B tier signals show something changed inside the company. They are worth a closer look, but most need a second signal before you have a clear reason to reach out.

Why "congrats on your funding" fails

Funding is a high intent trigger, but it is public. The day a round is announced, the founder's inbox fills with the same opener from dozens of sellers. Yours gets buried or marked as spam.

Keep funding as a background filter and lead with something only you noticed. A good example for running ads: "You're driving traffic from 50+ active ads. If those landing pages aren't optimized, you're losing money. Want me to show you where?"

A tier: hiring, website visits, and job changes

A tier signals give you a strong reason to reach out and point to good timing.

Example: our GTM engineer hiring campaign

One of our best campaigns targets companies hiring a GTM engineer. GTM engineers are hard to hire, so these roles stay open. We offer a fractional GTM engineer who joins for 3 months, builds and documents the system, and hands over the keys. We use the job description to call out the most relevant duties. That campaign keeps bringing us long term clients. See the full build in our Clay lead generation workflow.

S tier: stack signals for real buying intent

Single signals rarely work alone. Stacked signals do. These three combinations sit at the top.

You won't get many S tier accounts. That is why I keep a human in the loop. Send the account to a rep, for example through a Slack alert, and let them write the message.

How to create the website visit

The visit is the part you can create. Build a list of companies that match a third party signal, like a recent Series A. Upload it to LinkedIn Ads as a company list audience. Some of those companies will start visiting your site. When they do, that is your signal to reach out.

This connects first party data (visits, ad engagement) with third party data (funding, hiring). We run it for almost all of our ABM and outbound clients.

How to respond to buying signals

Finding the signal is half the job. How you use it decides if you get a reply.

Need help with the copy? See our guides on AI cold email personalization and cold email follow-ups.

How to identify buying signals in Clay

Here is how we set up real-time buying signal monitoring in Clay, so the system runs on its own.

Each record holds its own account data: fit score, tier, tech stack, open jobs, intent topics, linked people, and open CRM deals. If you need to fill gaps first, start with B2B data enrichment in Clay and a clear ideal customer profile.

Routing website visitors into sequences

When a company visits your site, Clay enriches it and shows the pages it viewed. Check it against your block list. If it passes and the company is already in your audience, you already have the right people. Score it (a visit plus open jobs is S tier), write the message, push to your CRM, and add to a sequence.

Syncing signal tiers to LinkedIn Ads

For one client, we synced all A and B tier companies into LinkedIn Ads. When those companies engage, the data flows back into a Clay table and gets matched to the audience. If 3 people from one company show high engagement, we reach out to them. Want to turn engagement into a score? See our guide to lead scoring models.

Best tools for tracking buying signals

You don't need all of these. Pick the tools that match the signals you care about most.

Our setup uses Clay as the hub, with website visits, LinkedIn engagement, and job signals flowing into it. Need help picking the right stack? See our Clay consulting services.

Common buying signal mistakes

Frequently asked questions

What are buying signals in sales?

Buying signals are events that suggest a company may be ready to buy, like hiring, funding, website visits, or a new leader. They help you choose who to contact and when.

What is the strongest B2B buying signal?

A stack. A website visit plus headcount growth plus recent funding is the best signal in our ranking. As a single signal, hiring for a relevant role or a website visit from an ICP account is strongest.

How do you identify buying signals?

Start with the problem you solve. List the events that show a company has that problem right now. Then track them with a buying signals tool like Clay, which watches web visits, job posts, funding, news, and job changes across your whole market.

Is intent data the same as a buying signal?

Not quite. Topic intent data says a company is researching a subject. It is a gray area and works best as a leading hint. Buying signals like a job post or a pricing page visit are more concrete.

What is buyer intent data?

Buyer intent data shows that a company is researching a topic, product, or problem. First party intent comes from your own channels, like website visits, ad clicks, and email replies. Third party intent comes from research on other websites, from providers like Bombora. Intent data works best when you pair it with a timing signal like hiring or funding.

Which buying signals matter most for ABM?

In ABM you already know your target accounts, so the best signals show which of them are active right now. Watch for website visits from target accounts, LinkedIn ad engagement, and several people from the same account engaging. Then add a timing signal like hiring, funding, or a new leader to decide who to contact first.

How do you score leads using buying signals?

Give each signal points based on its tier, for example 3 points for A tier, 2 for B tier, and 1 for C tier. Add those points to a fit score based on your ICP. Accounts above your threshold go to sales. Lower the score as signals get older, because a funding round from 6 months ago means much less than one from last week. Our guide to lead scoring models goes deeper.

Should I mention the buying signal in my email?

Sometimes. Job posts, launches, and Product Hunt launches are fine to mention. Website visits, competitor follows, and LinkedIn likes are not. Those feel like surveillance.

How many buying signals should I track?

Start with two or three. Build your first list, learn what works, then add more. More ideas in our outbound lead generation strategies guide.

Watch the full ranking and Clay walkthrough

The video walks through all 19 signals, the tier list, and the full Clay setup. Get the free list of all 19 signals, with how to get the data for each one.

Watch: B2B Buying Signals, 19 Ranked From C to S Tier

Want a signal system built for you?

We set up this signal system in Clay as a one time, 3 week project. We find the best signals for your business, build the process, document it, and hand it over. You own it, and it runs on autopilot.

Book a free strategy call, or explore our Clay consulting services and fractional GTM engineering.