Picture this. It's budget season. Your CEO leans back and asks a simple question.
"If we cut marketing spend by 20%, what breaks?"
You open your dashboard. Clicks. Opens. Form fills. Lots of numbers. None of them answer the question.
If that moment makes your stomach drop a little, you're not alone. When I sat down with marketing measurement expert Bonnie Crater on the Marketing Smarts podcast, she told me what keeps her up at night: so many marketers are confused about marketing attribution and how to actually do it.
Then she said the part I want you to hear. Once you get the gist, it's really not that hard.
So let's get the gist. One clear step at a time.
What Marketing Attribution Actually Is
Bonnie's definition is refreshingly simple. Marketing attribution is the impact of all your marketing campaigns on pipeline and revenue.
And the reason you do it? To figure out where to place your budget bets. Which programs matter most. Which matter least.
Now, you might be thinking, "George, my CRM already shows me original source. Organic, social, referral, email. Isn't that attribution?"
It's a start. But most marketers track top-of-funnel numbers like clicks, responses, and leads. Attribution goes further. It asks whether you're teeing up good leads for sales, whether those leads become pipeline, and whether that pipeline closes.
Bonnie made a point I love. On the profit and loss statement, it doesn't say "sales" on one line and "marketing" on another. It says sales and marketing. Together.
That's what attribution does. It ties the two teams to the same outcome.
Why Attribution Matters More in 2026
Bonnie's parting advice was about tight budgets. When money is tight, she said, measurement has never been more important, because that's when you most need to optimize your spend.
That advice has aged well.
Gartner's 2026 CMO Spend Survey found marketing budgets basically flat, at 7.8% of company revenue compared with 7.7% in 2025. And 56% of CMOs said they don't have the budget they need to deliver their 2026 strategy.
So here's the real talk. If you can't show which programs drive pipeline and revenue, someone else will decide what gets cut. Usually with less information than you have.
Attribution gives you a seat at that table.
Attribution Models Without the Glazed Eyes
Bonnie admitted that when you say the word "models," marketers' eyes glaze over. Stay with me. This part is simpler than it sounds.
There are two basic types:
- Single-touch attribution gives all the credit to one interaction, usually the first or the last.
- Multi-touch attribution spreads credit across several interactions.
Bonnie's example makes it click. Say you close a $10,000 deal, and five marketing touches were part of it. A webinar. A download. An email. You get the idea.
If you give each touch equal credit, you divide $10,000 by five. Each touch gets $2,000 of credit. If dollars feel weird, think of it as 10,000 points.
That's it. You're just giving credit in a logical way to every touch.
How to Choose Your Model
Here's the rule Bonnie gave, and it's the most important line in this article: choose a model that matches your marketing strategy.
- If your strategy is mostly about generating new demand at the top of the funnel, a first-touch model is great. It shows which campaigns start the journey.
- If you want to understand your whole customer journey and your full marketing mix, use a multi-touch model that credits the touches leading up to the deal.
And don't pick just one. Bonnie recommends running multiple models at the same time, because comparing them teaches you things a single view hides.
What This Looks Like in HubSpot
If you're on HubSpot, you're not starting from scratch. HubSpot's revenue attribution reports, which live in Marketing Hub Enterprise, let you compare models like first touch, last touch, linear, U-shaped, W-shaped, time decay, and full path. [VERIFY: current tier availability on HubSpot Knowledge Base]
A quick translation of the common multi-touch models:
- Linear: equal credit to every touch, just like Bonnie's example.
- U-shaped: most credit to the first touch and the moment someone became a lead.
- W-shaped: most credit to the first touch, lead creation, and deal creation.
- Full path: heavy credit at first touch, lead, deal creation, and close.
Not sure where to start? Run first touch and one multi-touch model side by side for the same quarter. Then notice where they disagree. That's where the learning lives.
A 2026 Heads-Up: Your Ad Platform Already Picked a Model for You
Here's something that changed since Bonnie and I talked.
In 2023, Google removed the first click, linear, time decay, and position-based models from Google Ads and Google Analytics 4. That left only last click and data-driven attribution.
Data-driven attribution can be useful. But Google doesn't fully explain how it assigns credit, and it only sees what happens in Google's world.
That's exactly why your CRM matters so much. Your CRM is where marketing touches meet deals and real revenue. It's the place you can choose a model that reflects your strategy, not your ad platform's.
Takeaway: Use ad platform reports to manage ads. Use CRM-based attribution to make budget decisions.
The Myth: Attribution Measures Everything
I asked Bonnie what myth she'd love to bust. Her answer: people use "marketing attribution" to mean all marketing measurement of everything.
She draws a clear line between two things:
- Attribution is about budget. What's impacting pipeline and revenue, and what isn't.
- Funnel metrics are about process. How leads move from marketing to sales, how fast sales follows up, and where things get stuck.
Bonnie traced funnel metrics back to the SiriusDecisions waterfall, which gave us terms many of us still use: inquiry, MQL, SAL, SQL.
Here's the 2026 update. SiriusDecisions became part of Forrester, and Forrester's B2B Revenue Waterfall now centers on buying groups and opportunities instead of individual leads. Forrester has been openly encouraging teams to move from MQLs to opportunities.
Why? Because in B2B, a group of people buys, not one person. Your funnel metrics should reflect that.
Bonnie's big insight still stands. In her view, process is half the problem and budget optimization is the other half. Solve both, and you're in really good shape.
From Stack Rank to Budget Moves
So what does attribution actually give you?
Bonnie described it as a stack rank. A clear list of your campaigns, or groups of campaigns, from most impact on pipeline and revenue to least. Maybe it's 30. Maybe 50. Maybe 100 for a bigger company.
Suddenly you can make judgment calls based on data instead of gut feel or the loudest voice in the room.
You can look back at this month, this quarter, or this year. You can watch trends over time. Is that webinar series climbing or sliding?
Just having that list, Bonnie said, is huge. I agree.
Two Habits That Make Attribution Work
When I asked Bonnie for practical tips, she gave two that sound simple and change everything.
1. Pay Attention to Your Data
If something looks strange, it might mean your systems are feeding bad information. Broken tracking. Missing campaign tags. Duplicate records. Deals with no associated contacts.
If you're lucky, Bonnie said, someone in your organization wakes up every day making sure the data flows correctly. If you're not that lucky, do the best you can.
This is where a HubSpot Super Admin becomes a revenue hero. Clean data is what makes every attribution report trustworthy.
2. Actually Meet About the Results
What's the point of measuring, Bonnie asked, if you don't get together and talk about it?
The companies doing this well, in her experience, hold a weekly meeting. They review the dashboard, discuss what's working and what isn't, and leave with action items.
Those meetings also help you catch data problems early, so you can fix how you collect it.
Takeaway: Put a recurring 30-minute attribution review on the calendar. Marketing and sales leaders in the same room. Leave with at least one decision.
The Hurdles: Education and Baselines
Bonnie named two hurdles that trip teams up.
First, education. If people don't understand what the metrics mean, they won't know what action to take. Her fix: have your resident expert run a brown bag lunch and teach everyone the basics.
Second, baselines. When you start, you won't know what good looks like. That's okay. Start measuring, learn what's normal for your business, and then set real goals against that baseline.
Don't let "we don't have goals yet" stop you from starting. The baseline is the first goal.
The SLA: Accountability for Both Teams
I couldn't help asking Bonnie about service level agreements, because attribution and accountability go together like a good wine and a nice meal.
Her answer framed the whole relationship beautifully. The purpose of marketing is to make your products easier to buy and easier to sell.
From there, each team makes a promise:
- Marketing promises to deliver a certain quantity and quality of leads.
- Sales promises to follow up on qualified leads as quickly as humanly possible.
An SLA puts those promises in writing. And attribution tells you whether both sides are keeping them.
What Success Looks Like: The Cadence
So how do you know you've reached attribution nirvana? Bonnie described a cadence:
- Start aligned. At the beginning of the year or quarter, marketing and sales agree on sales goals and objectives.
- Have a system. Use a tool that actually measures attribution and funnel metrics.
- Meet regularly. Review the data and discuss what's working.
- Adjust investments. Double down on what's working, pull back from what isn't, or change a program and measure the result.
Sometimes the right call is no change at all. That's fine. The point is that you decide, with data, on purpose.
Once that cadence clicks, Bonnie said, it gives you real power over your priorities.
How to Start Marketing Attribution, One Step at a Time
This is how we'd walk through it with you at Sidekick. Don't try to do all five this month.
Step 1: Write down your strategy question. Are you trying to grow new demand, or understand your whole journey? That decides your first model.
Step 2: Clean your data. Fix campaign tagging, associate contacts with deals, and make sure closed-won deals have accurate amounts. Without this, every model lies.
Step 3: Run two models side by side. One single-touch, one multi-touch, on the same closed-won revenue. Note where they disagree.
Step 4: Set a baseline for one quarter. Don't chase goals yet. Learn what normal looks like.
Step 5: Start the weekly review and write the SLA. Thirty minutes, both teams, real decisions. Then put the promises in writing.
And one more from me. Add a "How did you hear about us?" field to your key forms and ask it on sales calls. Software can't see every conversation, podcast, or recommendation that brought someone to you. Humans can tell you.
Questions to Sit With This Week
- If you had to cut 20% of your marketing budget tomorrow, would you know where to cut?
- Does your team know the difference between attribution and funnel metrics?
- When did marketing and sales last review the same report together?
- What promise is marketing making to sales right now, and is it written down?
The Bottom Line: Measure So You Can Lead
Attribution isn't about marketing proving it deserves to exist. It's about marketing and sales working together to put every dollar where it can do the most good.
Bonnie said it best at the end of our conversation. When budgets are tight, measurement has never been more important.
Start small. Clean the data. Pick two models. Meet every week. Before long, you won't be staring at clicks when the CEO asks what breaks. You'll have an answer.
