Thinking of Cutting Ad Spend? Check These 3 Data Signals First

Are we spending in the right way? Or are we just not seeing the full picture?”

When acquisition plateaus and cost-per-lead climbs, it’s tempting to reduce your ad spend. But as a trusted PPC agency businesses rely on, we know that cutting budget too early often backfires. The right approach? Dig into your data first.

Here are the three critical data signals to review before pulling the plug on your paid media.

1. Analyse Conversion Rate by Stage (Not Just Final Leads)

Leads aren’t binary. They’re part of a funnel that can break at multiple points. If you’re only looking at final form submissions, you’re likely missing key insights.

Map the full user journey:

• Ad click → Landing page view

• Page view → Scroll depth (did they engage?)

• Scroll → CTA click

• CTA → Form start

• Form → Submission

• Submission → Qualified lead

Example: If only 10% of landing page visitors click your CTA, the issue isn’t traffic volume – it’s likely poor page design or messaging.

Quick win: Use GA4 event tracking to pinpoint drop-off stages and optimise from the top down.

2. Segment ROAS and CAC by Intent Channel

Blended metrics hide nuance. Don’t compare Google Ads and LinkedIn like-for-like if their intent levels differ.

• Google Ads (especially Search) captures bottom-of-funnel intent

• LinkedIn or display often nurtures colder, upper-funnel traffic

What to track:

• Time-to-close by channel

• Pipeline stage reached (SQL vs. MQL)

• Average deal size / LTV

Real-world example: Spending £1k on Search might bring 3 SQLs that close in 2 weeks. That same £1k on social may generate 10 MQLs that stall. Surface-level CAC tells you nothing without this context.

As a PPC partner, we help businesses allocate spend based on intent-led ROI, not vanity metrics.

3. Track Incrementality: What Happens When You Stop Spending?

To assess real impact, test what happens when you don’t run ads. This is called incrementality.

How to test:

• Pause brand campaigns in a specific region for 7 days

• Compare drop in direct traffic, branded searches, and conversions

• Repeat with non-brand campaigns

Use your CRM to correlate leads with campaign activity and control for external factors.

Key question: Is paid media creating demand or just capturing it?

Better Than Asking “How Much Should I Spend?”

The smarter question is: how much should I invest to hit my pipeline target?

Start with revenue goals:

• Target revenue: £100k/month

• Avg. deal: £10k

• Win rate: 20%

• You need 10 deals → 50 SQLs

Then work backwards using performance data:

• LP conversion rate: 3%

• CPC: £5

• Required visits: 1,667

• Cost: £8,335/month

If your actual CPA is £160+ and climbing, the fix isn’t necessarily slashing spend – it’s identifying inefficiencies.

When You Should Consider Cutting Spend

We’re not saying spend blindly. If you spot these signs, pause and review:

• 90%+ of spend going to broad match keywords with no negatives

• 70%+ of form fills are unqualified

• Spend exceeds 30% of monthly revenue with no pipeline lift

• Zero CRO testing on key landing pages

• Sales feedback: leads are uncontactable or irrelevant

Summary: Spend Smarter, Not Smaller

Before you cut your PPC budget, check:

✅ Are users engaging pre-form?

✅ Are you segmenting ROAS by intent?

✅ Do you understand incrementality?

✅ Are you working backwards from revenue?

Let the data guide your decisions—not just the numbers that look good on paper, but the ones that drive profit.

At Thundr Digital, we help brands across the UK make data-led decisions that scale. Whether you’re reviewing PPC in Edinburgh, managing Google Ads spend, or looking to improve landing page CRO, we’re ready to step in.

👉 Book a free PPC audit