TL;DR
Paid ads give you immediate visibility, but the traffic stops the second you stop spending. SEO takes longer to show results, but once it’s working, it compounds.
The key to defending your SEO budget is framing it as a long-term asset, not a short-term cost. Use real data, show cumulative value, and make it clear what you’d lose if you switched it off.
Why SEO budgets are always first on the chopping block
Every marketing team has had this conversation. Revenue dips, a new CMO comes in, or someone in finance spots a line item that’s been running for months without an obvious spike in leads. SEO is the usual suspect.
The problem is visibility. Paid ads are easy to track. You spend £5,000, you get X clicks, Y leads, Z sales. It’s all in a dashboard.
SEO works differently. The results build over months, they’re spread across hundreds of pages and keywords, and the attribution is harder to pin down in a single report. That doesn’t mean SEO isn’t delivering. It usually means nobody’s framing it the right way.
The paid ads trap
PPC is brilliant at what it does. You can launch a campaign in the morning and have leads by lunchtime. For time-sensitive promotions, new product launches, or testing demand in a new market, it’s hard to beat.
But here’s the catch: every click costs money, and the costs keep rising. The average Google Ads CPC across all industries is now around £4.30, and that’s just the average. In competitive sectors like legal services, you’re looking at £8+ per click. For the most expensive keywords in insurance and finance, it can top £30.
CPC went up in 87% of industries last year alone. The moment you pause the campaign, the traffic disappears. You’re renting attention, not building anything.
Compare that to an SEO-driven blog post that ranks well. It’ll keep pulling in traffic for months or even years after it’s published, without any additional spend. The cost per visit drops over time. Paid ads do the opposite.
💡 Worth knowing: Google Ads operates on an auction model. As more competitors enter your market and bid on the same terms, your cost per click goes up. SEO doesn’t work that way. A page that ranks well doesn’t get more expensive to maintain just because a competitor enters the space.
How to frame SEO as an investment, not a cost
The people holding the budget usually aren’t SEO experts. They respond to numbers, risk, and return. So that’s the language you need to use.
1. Show cumulative traffic value
One of the most effective ways to make the case is to calculate what your organic traffic would cost if you had to buy it through PPC. Most SEO tools (Ahrefs, Semrush) have a “traffic value” metric that does exactly this. If your organic traffic is worth £20,000/month in equivalent ad spend, that’s the number to put in front of decision-makers.
2. Compare cost per acquisition
Pull the actual numbers. What does it cost to acquire a lead through paid ads vs organic search? In most cases, organic leads come in at a significantly lower cost per acquisition once the initial SEO work has gained traction. If you’re weighing up the real costs of SEO, the comparison with PPC often makes the organic investment look very reasonable.
3. Map the risk of switching off
This is the argument that tends to land hardest. If you stop running PPC, you lose your ad placements instantly, but your organic rankings do not. If you stop investing in SEO, your rankings don’t disappear overnight, but they will erode. Competitors will outpace you, content will go stale, and you’ll gradually lose the positions you spent months earning.
Rebuilding lost SEO ground takes significantly longer than it took to build it in the first place. That’s a risk worth spelling out clearly.
🤝 Keep in mind: The strongest marketing strategies don’t treat SEO and PPC as an either/or decision. They work together. Paid ads cover the short-term gaps while SEO builds long-term equity. Cutting one to fund the other usually ends up costing more in the long run.
Real numbers beat gut feelings
If your SEO reports are full of vanity metrics like impressions and average position, you’re making it easy for someone to question the spend. Instead, tie your reporting to outcomes the business actually cares about.
💰 Organic revenue. If you’re running an ecommerce site, you can track this directly. For lead generation, connect organic traffic to form fills and pipeline.
🎯 Branded vs non-branded traffic. Non-branded organic traffic (people finding you through generic search terms, not your company name) is where SEO really earns its keep. That’s net-new demand you wouldn’t capture without it.
🎢 Year-on-year growth. SEO is a long game. Monthly fluctuations are normal. What matters is the trend over six to 12 months. Show that trajectory, not a single month’s snapshot.
📈 Page-level performance. Which specific pages are driving traffic and conversions? Being able to point to individual assets that are working makes the investment tangible.
With AI tools like ChatGPT and Perplexity now driving referral traffic too, it’s a good idea to track your AI search visibility alongside traditional organic metrics. That’s another source of value your SEO investment is quietly building.
What happens when you cut SEO (a real-world pattern)
We see it play out for our clients the same way almost every time. A business pauses SEO to redirect budget elsewhere. For the first month or two, nothing obvious changes. Rankings hold, traffic stays roughly flat, and someone in the room probably feels confident in saying, “see, we didn’t need it.”
Then, month three hits. Content starts ageing. Competitors publish fresher, better-optimised pages. Technical issues that would normally be flagged in an SEO audit go unnoticed, and the backlinks stop coming in. By month six, rankings have slipped, traffic is down, and the business is now paying more on PPC to compensate for the lost organic visibility.
The cost to recover? Almost always more than the cost of maintaining the SEO investment in the first place.
How to make the case stick
If you’re the person responsible for defending the SEO budget, here’s what works:
➡️ Build your case before you need it. Don’t wait until someone questions the spend. Deliver monthly reports that tie SEO activity to commercial outcomes, so the value is already established.
➡️ Speak their language. Finance teams don’t care about domain authority or keyword rankings. They care about revenue, cost per acquisition, and return on investment.
➡️ Use competitor data. Show what competitors are investing in SEO and where they’re outranking you. Nobody likes being told they’re falling behind.
➡️ Run a “what if we stopped” scenario. Model out what would happen to traffic, leads, and revenue if SEO investment stopped for six months. Present the projected cost of recovery alongside it.
➡️ Position SEO as insurance. Paid ads are a tap you can turn on and off. SEO is the foundation. Without it, you’re entirely dependent on ad spend for visibility, and that’s a risky place to be.
The way you measure and report your SEO KPIs will make or break your case. If you’re still reporting on metrics that don’t connect to revenue, now is the time to fix that.
SEO and PPC work best together
This isn’t an argument against paid advertising. PPC is a legitimate, effective channel. The argument is against treating SEO as the expendable one when budgets get tight.
The data consistently shows that businesses investing in both organic and paid search outperform those relying on one channel alone. SEO captures demand at every stage of the buying journey. PPC captures it at the point of highest intent. Together, they cover more ground than either could alone.
There’s also a compounding effect. Strong organic rankings build long-term ROI that paid campaigns can’t replicate, and the link equity and authority you earn through SEO makes every future piece of content easier to rank.
“The businesses that protect their SEO budget through tough quarters are the ones that come out ahead when things pick up again. The ones that cut it usually spend the next 12 months trying to claw back what they lost.”
Gareth Bull
Founder
Bulldog Digital Media