The short answer
- PPC = fast, predictable, controllable traffic, but it stops when you stop paying.
- SEO = slower to start, but compounding traffic with a lower long-term cost per lead.
- Most businesses should use PPC for quick wins and testing, and SEO for sustainable growth.
SEO and PPC explained
SEO (search engine optimisation) is the practice of improving your website so it ranks higher in Google's organic (unpaid) results, and increasingly in AI-generated answers. It involves technical improvements, quality content and building authority through links and mentions.
PPC (pay-per-click) advertising means paying to appear in sponsored results, mainly through Google Ads and Microsoft Ads, and paying each time someone clicks. "PPC" is also used more broadly for paid social ads on Meta and LinkedIn.
SEO vs PPC: side-by-side comparison
| Factor | SEO | PPC |
|---|---|---|
| Speed to results | 3–6+ months | Days to weeks |
| Cost model | Ongoing investment in content & expertise | Pay per click + management |
| Traffic when you stop | Continues for months | Stops immediately |
| Long-term cost per lead | Falls over time | Stays flat or rises |
| Targeting control | Limited | Precise (location, audience, time, device) |
| Testing speed | Slow | Fast: great for testing offers |
| Trust & click share | High: many users skip ads | Top-of-page visibility |
Pros and cons of SEO
Advantages
- Compounding returns: rankings and content keep bringing in traffic long after the work is done.
- Lower cost per lead over time compared with paid search.
- Credibility: organic rankings build trust and brand authority.
- Visibility in AI search: well-optimised content is more likely to be cited in AI Overviews and chat assistants.
Disadvantages
- Takes months to deliver significant results.
- Rankings aren't guaranteed and algorithms change.
- Competitive keywords need substantial content and authority.
Pros and cons of PPC
Advantages
- Immediate results: appear at the top of Google today.
- Precise targeting and full budget control.
- Fast testing: learn which keywords, offers and messages convert.
- Highly measurable return on ad spend.
Disadvantages
- Traffic stops the moment your budget does.
- Costs per click keep rising in competitive industries.
- Badly managed accounts waste budget quickly.
Get the right search mix for your budget
We advise on both SEO and Google Ads and don't sell either, so our advice has no bias.
When to choose SEO, PPC or both
Choose PPC first if…
- You need leads or sales this month
- You're launching a new product, offer or promotion
- You want to test keywords and messaging quickly
- Your website is new with little authority
Choose SEO first if…
- You're a local business: local SEO and Google Business Profile often deliver outsized returns
- Your cost per click is very high
- You can invest for 6–12 months for long-term returns
- Customers research heavily before buying
Why the best strategy usually uses both
SEO and PPC work best together:
- PPC data informs SEO: keywords that convert in ads become priority SEO content.
- Double visibility: appearing in both paid and organic results increases total clicks and trust.
- Shift budget over time: start PPC-heavy, then reduce paid spend on keywords where you rank organically.
- Retargeting: PPC brings back visitors who first found you through SEO.
A common starting split for small businesses is 60% PPC / 40% SEO, moving toward the reverse as organic rankings grow. For budgeting guidance, read How Much Does Digital Marketing Cost?
SEO vs PPC by business type
The right answer changes a lot depending on what you sell and how people buy it. These are the patterns we see most often when we audit accounts.
Local service businesses
Plumbers, clinics, law firms and other local businesses usually get the quickest return from their Google Business Profile and local SEO, because the map results sit above most organic listings. Google Ads, or Local Services Ads where they're available, fill the gaps for urgent searches like "emergency electrician near me". Our local business playbook covers the details.
E-commerce stores
Shopping ads and Performance Max often drive the first sales, but margins decide how far you can push them. Category-page SEO and buying guides are what bring down your blended cost per order over time. If your ROAS looks good but profit doesn't, check your break-even ROAS with our break-even calculator.
B2B and SaaS companies
Search volume is lower and deal values are higher, so a few dozen of the right keywords matter more than thousands of visits. Paid search on competitor and comparison terms can work well, while SEO on use-case, integration and "alternatives" pages builds pipeline that keeps arriving. See the SaaS playbook.
Professional services
Accountants, financial advisers and consultancies tend to win on trust, so detailed practice-area pages and genuine expertise usually beat ads on cost per client. Paid search earns its place around deadlines and urgent needs.
Beyond SEO and PPC: other channels to compare
Search isn't the only way to capture demand, and sometimes it isn't the best one. Before you split a budget between SEO and Google Ads, it's worth asking whether these alternatives fit better:
- Paid social (Meta, LinkedIn): creates demand rather than capturing it. Better than search when people don't yet know your product category exists.
- Marketplaces and directories: Amazon, review sites and industry directories can outrank you for your own category. Sometimes the smartest SEO move is a strong listing on someone else's site.
- Email and CRM: the cheapest channel for repeat business. If half your customers never buy twice, fixing retention may beat any acquisition budget.
- AI search visibility: answers from ChatGPT, Gemini and Google AI Overviews increasingly shape shortlists. The same content that ranks well also gets cited, which is a strong argument for investing in SEO.
If you're not sure which mix fits your numbers, a marketing strategy consultant can model the options before you commit spend.
Where to go next
- SEO consulting · the consulting service behind this guide
- PPC and Google Ads consulting · account audits and campaign strategy
- Industry playbooks · how this plays out in SaaS, e-commerce, healthcare, law and finance, real estate, education, B2B and local services
- Marketing consultants by location · the US, UK, Canada, Australia, India, the UAE, Singapore and New Zealand
- Free marketing calculators · budget, ROI, break-even ROAS, CAC and LTV
Frequently asked questions
Is SEO better than Google Ads?
Neither is universally better. Google Ads delivers immediate, controllable traffic, while SEO builds long-term visibility with a lower cost per lead over time. Most businesses get the best results by using both.
Should a small business do SEO or PPC first?
If you need leads this month, start with PPC while laying SEO foundations such as technical fixes and a Google Business Profile. Local businesses with a limited budget often see strong returns from local SEO first.
Does running PPC help SEO?
PPC does not directly improve organic rankings, but PPC data shows which keywords and messages convert best, which helps you prioritise SEO content. Appearing in both paid and organic results can also increase total clicks.
How much does SEO cost compared with PPC?
PPC costs are mostly ad spend paid to Google or Meta, plus management, and stop the moment you pause. SEO costs are mostly time and expertise for technical fixes, content and authority-building, and the results keep compounding. Over the long term SEO usually delivers a lower cost per lead. See our digital marketing cost guide.
Should I hire an SEO consultant or a Google Ads agency?
Hire for the channel that matches your goal and timeline. If you need leads quickly, a Google Ads specialist can get campaigns profitable; for long-term growth, an SEO consultant builds organic visibility. An independent marketing consultant can advise on both and keep each specialist focused. Explore our SEO consulting and PPC consulting.
Does AI search change the SEO vs PPC decision?
Partly. More people now get answers from ChatGPT, Gemini and Google AI Overviews, so strong content, brand mentions and structured data matter more than ever for organic visibility. Paid search still captures high-intent searches. Our AI marketing consulting covers optimising for AI search (GEO).