SEO fundamentals

SEO vs PPC : where to spend first

Published 17 August 2026 · Updated 26 August 2026 · 6 min read

Ads buy attention now and stop when you stop paying. SEO earns it slowly and keeps most of it. The right answer usually involves both, in a particular order.

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This is not a rivalry, whatever agencies specialising in one or the other imply. They do different jobs on the same results page, and the sensible question is sequencing rather than choosing.

How they compare

	Paid search	SEO
Time to results	Same day	Three to nine months
Cost behaviour	Ongoing, rises with competition	Front loaded, falls per enquiry over time
Stops when you stop	Immediately	Gradually, over months
Testing speed	Excellent	Slow
Trust from users	Lower on informational searches	Higher
Control	Precise	Indirect

When ads are the right first spend

You need enquiries within weeks.
You are launching something new and need to know whether demand exists.
Your market is seasonal and the season is now.
Your organic rankings are years away because the market is dominated by established sites.
You want to test which keywords convert before paying to rank for them.

When SEO is the right first spend

Your margins cannot absorb a rising cost per click.
Most of your market searches informationally before buying, where ads perform worst.
You are a local business and the map pack is the prize, which is often free to win. See the local SEO guide.
You are building an asset you want to own rather than rent.
You already rank for some things and are leaving obvious opportunities unclaimed.

Running both properly

Use ads as keyword research. Three months of ad data tells you which phrases convert, which is far more reliable than volume estimates. Feed that into your keyword strategy.
Do not switch ads off the day you rank. Holding both positions increases total clicks, and rankings move.
Reduce ad spend selectively. Pull back on terms where you rank first organically and the ad is buying clicks you would get anyway.
Keep bidding on your own brand if competitors do. It is cheap and it protects enquiries you already earned.

The three year picture

Ads cost roughly the same per enquiry in year three as in month one, and often more as competition increases. SEO costs a great deal per enquiry in year one and very little by year three, because the pages keep working. That crossover is the entire commercial argument, and it is why the decision should be modelled over years rather than months. Measuring SEO ROI sets out the calculation, and SEO pricing covers what the investment side looks like.

If you want to compare what each would cost you specifically, request quotes from Bristol SEO agencies and ask each one directly where they would put the first £1,000. The answers vary usefully.

Good to know

Frequently asked questions

Does running Google Ads help my organic rankings?

No. Google has stated repeatedly that ad spend does not influence organic results. Ads do help indirectly, by generating data, awareness and branded searches, but there is no direct ranking benefit.

What percentage of clicks go to ads?

It varies enormously by search type. For high intent commercial searches, ads take a substantial share. For informational and local searches, organic results and the map pack dominate.

Can I afford both?

On a small budget, usually not well. Splitting £600 a month across both tends to underfund each. Pick the one that matches your timeframe, do it properly, and add the other when budget allows.

Should the same agency handle both?

It helps with coordination, particularly on keyword data and landing pages. What matters more is whether they are genuinely good at both, rather than selling one and tolerating the other.

Written by the CompareSEO Bristol editorial team. We are an independent directory and we do not sell SEO services, so nothing here is written to win your business. Read our methodology for how we compile and check what we publish.

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More on how seo works

Start here What is SEO? A plain English guide SEO is the work of making it easy for search engines to find, understand and trust your website, so that people looking for what you sell arrive on it. 9 min read How long does SEO take to work? Three to six months before movement, six to twelve before it is commercially meaningful. Anything faster is usually either luck or a very uncompetitive market. 6 min read Keyword research for business owners Keyword research is not about finding popular phrases. It is about finding the phrases that a person ready to buy from you would actually type. 7 min read On page SEO basics On page SEO is everything you control on the page itself. It is also the part with the best return, because nobody has to give you permission to fix it. 7 min read Technical SEO explained Technical SEO is the plumbing. It rarely wins you rankings on its own, and it can quietly prevent everything else from working. 7 min read Link building explained A link is another site vouching for yours. That is why it works, and it is also why buying them in bulk does not. 7 min read

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