SEO PPC is shorthand for buying both sides of the search results page: earned positions in the unpaid listings and paid positions in the ad slots above and below them. The two channels answer the same demand on entirely different terms. Paid search bills per click and can be switched on this afternoon. SEO is an investment with no guaranteed delivery date and no off switch that returns your money. Most buyers want to know which to fund first, whether one agency should run both, and how to tell whether the combination is working. This page answers those in order, using what Google publishes about each channel rather than what a vendor prefers to be true.
What each channel actually buys
Paid search buys placement, immediately and by the click. You set an average daily budget, and Google explains that actual spend on a given day can exceed that average by up to twice, with the monthly charge capped at the average number of days in a month, 30.4, multiplied by your average daily budget, and any overdelivery beyond that credited back. Turn it off and the traffic stops that afternoon. SEO buys position in the unpaid results, which cannot be purchased directly: Google's hiring guidance states plainly that no one can guarantee a number one ranking, and its starter guide notes that some changes take effect within hours while others can take several months. The resulting asset persists after you stop paying, but it also decays, and it cannot be scheduled. One is a variable cost with a predictable delivery date; the other is an investment with an uncertain one.
What Google publishes about the paid side
Enough to make most vendor mystique unnecessary. Google describes Quality Score as a diagnostic tool on a scale of 1 to 10 at the keyword level, calculated from three components: expected clickthrough rate, ad relevance and landing page experience, each rated above average, average or below average against other advertisers whose ads showed for the same search over the previous 90 days. Google states that Quality Score is not a key performance indicator, should not be optimised or aggregated with the rest of your data, and is not an input in the ad auction. That paragraph disposes of a great deal of agency reporting built around raising a number. What the score is genuinely useful for is diagnosis: a below average landing page experience tells you where to look, and that is usually the same page where organic work pays back as well.
Running both without paying twice
The overlap is real and it is mostly the landing page. Improving the page a paid click arrives on raises landing page experience on the paid side and is the same work that helps the page earn unpaid visibility. Search term data from your ad account is the cleanest available evidence of what buyers actually type and which phrasings convert, and it should be feeding the content plan; running the two channels through separate agencies with no data shared is the most common way that value gets thrown away. Where the channels genuinely compete is at the top of the page for terms you already rank first for, and there the honest answer is to test: pause ads on those terms for a defined window and measure total enquiries rather than paid enquiries. Sometimes the ad is buying clicks you would have received anyway, and sometimes it is defending against a competitor's ad sitting above you.
Which to fund first
Fund paid search first when you need revenue this quarter, when you are testing whether a market responds at all, or when your seasonality is sharp enough that waiting is not an option. Fund SEO first when click prices in your category are high enough that renting traffic indefinitely will never work, when the site is technically weak enough that both channels suffer for it, or when the buyer's research phase is long and their questions cannot be answered inside an ad. Most businesses that can afford both should run a small, tightly targeted paid programme for demand capture while the SEO is built, then decide with their own data rather than with doctrine. When you buy them together, insist on one report showing total enquiries and cost per enquiry across both channels, because separate reports let each channel claim the same customer.
Questions people ask about seo ppc
Is PPC cheaper than SEO?
Neither is reliably cheaper; they cost differently. Paid search is a per-click cost that stops producing the day you stop paying. SEO is a mostly fixed monthly cost with an uncertain delivery date and a result that persists. Compare them on cost per enquiry over a window long enough for the SEO to have landed.
Does running Google Ads help my unpaid rankings?
No. Paid and unpaid results come from separate systems, and buying ads does not improve organic rankings. The genuine overlaps are indirect: ad data tells you which queries convert, and improving landing pages helps both channels at once.
Should one agency run both?
One agency makes data sharing easy and reporting coherent, which is worth a lot. Two specialists can be better on craft, but only if you force them to share search term data and agree a single conversion definition. The failure mode with two agencies is duplicate credit for the same enquiry.
Can I control what I spend on ads each month?
Yes, within limits Google publishes. Your average daily budget can be exceeded on a given day by up to twice, but you are not charged more than the monthly charging limit, which Google describes as 30.4 multiplied by your average daily budget, with overdelivery beyond that credited back to the account.