The honest answer: it depends on how soon you need leads
The google ads vs seo debate gets framed as a war, but they answer two different questions. Google Ads answers "can I buy a customer today?" SEO answers "can I own this search forever?" If your business needs enquiries this month to keep the lights on, that urgency points one way. If you can invest patiently in an asset that compounds, it points the other.
Most small businesses we speak to assume they must choose. You rarely do. The smarter question is sequencing: which one do you start, what does each cost to run, and at what point do you shift the budget. Get the order right and you avoid paying for clicks forever while your organic rankings quietly do nothing.
How Google Ads actually works (and what it really costs)
Google Ads is an auction. You bid on a keyword, and when someone searches it, Google decides whose ad shows based on your bid and a quality score. You pay per click, not per impression. The moment you pause the campaign, the traffic stops dead. There is no residual benefit.
Costs in the UK vary wildly by industry. A click for a local trade like "emergency plumber" might run £4 to £9, while competitive sectors like legal or insurance can hit £20 to £50 a click. Plan on a minimum of £400 to £800 a month in ad spend to gather meaningful data, plus management time or an agency fee on top.
- check_circleSpeed: leads can arrive within hours of launching
- check_circleControl: switch on, off, up or down at any time
- check_circleTargeting: location, device, time of day, keyword intent
- check_circleThe catch: spend stops, traffic stops, with nothing banked
How SEO works (and why it is slower but cheaper over time)
SEO earns you a position in the unpaid results by proving to Google that your page deserves to rank. That means relevant content, a fast and well structured site, and signals of trust like reviews and links from other sites. You do not pay Google per click. You pay once, in effort or fees, and the ranking keeps working.
The trade off is time. A new site competing in a local market typically takes three to six months to see movement, and longer for competitive national terms. But once you rank, the cost per lead trends towards near zero. A page that took us a week to build and optimise can deliver enquiries for years with light upkeep.
The real timelines, side by side
Setting expectations is where most owners get burned. Ads agencies promise instant results and deliver, but the bill never stops. SEO agencies sometimes promise page one in 30 days, which is a red flag, because they cannot control Google's timeline. Honesty about timelines is the first thing to look for in any provider.
As a rough guide: Google Ads produces measurable enquiries in week one and reaches stable performance after four to six weeks of optimisation. SEO produces early signs in month two or three, meaningful traffic by month six, and its strongest returns from month twelve onwards as authority builds.
Comparing the cost per lead over 12 months
Think in cost per lead, not monthly spend. With Ads, your cost per lead is roughly fixed: if clicks cost £5 and one in twenty converts, each lead costs around £100, in month one and month twelve alike. The figure barely improves no matter how long you run.
With SEO, the cost per lead starts sky high because you have invested before any traffic arrives. But by month nine or ten, the same investment is spread across a growing stream of free clicks, and your cost per lead can fall below £10. That crossover point is the entire financial case for SEO.
How to split a tight budget between the two
If you have, say, £1,000 a month, do not split it evenly from day one. Front load Ads to generate cash flow and learn which keywords actually convert, then redirect that hard won data into your SEO. The search terms that make you money in Ads are exactly the terms worth ranking for organically.
A practical starting split for a new local business is around 70 percent Ads and 30 percent SEO foundations in the first quarter, shifting towards 40/60 by month six as rankings climb. Treat Ads as the engine that funds the slower, cheaper machine you are building underneath it.
- check_circleMonths 1 to 3: weight towards Ads for immediate leads and keyword data
- check_circleMonths 4 to 6: build SEO content around your best converting Ads keywords
- check_circleMonths 7 onwards: scale back Ads on terms you now rank for organically
- check_circleAlways keep some Ads live for high intent terms you may never rank top for
When to favour one over the other
Lean towards Ads if you are brand new, have a time sensitive offer, operate in a seasonal trade, or are testing a new service before committing. Ads let you validate demand without waiting half a year for an answer.
Lean towards SEO if your margins are tight, your customers research before buying, or you are building a business you intend to own for years. Service businesses with high lifetime customer value almost always benefit from owning their rankings rather than renting clicks indefinitely.
The mistake that wastes the most money
The single biggest waste we see is sending paid traffic to a weak website. You can win the auction, pay for the click, and still lose the customer because the landing page is slow, confusing, or has no clear call to action. Ads amplify whatever your site already does, good or bad.
Before spending a penny on clicks, make sure the page they land on loads fast, states the offer clearly, and makes enquiring effortless. Whether you choose Ads, SEO, or both, a site built to convert is the foundation that makes either channel pay for itself.
Frequently asked questions
Is SEO or Google Ads cheaper in the long run?expand_more
SEO is almost always cheaper over a year or more. Ads keep a near fixed cost per lead for as long as you run them, while SEO front loads the cost and then delivers traffic at close to zero marginal cost once you rank. The crossover usually arrives somewhere between month six and month ten for a local business.
How long before SEO starts working?expand_more
For a new local site, expect early ranking movement in two to three months, meaningful traffic by month six, and the strongest returns from month twelve. Competitive national keywords take longer. Anyone promising page one in 30 days is overselling, because the timeline depends on Google, not the agency.
Can I run Google Ads and SEO at the same time?expand_more
Yes, and for most small businesses that is the ideal approach. Ads bring leads immediately and reveal which keywords actually convert, while SEO builds a cheaper long term channel underneath. Use the conversion data from your Ads campaigns to decide which pages and keywords to target organically.
What is a realistic monthly budget to start with?expand_more
Plan for at least £400 to £800 a month in Google Ads spend to gather useful data, plus management. For SEO, budgets vary, but a meaningful local campaign typically runs from a few hundred pounds a month upwards. The exact figures depend on how competitive your industry and location are.
Should I pause Ads once my SEO ranks?expand_more
Scale them back rather than killing them. For keywords where you rank in the top organic spots, you can reduce Ads spend safely. But keep some Ads running on your highest intent commercial terms, where paid and organic together capture more of the page and a competitor cannot easily outbid you.