What is the price of an SEO service?

James Brunetto

Co-founder & CMO

Last update:

October 7, 2025

If you are wondering about the Price of an SEO service offered by an agency, it is important to understand that this cost varies considerably according to several criteria. As a general rule, the SEO budget monthly for a natural referencing service provided by an agency is between €500 and €3,000 excluding VAT. However, this rate may increase depending on the complexity of your project, the level of expertise required and the services included.

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An SEO agency often offers a range of services such asSEO audit, thepage optimization, the creation of relevant content, the management of Backlinks, as well as strategies combining natural referencing (SEO) and paid (SEA), like Google Ads. By choosing a webflow seo agency, you benefit from specific expertise to optimize your site on this platform. The cost also depends on the expected return on investment, the number of pages to be optimized, and the targeted performance on search engines.

This initial overview allows you to quickly understand the current price range and the main factors that influence the Cost of an SEO service with an agency specialized in SEO. In the rest of this article, we will go deeper into the various pricing models and will provide you with concrete examples to help you anticipate your investment in a SEO strategy adapted to your goals.

Factors influencing the cost of an SEO service

The price of an SEO service depends on many factors, ranging from the nature of the services offered to the reputation of the agency. Understanding these elements is essential to accurately assess the cost of an SEO service.

Facteur Impact sur le prix
Type de service Audit SEO moins coûteux qu’une stratégie complète incluant optimisation, contenu et netlinking.
Taille & complexité du site Un site e-commerce ou technique complexe entraîne un coût plus élevé.
Expérience & réputation de l’agence Une agence réputée et expérimentée facture plus cher mais offre un ROI plus sûr.
Services complémentaires (SEA, Google Ads) L’ajout de campagnes SEA fait grimper le prix global de la prestation.

Type of SEO service

SEO agencies offer a variety of services, each with its own price. For example, an initial SEO audit may be less expensive than a comprehensive strategy that includes content creation, page optimization, and netlinking.

The addition of additional services such as Google Ads can also increase the overall price of the service. Depending on your goals, you can opt for a one-time service or monthly support, which impacts the total cost.

Size and complexity of the site

The size of the website is a determining factor in setting the cost of an SEO service. A site with a large number of pages, such as an e-commerce site, will require more work to optimize each page, which will increase the cost. In addition, the technical complexity of the site can also influence the price, as more complex sites require specific expertise and potentially more time to be optimized.

Experience and reputation of the agency or consultant

The experience and reputation of an SEO agency or consultant play an important role in determining the price. An agency with extensive experience and proven results may charge more than a beginner or less referenced agency. The expertise of a reputable agency or consultant can justify a higher cost, as it is often associated with more effective strategies and a better return on investment in the long term.

SEO pricing models

Modèle Description Fourchette de prix
Paiement à l’heure Facturation au temps passé, idéal pour des missions ponctuelles. 75 € – 200 €/h
Forfait mensuel Montant fixe avec suivi continu (audit, contenu, netlinking, optimisation). 500 € – 10 000 €/mois
Au projet Prestation unique (audit complet, netlinking ciblé, optimisation technique). 500 € – 5 000 €
Basé sur la performance Rémunération seulement si résultats concrets (positions, trafic, ROI). Variable selon objectifs

Pay by the hour

Payment by the hour is a commonly used model, especially for one-off services or consulting missions. Agencies or consultants charge an hourly rate that can generally vary between €75 and €200 per hour depending on their experience and the nature of the work. This system offers flexibility, as you only pay for the time actually spent on work on your pages or at your SEO strategy.

However, it can be difficult to get an accurate picture of the total budget before the end of the mission.

Monthly rates or packages

The most popular model is the monthly plan, where you pay a fixed amount each month for a set of ongoing SEO services. These packages can vary from a few hundred to several thousand euros, depending on the volume of work planned and the complexity of the site. This system ensures good fiscal stability and often includes a combination ofSEO audit, optimization, content creation and backlink management.

Some agencies also add SEA services for a seo complete on Google and other search engines.

Performance-based payment

Less frequent but attractive, performance-based payment involves rewarding the agency only if concrete results are obtained, such as an improvement in positions on Google, an increase in natural traffic, or a better return on investment. This model reduces financial risk for the customer, but can be complex to implement because it is sometimes difficult to accurately attribute success to isolated SEO actions, especially when several levers are used simultaneously.

Examples of costs and what to expect

Type d’entreprise Budget moyen Prestations incluses
Petite entreprise 500 € – 1 500 €/mois Audit simplifié, optimisation de quelques pages, contenu limité.
Entreprise moyenne 1 500 € – 5 000 €/mois Audit complet, optimisation technique, contenu régulier, backlinks actifs.
Grande entreprise / secteur concurrentiel 5 000 € – 10 000 €/mois (voire plus) Accompagnement global, SEO + SEA, coordination d’équipes, optimisation avancée.
Projets ponctuels 500 € – 5 000 € Audit détaillé, campagnes de netlinking, optimisations techniques ciblées.

Small business costs

Small businesses generally have a limited budget for their SEO projects. They can expect to invest between €500 and €1,500 per month for basic SEO services, often including a simplified SEO audit, the optimization of a few key pages, and the creation of moderate content. This type of service aims to generate qualified traffic gradually, by focusing on keywords that are not very competitive.

This budget is ideal for structures seeking to improve their local or sectoral visibility without engaging in a very aggressive strategy.

Costs for medium to large businesses

For medium to large businesses, the needs are more complex and require a global approach. Monthly budgets then generally vary between €1,500 and €10,000, or even more in some very competitive sectors. These services include comprehensive support with a thorough audit, advanced technical optimization, regular content creation, active backlink management, and sometimes the integration of a complementary SEA strategy.

The coordination of internal or external teams and the multiplicity of pages to be optimized justify these higher costs, which aim to guarantee a significant and sustainable return on investment on Google and other search engines.

Specific projects and ad hoc consultations

In addition to monthly contracts, it is common to use one-off services such as detailed SEO audits, targeted technical optimizations or netlinking campaigns. These interventions have a price that can vary between €500 and €5,000 depending on the complexity of the project and the scope of the recommendations.

This option is suitable for companies wishing to test a collaboration with an SEO agency, or for those who already have a solid base and want to strengthen certain specific aspects of their SEO.

Conclusion

In summary, the price of an SEO service varies according to several factors, including the type of service, the size of the site and the experience of the agency. Pricing models include pay-by-the-hour, monthly plans, and sometimes performance-based payment. To succeed, combine an effective SEO strategy with an adapted budget, and remember to regularly optimize your content to improve your visibility on search engines. By following these tips now, you can reach your goals in terms of qualified traffic and return on investment.

FAQS

What are the different types of billing for an SEO service?

Billing types for an SEO service include fixed price, hourly, results-based pricing, project-based pricing, and monthly subscription pricing. The fixed price covers a specific set of tasks, billing by the hour corresponds to the time spent, and performance is based on goals achieved. The monthly subscription ensures continuous monitoring.

What factors influence the price of a natural referencing service?

Factors include site size and complexity, industry competition, geographic goals, and return on investment expectations. These elements determine the level of resources required to optimize SEO.

How to choose between a freelance SEO, an agency or internal management according to your budget?

Choosing between a freelance SEO, an agency, and in-house management depends on your budget. Freelancers are economical, ideal for specific needs. Agencies offer comprehensive services but cost more.

In-house management requires internal resources but can be profitable in the long run.

Does the price of an SEO service include content creation and netlinking?

The price of an SEO service may include content creation and netlinking, but this is not systematic. Often, a complete service includes audit, optimization, text writing and netlinking, generally in the form of monthly packages between €900 and €3000 depending on the size of the project.

These services are billed separately or combined depending on the agency.

How much does an SEO service cost on average?

  • Small business : 500€ — 1,500€/month.
  • Medium-sized business : €1,500 — €5,000/month.
  • Large company/competitive sector : 5,000€ — 10,000 €/month (or more).
  • One-off audit or specific project : €500 — €5,000.

How long does it take to see SEO results?

On average, 3 to 6 months are necessary to observe significant progress. In highly competitive sectors, this can take 6 to 12 months.

What is the difference between SEO and SEA (Google Ads)?

  • SEO : a long-term, sustainable strategy, with no cost per click.
  • SEA : immediate results, but dependent on the advertising budget.
    Combining the two is often the most effective.

Is it possible to stop an SEO service once launched?

Yes, but not recommended. SEO requires continuity: stopping abruptly can lead to a gradual loss of visibility and traffic.

How to measure the ROI of an SEO strategy?

  • Key indicators : Google positions, organic traffic, conversion rate, revenue generated.
  • Tools : Google Analytics, Google Search Console, SEMrush, Ahrefs.

Is SEO different for a Webflow site?

Yes. Webflow has technical specificities (tags, performances, code structure). An agency specialized in Webflow SEO knows how to properly optimize the platform without blocking design creativity.

How does the referencing of a website on search engines work?

The referencing of a site is based on several criteria:

  • Positioning : your website should appear in first results and ideally on the front page Of results pages.
  • Search engine algorithms : Google and other engines analyze the popularity, theindexing and the quality of web pages.
  • Natural referencing (SEO) : it includes technical optimization (WordPress or Webflow), content creation and reputation via backlinks.
  • Paid referencing (SEA/Google AdWords) : sponsored campaigns that allow you to quickly appear at the top of the results via AdWords.
  • Competitors & reputation : the more your competitors invest in SEO/SEA, the more you will have to work on your web marketing With a SEO agency Or a referrer to remain competitive.

In summary, good reference a website consists in optimizing its content and structure so that search engines direct a maximum of requisitions qualified to your site

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