Retainer
A retainer is a long-term working arrangement between a client and an agency (or freelancer) in which the client pays a regular monthly fee for an agreed scope of services or hours. Unlike one-off projects, a retainer allows for ongoing management, optimization, and development of a website, brand, or marketing without negotiating a new contract every time. It's a partnership in which the agency knows the client's business inside out and can respond quickly and proactively.
A retainer isn't just a billing model. It's a strategic approach to working together that brings measurable benefits to your business:
- Websites without ongoing care lose performance. Vodafone showed in an A/B test that a 31% improvement in LCP led to an 8% increase in sales, but these metrics gradually deteriorate without regular maintenance (Google, Core Web Vitals Case Studies)
- Ongoing collaboration shortens response times and lowers costs. An agency that knows your project inside out can respond right away, without costly onboarding (SparkToro, 2024)
- For less than the cost of one full-time hire, you get an entire team. Retainers typically range from USD 1,000 to 10,000 a month, a fraction of the cost of in-house specialists (AgencyAnalytics, 2024)
How retainers work at Semibold
- A monthly subscription with a set number of hours
- Lower hourly rates than for one-off projects
- Unused hours can roll over to the next month
- Work on multiple tasks at once, based on your priorities
- Regular reviews of how we work together, with room to adjust
Who a retainer is right for
- Companies that need regular design and development support
- Marketing teams that want to add capacity without hiring
- Companies going through a rebrand or redesign
- Clients with long-term projects that keep evolving
- Organizations that need flexible access to design services
FAQ
What does a web agency retainer typically include?
The scope depends on the agreement, but it most often covers ongoing website edits and content updates, technical maintenance and security updates, speed and performance optimization, analytics and reporting, A/B testing and conversion rate optimization, and consulting on new initiatives. According to the AgencyAnalytics Benchmarks Report 2024, marketing agency retainers typically range from USD 1,000 to 10,000 a month, with 49% of agencies falling in the USD 1,000–5,000 range (AgencyAnalytics, Benchmarks Report, 2024).
Is a retainer worth it for smaller companies?
Yes. Even a small company with a Webflow website needs regular content updates, performance monitoring, and a response to search engine algorithm changes. Bain & Company data shows that reactive fixes (dealing with a problem only once it happens) cost many times more than ongoing prevention. A retainer also means the agency already knows the context and doesn't have to get up to speed on the project every time.
What's the difference between a retainer and a one-off project?
A one-off project has a clear start, end, and deliverable, such as a website redesign. A retainer is an ongoing collaboration with no fixed end date, focused on continuous improvement. In practice, the two models are often combined: once the redesign (the project) is done, the work moves into a retainer for managing and developing the website. The Predictable Profits benchmark (300+ agencies, 2025) confirms that agencies with a higher share of retainer revenue achieve more stable growth and higher margins (Predictable Profits, 2025).
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Sources:
- Bain & Company / HBR: The Value of Keeping the Right Customers (2014): Frederick Reichheld's research on how retention affects profitability (a 5% increase in retention = a 25–95% increase in profits)
- Predictable Profits: Agency Growth Benchmark (2025): analysis of 300+ agencies with revenue above USD 1M, retention and margins
- SparkToro: Where Agency Revenue Is Heading (2024): analysis of trends in the agency model and the shift toward mid-market retainers
- AgencyAnalytics: Marketing Agency Benchmarks Report (2024): benchmarks for retainer pricing and agency performance
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