Short answer
Pay a fixed price when the scope can be written down, and a retainer when the work is continuous. Swedish agencies publish hourly rates of 850–1,800 kr and ongoing maintenance at 3,000–15,000 kr a month. A fixed price moves the overrun risk to the supplier, and you pay a margin for that.
The question usually gets asked as a matter of taste, and it is really an allocation of risk. Whoever carries the risk that the work runs long is also the one pricing it, and that decides which model comes out cheaper for you.
Should I pay a fixed price or a retainer?
Fixed price when the scope can be described up front: a site with a known page list, known languages and a known deadline. A retainer when the direction is still forming or the work continues over time — content, iteration, maintenance. A build is usually the first and operations are always the second.
What a fixed price actually buys
A fixed price moves the overrun risk from you to the supplier. That certainty costs: the margin matches how unsure the supplier is about the scope. The more precisely the brief describes pages, languages and integrations, the smaller the margin gets — which makes time spent on the brief the cheapest hour in the whole project.
What is a reasonable hourly rate for a web agency?
The Swedish market overview puts Swedish web agencies at 850–1,800 kr an hour, depending on specialization and geography. An hourly rate says nothing on its own, though: it becomes comparable only alongside an estimate of hours. Always ask for both, and compare the product of the two.
When a retainer is the right shape
The same overview puts ongoing management and support at 3,000–15,000 kr a month, and notes that more agencies now offer that shape. It suits work that continues: content going out, measurement followed up, security updates, and the small adjustments that otherwise pile up for a year.
The trap in each model
- Fixed price: every change becomes a negotiation, so agree the price of a change up front
- Retainer: the work expands until it fills the hours, so agree what gets delivered
- Time and materials: you carry the estimate risk, so agree a cap and a checkpoint
How to write the contract so the model holds
- What a change outside scope costs, as a figure or an hourly rate
- How often the work is reviewed, and what happens on an overrun
- Which deliverables are included each month under a retainer
- Who owns the code and the content when the agreement ends
Four lines are enough, and they are worth more than another ten pages of terms. Here the price is fixed across five tiers before the work starts — they sit on the pricing page, and what each tier contains is described under websites. Ask every supplier to write their model down the same way, and the quotes become comparable.
Common questions
- What is a reasonable hourly rate for a web agency?
- The Swedish market overview puts it at 850–1,800 kr an hour, depending on specialization and geography. The figure only becomes useful alongside an estimate of hours: 1,800 kr an hour for forty hours is cheaper than 900 kr an hour for a hundred.
- Why does a fixed price come out higher than the hours suggest?
- Because the supplier carries the risk that the work runs long, and prices that uncertainty. The margin shrinks as the brief gets clearer, which is why half a day spent on the page list, the languages and the integrations pays for itself straight away in the quote.
- What does a monthly retainer usually cover?
- Content publishing, measurement, security and platform updates, and smaller adjustments. The market overview puts it at 3,000–15,000 kr a month. Ask for a list of deliverables per month, or what you have is an availability agreement wearing a maintenance label.
- How do I keep change requests from eating a fixed-price project?
- Agree the price of an out-of-scope change before the work starts, and decide who is allowed to approve one. Each change then becomes a decision with a known cost, and the biggest calendar risk shifts to your own response time.
- Can I mix the models in one engagement?
- Yes, and it is the most common good answer: a fixed price on the build, a retainer on operations afterwards. A build has a describable scope and operations never do, so each part gets the model that matches its risk.
- Which model gives the most predictable budget?
- A fixed price for the build, because the sum is known before the work starts. For the year after launch, a retainer with a stated monthly cost gives the same predictability, while time and materials leaves the budget open until the invoice arrives.
Sources
- Swivrr — Hitta webbyrå 2026
The 850–1,800 kr hourly rate at Swedish web agencies, and 3,000–15,000 kr a month for ongoing management and support.
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