Per domain SEO pricing: what you pay for and when it beats per-seat

Per domain SEO pricing means you pay a flat subscription for each website you manage, regardless of how many people log in. As of 2026, it usually suits agencies with several clients and small teams, because costs rise when you add sites rather than staff. Per-seat pricing charges for each user instead, which tends to favour a solo founder with one site.

The same agency, two pricing models

Suppose a small UK agency manages SEO for five client websites and has four people who need access to the tool. These figures are illustrative assumptions, not real quotes from any vendor:

• Per-seat plan: £30 per user per month, with each user able to access all five sites.
• Per-domain plan: £40 per domain per month, with unlimited users.

Here is the arithmetic:

1. Per-seat cost: 4 users × £30 = £120 per month.
2. Per-domain cost: 5 domains × £40 = £200 per month.

On these assumptions, per-seat is cheaper by £80 a month. Now change only one variable: the agency hires two more people, taking the team from four to six, with the same five clients.

1. Per-seat cost: 6 users × £30 = £180 per month. The per-domain cost stays at £200.

The gap narrows to £20. At eight users, per-seat would cost £240 and overtake per-domain. The model that is cheaper depends on the ratio of people to websites, not on the headline price. Real plans rarely look this tidy: per-seat tools often cap the number of sites or keywords per user, and per-domain plans often cap articles, audits or tracked keywords per site. We compare this in more detail in per domain SEO software vs per seat pricing.

The rule the example shows: per-domain pricing wins when your user count is high relative to your site count, and per-seat wins when it is low.

How per domain SEO pricing actually works

A "domain" is normally one website address, such as yourbusiness.co.uk. Each domain you add gets its own bundle of allowances. What sits inside that bundle varies between providers, so the label "per domain" tells you very little on its own.

What a per-domain fee typically bundles

• Keyword research and position tracking for that site.
• Technical site audits, which check issues such as broken links, slow pages and missing metadata.
• Content generation or publishing allowances, often expressed as a number of articles per month.
• Search console or analytics connections for that site.

Illumae follows this model: one subscription per domain, covering AI article generation alongside keyword research, audits, position tracking, Google Search Console integration, AI visibility tracking and automated publishing, with no extra charge for additional team members.

Why vendors price this way

Vendors price per domain because the cost of serving a customer is driven by the site: crawling pages, pulling ranking data and generating content all scale with the website, not with the number of logins. For the customer, this removes the awkward trade-off of rationing logins so that a freelancer, a client or a junior colleague can see reports.

Subdomains, staging sites and country versions

Check how a vendor defines a domain. A blog on blog.example.co.uk, a staging site, or a separate .com for overseas customers may count as separate domains or may not. Google's Search Central documentation treats subdomains and subfolders as ways of structuring one site, but a pricing page may count them differently. Ask rather than assume.

Where to put your effort first

If you are evaluating plans, work through these in priority order:

1. Count your domains and your users separately. Pricing only makes sense once you know both numbers, including likely changes over the next 12 months.
2. Find the per-domain limits. Look for caps on tracked keywords, audited pages and articles. A cheap domain fee with tight caps can cost more than a pricier plan that fits.
3. Check the definition of a domain. Subdomains and staging sites are where surprise charges appear.
4. Compare against your current tool stack. Add up what you pay now for separate keyword, audit, tracking and writing tools. Our guide to all-in-one SEO tools versus multiple tools walks through that comparison.
5. Test with one domain first. A single pilot site shows whether the output quality justifies the fee before you commit every client.
6. Check VAT. Many UK business software prices are quoted excluding VAT. If you are VAT-registered you can usually reclaim it; if you are not, it is a real cost. Confirm the current rules with HMRC.

Who benefits most, and who does not

Agencies with growing client lists

Agencies with several clients gain predictability. Adding a client adds a known cost you can build into your retainer, and you can usually pass it on or absorb it in your margin. Tracking that work is easier when everything sits in one place; see how to track SEO performance for clients.

Solo founders with one website

For a founder with a single site and no team, the per-seat versus per-domain question barely matters because the numbers are the same: one user, one domain. The question becomes what the bundle includes. If you have no dedicated writer, a plan that includes content generation and publishing may replace a separate writing tool. Our roundup of the best SEO tools for small businesses covers what to prioritise.

Large in-house teams with one site

A company with one website and a big marketing team is where per-domain pricing can look especially good, since extra seats cost nothing. Conversely, a team of two managing ten microsites may find per-domain costs climb quickly.

The trade-offs of paying per domain

Per-domain pricing is not automatically the better deal, and a few limits are worth knowing before you commit.

• Costs scale with sites, not value. A tiny client site with almost no traffic costs the same as a busy one. If you manage many low-value sites, the fee per useful result may be high.
• Caps can bite. Allowances on keywords, audits and articles are where providers recover cost. Heavy users may need a higher tier.
• Automation does not replace judgement. AI-generated content can save time, but search engines judge quality, and Google's Search Central guidance says that using automation primarily to manipulate rankings breaks its spam policies. Review output before publishing; our piece on what separates good content automation from a Google penalty explains the line.
• No tool guarantees rankings. Google's own guidance states that nobody can guarantee a number one position. Treat any pricing page that implies otherwise with suspicion, and be aware that the UK Advertising Standards Authority expects marketing claims to be capable of substantiation.
• Switching has a cost. Moving historic ranking data, connected accounts and scheduled content between tools takes time, so check export options and contract length before you commit.

The single thing to verify before you pay: ask for the written definition of a domain and the exact monthly limits on tracked keywords, audits and articles for that plan, then rework the five-client sum above with the real numbers.