Arthur Online is one of the few UK lettings platforms that publishes its prices, and that deserves saying first: most of its competitors make you book a call to learn a number. This guide works through what those published numbers mean in practice, because the tier price is the start of the calculation rather than the end of it.
Everything below is taken from Arthur's own pricing page and support documentation, checked on 10 July 2026. Prices change; verify against their site before you sign anything.
The three tiers
Arthur prices per managed unit, in three tiers, billed annually:
- Standard: £82.50 per month, including 55 units, then £1.50 per additional unit per month.
- Professional: £96 per month, including 60 units, then £1.60 per additional unit.
- Enterprise: £126 per month, including 70 units, then £1.80 per additional unit.
Two structural things follow from that shape. First, there is an effective minimum: at £82.50 a month on annual billing, entry costs about £990 a year even for a tiny portfolio. Second, the per-unit overage grows with the tier, so the gap between tiers widens as your book grows.
The maths at four portfolio sizes
Monthly cost, before any add-ons, at four common portfolio sizes:
| Units | Standard | Professional | Enterprise |
|---|---|---|---|
| 55 | £82.50 | £96.00 | £126.00 |
| 100 | £150.00 | £160.00 | £180.00 |
| 200 | £300.00 | £320.00 | £360.00 |
| 300 | £450.00 | £480.00 | £540.00 |
Worked example for the 100-unit row: Standard is £82.50 plus 45 extra units at £1.50 (£67.50), giving £150. Professional is £96 plus 40 at £1.60 (£64), giving £160. Enterprise is £126 plus 30 at £1.80 (£54), giving £180.
Volume discounts exist, but per Arthur's support documentation they apply above 300 units and only on the Professional and Enterprise tiers, so mid-sized agencies are paying rate-card prices.
The add-on list
This is the part that surprises switchers. As of July 2026, Arthur's pricing page lists nine features as "subject to additional fees":
- Electronic signing
- SMS messaging
- The Xero integration
- Marketing portals
- Credit checks
- Tenant referencing
- Zapier
- Bank feed
- Advanced analytics
None of these fees are published; each is priced on request. So a realistic budget is the tier price at your unit count, plus the add-ons your workflow actually needs, on annual billing. For a lettings agency, e-signing, referencing and the bank feed are rarely optional in practice.
It is also worth knowing what the Xero add-on means structurally: Arthur positions itself as fully integrated with Xero for accounting, which works well, but it means the accounting depth lives in Xero (a separate subscription) and the connector itself is one of the paid add-ons.
Billing terms and the trial question
Arthur bills annually. Their documentation describes monthly rolling arrangements as available, so ask about terms directly rather than assuming either way. There is no free trial advertised as of July 2026; evaluation is demo-led, which means budgeting time with a salesperson before you can try your own data.
Questions to take into the demo
Whatever platform you are evaluating, these are the questions that surface the real price:
- What is my all-in monthly cost at my current unit count, with e-signing, referencing and the bank feed included?
- What does that number become at 1.5 times my current book?
- Which of those prices are contractual, and which are "current pricing"?
- What are the exit terms, and what format does my data export in?
A note on who is writing this: we make LintelCRM, a lettings platform whose tiers include the landlord portal, tenant portal, website feed and webhooks with no feature add-on fees, priced openly on our pricing page with a 14-day trial. If you are pricing Arthur, the honest move is to run both numbers at your unit count; our side-by-side comparison carries sources and dates for every claim.