What each one actually is.
RingCentral is a fully-bundled cloud telephony service. You pay per user, per month, indefinitely. RingCentral runs everything — the PBX, the hosting, the SIP, the apps, the call queues, the call recording, the analytics. One vendor, one bill, one global support organisation. UK pricing is published in GBP on ringcentral.co.uk.
3CX is licensed PBX software. You buy a yearly licence priced per Simultaneous Call (SC), not per user. You run the software somewhere (on-prem, your cloud, 3CX cloud, partner cloud), connect it to SIP trunks bought separately, and plug in handsets. Most UK SMEs deploy 3CX through a managed partner who handles the whole stack.
Pricing — 25 users.
Typical UK SME on PRO tier 3CX (the most-deployed configuration) versus RingCentral Advanced (the middle tier most UK firms land on). 24-month contract assumed, all costs ex-VAT.
| Line item | RingCentral Advanced | 3CX (Port Phones managed) |
|---|
| Per-user monthly fee | RingCentral£24.99 / userPublished list, ringcentral.co.uk. Includes calling, recording, integrations. | Port Phones~£8 / userAll-in (licence + hosting + SIP + support). See honest pricing for the decomposition. |
| Monthly total (25 users) | RingCentral£625 / month25 × £24.99. Hardware extra (or BYOD). | Port Phones~£200 / monthPRO 8 SC licence + UK hosting + 4-channel SIP + support, all bundled. |
| Setup / handsets (one-off) | RingCentral£0–500 + handsetsTheir "implementation fee" varies; some tiers waive it. | Port Phones~£2,500–3,50025 × Yealink T46U at ~£103 + install + training + porting. |
| 24-month total | RingCentral~£15,500£625 × 24 + ~£500 setup. | Port Phones~£7,800£200 × 24 + £3,000 setup. |
RingCentral pricing snapshot May 2026 from ringcentral.co.uk. 3CX pricing sourced from our actual deployment stack — see honest pricing for the full breakdown including underlying component costs.
Pricing — 80 users.
The per-user difference compounds at scale. For an 80-user firm on RingCentral Advanced versus managed 3CX on PRO 16 SC:
| Line item | RingCentral Advanced | 3CX (Port Phones managed) |
|---|
| Per-user monthly fee | RingCentral£24.99 / userSame list price as 25 users. | Port Phones~£7 / userScales down slightly at larger user count. |
| Monthly total (80 users) | RingCentral£1,999 / month80 × £24.99. | Port Phones~£560 / monthPRO 16 SC + larger SIP trunk + support. |
| 24-month difference | ~£34,500£1,999 − £560 = £1,439 / month difference, × 24 months. Real money at SME scale. |
Where RingCentral wins.
Five honest reasons to pick RingCentral over 3CX:
- You want zero operational ownership. RingCentral runs everything. You don't pick a partner, you don't think about hosting, you don't deal with SIP. The price is the price; the support is in their hands.
- You're a single-vendor procurement shop. Some procurement functions (especially in regulated sectors, or in firms with strong global IT policy) require one accountable vendor across phones, video, messaging, and contact centre. RingCentral checks every box; 3CX requires a partner relationship.
- You need their contact-centre suite (RingCX). RingCX is a strong inbound contact-centre product — WFM, skills routing, omnichannel. 3CX AI tier has skills routing and queues but isn't a peer to RingCX for 50+ agent contact centres.
- You're above 500 users. Per-seat economics flip at very large user counts. RingCentral's enterprise tier negotiates per-seat down meaningfully at scale; 3CX is still cheaper, but the operational overhead of managing 500-user 3CX yourself (or paying a partner to) starts to matter.
- You want US-style polish. RingCentral's UI, mobile app, and onboarding flow are best-in-class. 3CX's UI is functional, well-engineered, and improving. If your partners or sales team are accustomed to consumer-tier polish, RingCentral feels more natural.
Where 3CX wins.
Five honest reasons to pick managed 3CX over RingCentral:
- 2–4× lower TCO at SME scale. The £15k vs £8k 24-month figure at 25 users is real. At 80 users it's £48k vs £14k. SMEs that spend the difference on payroll, marketing, or capacity buy themselves real growth.
- Per-system pricing, not per-user. Adding a new user to 3CX costs you a handset and 30 minutes of admin. Adding a user to RingCentral costs you £24.99/month — for life. Growth-stage firms pay this penalty repeatedly.
- UK partner relationship. Your 3CX partner is a small UK company that picks up the phone. RingCentral's UK customer success is a global support queue. Both can resolve tickets; one is a relationship, the other is a transaction.
- Recording at the standard tier, not the premium tier. 3CX includes call recording on PRO (the standard SME tier). RingCentral's "Core" tier doesn't include on-demand recording — you need Advanced (£24.99) for that. This catches a lot of professional-services firms who'd otherwise pick Core.
- UK data residency by default. 3CX deployed through a UK partner with UK hosting keeps every recording and CDR on UK soil. RingCentral data residency for UK customers is configurable but defaults to EU regions; ask before signing if regulated data matters.
Who should pick which.
Three honest decision rules:
- Pick RingCentral if: you're above 200 users, you need RingCX-class contact-centre features, you have strong procurement preference for single global vendors, or you genuinely value polish over price.
- Pick managed 3CX if: you're 10–200 users, you care about TCO at SME scale, you want a UK partner relationship, you need call recording at standard tier, or you value transparent line-item pricing.
- Pick DIY 3CX if: you have in-house Linux capability and want to capture the partner-layer margin yourself. Roughly 5–10% of UK 3CX deployments are run this way.
What we'll tell you at audit.
If you book a free audit with us, three things happen. One, we look at your actual numbers — current monthly spend, user count, call volume, sector — and compare them against both 3CX-managed and RingCentral published pricing. Two, if RingCentral is genuinely a better fit for your situation (contact-centre heavy, very small, single-vendor procurement), we'll tell you and pass the audit notes to you. Three, if managed 3CX is the right pick, we give you a transparent line-by-line quote that you can audit against our public honest-pricing page.
