Capium vs Xero UK 2026: Which Should You Choose?

Capium and Xero both serve the UK accounting market, both are HMRC-recognised across MTD for VAT and MTD for ITSA ahead of the April 2026 mandate, and both run in the browser. They diverge on scope: Capium is a UK-only practice suite bundling bookkeeping, accounts production, CT600, SA100, payroll, practice management and CRM under one login; Xero is a market-leading cloud bookkeeping platform with a 1,000-app ecosystem that pairs with separate tools for tax filing and practice management. Visit Capium for a free suite trial, or Visit Xero for a 30-day trial.

Quick verdict

• Capium is best for UK accounting practices in the 50 to 500 client range that want a single integrated supplier covering bookkeeping, accounts production, CT600, SA100, payroll and workflow without stitching multiple subscriptions together.
• Xero is best for UK SMEs, limited companies, freelancers and growing service businesses (and the practices that support them) wanting the deepest UK app ecosystem, free open banking feeds and proven cloud bookkeeping at the per-business level.

At a glance

Feature	Capium	Xero
Pricing from	£140/month base + £20/module (small tier)	£15/month (Ignite plan)
Target user	UK accounting practices	UK SMEs, freelancers, practices
Deployment	Cloud (Microsoft Azure)	Cloud
Country focus	UK-only	UK with global product
MTD for VAT	HMRC-recognised	HMRC-recognised
MTD for ITSA (April 2026)	Functionality in place	HMRC-recognised
Accounts production (FRS 102, 105)	Built-in module	Via Xero Tax (partner only) or third-party
Corporation tax (CT600)	Built-in module	Via Xero Tax (partner only)
Self assessment (SA100)	Built-in module	Via Xero Tax (partner only)
Payroll	Built-in module, RTI, auto-enrolment	Add-on, £1.50/employee/month
Practice management	Built-in premium module	Pair with Karbon, Senta or AccountancyManager
Multi-currency	Yes	Comprehensive plan and above
Bank feeds	TrueLayer Open Banking, £1.50 + VAT per feed/month	Open banking, free across all plans
App marketplace	Limited	1,000+ apps
Users	Unlimited on every base plan	Unlimited on every plan
Contract	12 months, 30 days notice	Monthly, no minimum

Pricing compared

The two products price on completely different models, so a like-for-like comparison only works once you decide whether you are buying for a practice or for a single business.

Capium pricing

Capium charges a base plan banded by client count, then adds modules. Prices exclude VAT.

• Small: £140/month, up to 100 clients.
• Medium: £280/month, up to 300 clients.
• Large: £420/month, up to 500 clients.
• Enterprise: Custom quote for 700+ clients.

Standard modules (Bookkeeping with MTD VAT, Accounts Production, Corporation Tax, Self Assessment, Payroll, MTD ITSA, CapiSign) are £20/month at small, £40 at medium, £60 at large. Premium modules (Practice Management, Company Secretarial, Time and Fees) sit at £40 to £50/month at small. Bank feeds cost £1.50 + VAT per feed per month. Contract is 12 months with 30 days notice. Free setup included.

Xero pricing

Xero charges per business subscription. UK plans for May 2026:

• Ignite: £15/month. Submit VAT and MTD ITSA, no payroll, no multi-currency.
• Grow: £28/month. Unlimited invoices, bills, multiple users.
• Comprehensive: £47/month. Adds multi-currency, expense claims, analytics.
• Ultimate: £55/month. Adds projects, batch payments, advanced analytics.

Payroll is £1.50 per employee per month on Grow and Comprehensive, £1 on Ultimate, capped at 200 employees. The CIS construction add-on is £5/month. Open banking feeds are free across every plan. Practices on the Xero Partner programme get discounted client subscriptions plus free Xero HQ, Xero Tax and Workpapers.

Worked example: a 50-client UK practice

A 50-client sole practitioner on Capium’s Small base plan plus Bookkeeping, Accounts Production, Corporation Tax, Self Assessment and Payroll pays approximately £140 + (5 x £20) = £240/month + VAT. Add Practice Management at £40 and 30 bank feeds at £1.50 and the total lands near £325/month + VAT, or roughly £6.50 per client.

The same practice on Xero does not centralise software costs at the firm: each client needs their own Xero subscription, typically at partner discount rates passed through. The practice’s own cost is the separate stack on top, usually a practice management tool such as Karbon or AccountancyManager at £39 to £79/user/month, with Xero HQ, Xero Tax and Workpapers free under the Partner programme. Xero costs scale per client and pass through; Capium costs sit with the practice and stay flat within each band.

For a single business buying its own software, Xero starts at £15/month; Capium’s £140 base plan is built for multi-client practices.

Feature-by-feature

Bookkeeping and invoicing

How Capium handles it: Journal entry, sales and purchase invoicing, expense capture, multi-currency, bank reconciliation and credit control. Branded invoices, recurring invoices and credit notes supported. TrueLayer bank feeds refresh every 24 hours. CIS reverse charge supported.

How Xero handles it: Bookkeeping and bank reconciliation is what Xero is built around. Daily open banking feeds, suggested matches, bulk reconcile and bank rules clear hundreds of transactions in minutes. Invoicing supports pay-now buttons via Stripe and GoCardless, online quotes with digital signature, and per-customer late-payment reminders. Cash coding handles spreadsheet-style bulk clearance.

Verdict on this feature: Xero has the deeper, faster bookkeeping engine and a more polished interface; independent reviewers note Capium’s UI feels sluggish on the client side. Capium’s bookkeeping is functionally adequate but not built to compete on day-to-day transaction volume.

VAT and MTD

How Capium handles it: HMRC-recognised for MTD VAT. Returns generate from the records, are reviewed on screen and submitted with one click. Standard, flat rate and cash accounting schemes plus CIS reverse charge are all supported.

How Xero handles it: HMRC-recognised since the original 2019 MTD rollout. The nine-box return submits over the MTD API, auto-populated from the ledger, with a digital audit trail preserved end-to-end. Flat rate, standard, cash accounting and annual schemes all supported.

Verdict on this feature: Both are HMRC-recognised and submit cleanly. Xero has a longer track record and a slightly more polished review interface; Capium covers the same compliance ground.

Accounts production

How Capium handles it: Built-in module covers FRS 102, FRS 102 1A, FRS 105 micro-entity, plus partnerships, sole traders and (via Charity Accounts) SORP-compliant statements. Integrated iXBRL tagging with direct Companies House filing.

How Xero handles it: Xero itself does not produce statutory accounts. Accountants on the Partner programme use Xero Workpapers and Xero Tax to file iXBRL accounts to HMRC. Non-partners need a separate tool such as TaxCalc, IRIS or BTCSoftware.

Verdict on this feature: Capium has accounts production native to the suite; Xero requires the partner ecosystem or a third-party tool. For a partner practice, Xero’s stack covers the same ground for free; for a single business, Xero gives no accounts production.

Tax filing

How Capium handles it: Self Assessment module covers SA100 plus the main supplementary pages. Corporation Tax module produces CT600 returns and submits direct to HMRC. MTD for ITSA quarterly updates and end-of-period statement workflow are in place ahead of April 2026.

How Xero handles it: Xero Tax (free for accountants on the Partner programme) handles SA100, partnership tax and CT600 with iXBRL accounts. HMRC-recognised for MTD ITSA, with quarterly submissions produced from the same ledger as the VAT return.

Verdict on this feature: Capium bundles SA and CT into the standard module stack accessible to any subscriber; Xero’s tax filing tools sit behind partner status. Both handle MTD ITSA cleanly.

Practice management

How Capium handles it: Premium add-on module covering deadline calendar (pulled from each client record), task management, document storage, CapiSign e-signature, timesheets and a built-in CRM. No native two-way Outlook or Gmail sync.

How Xero handles it: Xero HQ is the free practice console for partners: client list, reconciliation and VAT alerts, role-based staff access. It is a console rather than a full practice management suite, so most practices pair it with Karbon, Senta (IRIS Elements) or AccountancyManager.

Verdict on this feature: Capium has practice management built in; Xero relies on a separate tool. If email triage is central to your workflow, Karbon paired with Xero beats Capium’s PM module. If the goal is one supplier, Capium wins.

Reporting

How Capium handles it: Standard reports across modules: VAT, payroll summaries, P&L, balance sheet, trial balance, deadline reports. Users have described depth in some modules as less polished than Sage or IRIS equivalents.

How Xero handles it: Reports cover P&L, balance sheet, cash summary, trial balance, aged receivables and payables, and budget variance, built on a tag-and-tracking system. Comprehensive and Ultimate add Analytics Plus with cash flow forecasting. Fathom and Spotlight add KPI dashboards.

Verdict on this feature: Xero’s reporting is the more polished engine, especially with marketplace add-ons. Capium’s is functional but not the strongest part of the suite.

Integrations

How Capium handles it: TrueLayer for bank feeds across major UK high-street and challenger banks (Starling, Monzo, Tide, Revolut). Direct submission to Companies House and HMRC. Trial balance import from Xero, QuickBooks, Sage and Excel. Third-party app ecosystem is limited.

How Xero handles it: 1,000+ app marketplace covering inventory, CRM, e-commerce, expense management, payments and reporting. Open banking feeds free.

Verdict on this feature: Xero has a structural advantage no UK competitor matches. Capium covers compliance integrations but not the wider business app universe.

Support

How Capium handles it: Free setup and onboarding plus six-days-a-week UK-based support included on every base plan.

How Xero handles it: Online-only via Xero Central; no UK phone line. Non-urgent response times can run to 24 hours. Help library, community forum and certified advisor network included.

Verdict on this feature: Capium offers more direct human support; Xero relies on self-service and the case system.

MTD and compliance comparison

Both platforms are HMRC-recognised across the MTD programme; the differences sit in scope and bundling.

For MTD for VAT, both submit the nine-box return directly to HMRC with a digital audit trail. Xero has been recognised since 2019; Capium is also on HMRC’s published list. Neither requires bridging.

For MTD for ITSA, both have functionality in place ahead of the 6 April 2026 mandation for qualifying gross income above £50,000 from self-employment or property, and both will handle the £30,000 (2027) and £20,000 (2028) thresholds. Xero handles ITSA from the same ledger as the VAT return, so dual-mandated users operate one set of digital records. Capium handles it inside the SA module, with figures pre-filled from the bookkeeping ledger when the client uses Capium for their own books.

For Corporation Tax, no MTD CT date has been set. Capium files CT600 from the CT module; Xero relies on Xero Tax (free for partners). For PAYE RTI, both are recognised. For Companies House filing, Capium is a recognised supplier with integrated iXBRL tagging; Xero produces accounts via Xero Tax under the Partner programme.

The key compliance difference is bundling: Capium covers the full chain under one subscription open to any user, while Xero covers the same chain under the practice partner stack with tax filing tools free only to Partner programme members.

Integration ecosystems

Xero’s 1,000+ app marketplace is the largest in UK cloud accounting, covering inventory (Unleashed, Cin7), CRM (HubSpot, Pipedrive), e-commerce (Shopify, A2X for Amazon), expense management (Dext), payments (Stripe, GoCardless) and reporting (Fathom, Spotlight). Capium’s ecosystem is much narrower: Companies House direct filing, HMRC submission for VAT, ITSA, CT600 and PAYE RTI, TrueLayer bank feeds, and trial balance and CSV imports from Xero, QuickBooks, Sage and Excel.

The two overlap on bank feeds, HMRC submissions and Companies House filing, and diverge everywhere else. A practice supporting clients with Shopify stores, complex inventory or HubSpot CRM will find Xero indispensable; a practice running compliance work for traditional service businesses will not miss most of Xero’s marketplace.

Pros and cons of each

Capium pros

• HMRC-recognised across MTD VAT, MTD ITSA, PAYE RTI and CT600 from one platform.
• Single integrated database; trial balance flows from bookkeeping into accounts production into CT600 without rekeying.
• Module-based pricing from £20/month per module on the small tier.
• Unlimited user licences on every base plan.
• Companies House recognised supplier with integrated iXBRL tagging.
• Practice management, payroll and CRM included in the suite proposition.
• UK-only product focus keeps legislation, tax codes and forms current.
• Free setup and six-days-a-week support included on every base plan.

Capium cons

• Interface reported as feeling sluggish on the client side compared with Xero.
• Cost climbs quickly with multiple modules; not economic for very small practices below 30 to 50 clients.
• Practice management lacks native Outlook or Gmail email integration of the depth Karbon offers.
• Third-party app ecosystem is narrow; specialist e-commerce, inventory and industry apps are limited.
• Bank feeds itemised at £1.50 + VAT per feed per month.
• Twelve-month minimum contract with 30 days notice.
• Training new staff takes longer because interface conventions are particular to Capium.

Xero pros

• HMRC-recognised for both MTD VAT (since 2019) and MTD ITSA, with one ledger handling both.
• Open banking feeds free for all UK banks across every plan.
• 1,000+ app marketplace, the deepest in UK accounting software.
• Multi-currency built in on Comprehensive and Ultimate, with automatic FX gain/loss postings.
• Unlimited users on every plan with role-based permissions.
• CIS handling fully integrated at £5/month, including CIS300 submission.
• Strong mobile app coverage on iOS and Android.
• Free Xero HQ, Xero Tax and Workpapers for accountants on the Partner programme.

Xero cons

• No payroll on the Ignite plan; a single-employee director must move up to Grow at £28/month.
• Per-employee payroll cheaper at very small headcounts but more expensive at scale than fixed-price competitors.
• Multi-currency locked behind the £47 Comprehensive plan.
• Project module is Ultimate-only at £55/month.
• Inventory functional but basic beyond a few hundred SKUs; serious stock businesses need a connected app.
• Customer support is online-only with no UK phone line.
• Statutory accounts production and tax filing tools are partner-only; non-partners need a separate tool.

Pick Capium if…

• You run a UK accounting practice in the 50 to 500 client range and want one supplier covering the whole compliance chain.
• You are consolidating from a stack of separate bookkeeping, accounts production, payroll and workflow tools.
• You want to do your own MTD for ITSA submissions in-house from April 2026 without adding another vendor.
• You value unlimited user licensing across the whole platform.
• You want the practice management module bundled rather than paying separately for Karbon, Senta or AccountancyManager.
• You prefer UK-based six-days-a-week support over self-service case systems.

Pick Xero if…

• You are a UK SME, limited company, freelancer or growing service business buying for your own business rather than a practice.
• Your accountant or bookkeeper already supports Xero (around 80% of UK practices have a Xero relationship).
• You need a deep app ecosystem (Shopify, Dext, HubSpot, Unleashed) connected to your ledger.
• You bill in multiple currencies and want clean FX postings on Comprehensive or Ultimate.
• You operate in construction with CIS obligations and want the £5 add-on.
• You run a UK accounting practice happy to combine the Xero ledger, Xero HQ, Xero Tax and a separate practice management tool.
• You need free open banking feeds without per-feed line items.

Pick neither if…

• Your practice is enterprise-scale (1,000+ clients across multiple offices). CCH iFirm or IRIS Practice Management are more proven at that scale.
• You want bundled payroll inside the core product without per-employee or per-module pricing. Sage Accounting includes payroll in its own bundles.
• You are a sole trader on a tight budget who only needs invoicing and basic bookkeeping. Pandle has a free tier, Wave is free for invoicing and bookkeeping, and Bokio offers a free tier with MTD VAT.
• You want a banking-first sole trader account with bookkeeping bolted on. Tide, Starling Business Toolkit, ANNA Money or Coconut bundle a current account with bookkeeping.
• You are a UK contractor working primarily inside IR35. FreeAgent is free if you bank with NatWest, RBS or Mettle, includes payroll, and has IR35-aware tools.
• You are a portfolio landlord wanting per-property reporting. Hammock is purpose-built for landlords.

Comparable software

The UK accounting software market splits along the same fault line as this comparison. On the bookkeeping side, QuickBooks Online is Xero’s closest feature-for-feature competitor, Sage Accounting is the cheaper UK incumbent, FreeAgent is the contractor specialist and KashFlow a long-standing UK option. On the practice management side, Karbon leads on email-centric workflow, Senta (IRIS Elements) suits IRIS-aligned practices, AccountancyManager covers UK compliance workflow and CCH iFirm sits at the enterprise end. The cards below show similar UK platforms drawn from shared categories.

FAQs

Is Capium better than Xero for a UK accounting practice?

It depends on practice size and how much of the compliance chain you want under one supplier. Capium suits firms in the 50 to 500 client range that want bookkeeping, accounts production, CT600, SA100, payroll and practice management consolidated under one platform. Xero gives a market-leading ledger plus the free partner stack (Xero HQ, Xero Tax, Workpapers), typically paired with a separate tool like Karbon for workflow. Capium is one supplier and one client database; Xero is a deeper bookkeeping engine plus a wider ecosystem.

Are Capium and Xero both HMRC-recognised for MTD?

Yes. Both are HMRC-recognised for MTD VAT and both have MTD ITSA functionality in place ahead of the 6 April 2026 mandate for individuals with qualifying income above £50,000 from self-employment or property. Neither requires bridging software for VAT.

Does Xero include accounts production and corporation tax filing?

Not in the core subscription. Statutory accounts production and CT600 filing are handled by Xero Tax and Xero Workpapers, free for accountants on the Xero Partner programme. A non-partner business cannot file CT600 from Xero alone and needs a separate tool such as TaxCalc, or an accountant who uses Xero Tax. Capium includes both as standard suite modules.

How does Capium pricing compare to Xero pricing?

The models differ. Capium charges the practice: a base plan from £140/month for up to 100 clients, plus £20/month per standard module on the small tier. Xero charges per business: £15 to £55/month plus per-employee payroll. For a single business, Xero is far cheaper because Capium is not designed for single-business use.

Can I migrate from Xero to Capium?

Yes. Capium accepts trial balance imports from Xero, QuickBooks, Sage and Excel into Accounts Production, plus CSV imports across most modules. The free onboarding team handles migration during setup.

Does Capium have an app marketplace like Xero’s?

No. Capium connects to TrueLayer, HMRC and Companies House and accepts trial balance and CSV imports, but has no marketplace comparable to Xero’s 1,000-app ecosystem.

Which has better customer support?

Capium offers free setup, free onboarding and six-days-a-week support on every base plan. Xero is online-only via Xero Central with no UK phone line; non-urgent response times can run to 24 hours.

Which handles MTD for ITSA better in April 2026?

Both meet the legal requirement. Xero’s advantage is that the same ledger runs both VAT and ITSA submissions, so dual-mandated users operate one set of digital records. Capium’s advantage is that the SA module pre-fills figures from the bookkeeping ledger when the client uses Capium for their own books.

How long are the contracts?

Capium runs on a 12-month minimum with 30 days notice. Xero is monthly with no minimum on standard plans. Free trials available on both.

Final summary

Capium and Xero answer different questions. Capium is a UK-only practice suite that lets a small or mid-sized firm replace a stack of bookkeeping, accounts production, payroll and workflow tools with one supplier under one client database. The trade-offs are a slower interface, a much narrower app ecosystem and a 12-month contract; the upside is one supplier and a workflow that runs cleanly from bookkeeping to filed CT600. For a UK practice in the 50 to 500 client range that values consolidation, Capium is one of the few credible single-supplier options worth shortlisting. Visit Capium for a free suite trial.

Xero is the strongest cloud bookkeeping platform in the UK market and the safest software decision for a typical SME, limited company, freelancer or growing service business. The 1,000-app ecosystem, free open banking feeds, full MTD coverage and the partner programme that gives accountants free Xero HQ, Xero Tax and Workpapers make it the default choice for most UK businesses and the practices that support them. Visit Xero for a 30-day trial.