NerdNumbers

Xero

Our Pick

Accounting Software

Cloud-native accounting with the strongest integration ecosystem in the UK.

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Overview

Xero has become the default choice for forward-thinking UK accounting firms, and for good reason. Its cloud-native architecture means every feature was built for the web from day one — no awkward desktop-to-cloud migrations, no feature gaps between versions.

The real strength is the ecosystem. Xero's app marketplace has over 1,000 integrations, far more than any competitor in the UK market. Bank feeds are reliable and fast, the API is excellent for custom integrations, and the multi-currency support is genuinely good.

For accounting firms specifically, Xero HQ gives you a single dashboard to manage all your clients, and the practice tools (proposals, client records, staff management) keep improving with each release.

Best for

Most UK firms, especially those wanting best-in-class integrations

Key Features

Real-time bank feeds with automatic reconciliation
Over 1,000 app integrations via the marketplace
Multi-currency support with live exchange rates
Xero HQ for managing multiple client organisations
MTD for VAT and Income Tax compliant
Unlimited users on all plans
Project tracking and time recording
Built-in invoicing with online payment options

Pros & Cons

What We Like

  • Largest integration ecosystem of any UK accounting platform
  • Genuinely cloud-native — fast, reliable, works on any device
  • Excellent API for custom integrations and automation
  • Unlimited users means no per-seat cost scaling
  • Strong community and accountant partner programme

Watch Out For

  • Inventory management is basic compared to dedicated solutions
  • Reporting could be more powerful without third-party add-ons
  • Price increases have been frequent in recent years
  • Customer support can be slow for non-partner users

Pricing

Plans start from £15/month (Starter) to £47/month (Premium). Partner pricing available for accounting firms. All plans include unlimited users.

Key Integrations

DextKarbonStripeGoCardlessHubDocSpotlight ReportingIgnitionZapier

Our Verdict

Xero is our default recommendation for UK accounting firms. The combination of a mature cloud platform, the largest integration ecosystem, and strong practice management tools makes it the most complete package. Unless you have a specific reason to choose something else, start here.

Try Xero

Other Accounting Software Tools

QuickBooks Online

A solid all-rounder with strong automation and built-in payroll.

Sage Accounting

A well-known UK brand with solid compliance features and improving cloud capabilities.

FreeAgent

Best Value

Simple, clean accounting built for sole practitioners and micro-firms.

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Xero Review for Accounting Firms | NerdNumbers