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15 MIN DELAYED market data · source + timestamp on hoverFTSE 100 8,214▲GBP/USD 1.2731▼EUR/GBP 0.8442UK Bank Rate 4.75%SONIA 4.70%GBP/EUR 1.1846REGNEXUS BOOKS — Know what happened. Know what happens next.GENESIS — Build. Authorise. Operate. Grow.SAFEGUARD — Safeguarding governance and controlLUMEN — Run learning at scaleREGNEXUS MAIL — Business communication infrastructure15 MIN DELAYED market data · source + timestamp on hoverFTSE 100 8,214▲GBP/USD 1.2731▼EUR/GBP 0.8442UK Bank Rate 4.75%SONIA 4.70%GBP/EUR 1.1846REGNEXUS BOOKS — Know what happened. Know what happens next.GENESIS — Build. Authorise. Operate. Grow.SAFEGUARD — Safeguarding governance and controlLUMEN — Run learning at scaleREGNEXUS MAIL — Business communication infrastructure
RegNexus Books vs Xero

Connected accounting is powerful. Controlled financial truth goes further.

Xero has built one of the world's best-known small-business accounting ecosystems — bookkeeping, bank feeds, invoicing, payments, expenses, projects, tax and 1,000+ connected apps. RegNexus Books takes a different architectural approach: what if the financial system itself became the control layer?

Start with RegNexus BooksRequest a demo
Live certification · checking… Ledger integrity · live Deterministic core · active AI-generated financial figures · 0
Same task. Different system.

Xero built an accounting ecosystem. RegNexus is building a financial-control system.

Xero · typical workflow

Open the cash or bank reporting area. Choose the period. Review accounts. Interpret the number.

RegNexus Books
£80,211.83 — current cash position across active accounts.
SOURCE: LEDGER · GENERATIVE AI USED FOR FIGURE: NO
At a glance

RegNexus Books vs Xero

Xero
RegNexus Books
UK cloud accounting
Strong
UK cloud accounting
Strong
Bank reconciliation
Strong
Bank reconciliation
Yes
App ecosystem
1,000+ apps promoted
App ecosystem
Smaller, controlled integration set
AI
JAX AI finance partner
AI
AI explanation separated from deterministic truth
Tracking / dimensions
Tracking categories
Tracking / dimensions
Custom financial dimensions
Financial-state questions
AI / reporting
Financial-state questions
Deterministic ledger queries
Action intent controls
Standard workflow controls
Action intent controls
Intent classifier + execution gates
Multi-entity
Broader ecosystem approaches
Multi-entity
Native group structures, eliminations, FX
Counterfactual modelling
Analytics/forecasting apps
Counterfactual modelling
Horizon
Verifiable evidence
Conventional audit/reporting
Verifiable evidence
Frontier
Why businesses move

Signs you may have outgrown Xero.

Your team still interprets too much manually.

You want fewer app dependencies for core truth.

You need safer action gating.

You want continuous control, not just connected accounting.

You need live proof, certification and stronger provenance.

The difference

Xero records the business. RegNexus controls the financial system around it.

Books

Record and control financial truth.

Horizon

Model what could happen next.

Frontier

Create evidence of what is true.

Nexus

Connect authority, agreements, obligations and outcomes.

An honest view

Choose the right tool for where you are.

When Xero may be the better fit

  • You value a huge app ecosystem and broad third-party connectivity.
  • Familiar bookkeeping workflows and accountant adoption matter most.
  • Your core controls are comfortably met by connected apps.

When RegNexus Books becomes the better choice

  • The question changes from 'How do I record this?' to 'Should this be allowed?'
  • You need to know what changed, and who authorised it.
  • You want to know what was true before a change happened.
  • You want to model a decision before it becomes a transaction.
  • You need to prove a figure without handing over the whole ledger.
Switching

Moving should not mean losing financial history.

01
Understand

We map your existing books, accounts, balances and operating structure.

02
Validate

Opening positions and imported information are checked before they become the RegNexus baseline.

03
Configure

Entities, roles, dimensions, banking and controls are set around how you actually work.

04
Operate

Your historical accounting becomes the starting point for a controlled financial system.

FAQ

Questions, answered honestly.

Can Books replace my Xero app stack?

Books focuses on core financial truth and control natively, with a smaller, governed integration set — so the most important controls don't depend on many independent products.

How is Books' AI different from JAX?

Both use AI. Books maintains a strict boundary: AI helps explain financial truth; the truth itself is calculated deterministically.

You need a system that knows which numbers are true.

Books £49/mo · Books Pro £149/mo · Enterprise from £349/mo + VAT

Start with RegNexus BooksRequest a demoAll comparisons →

Comparison information is based on publicly available product information reviewed in September 2026. Product features, pricing and availability may change. RegNexus Limited is not affiliated with the companies compared on this page. All third-party trademarks belong to their respective owners. Comparison last reviewed 2026-09-11.