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UK financial operating system

Run the business. The books run themselves.

Sell. Take payments. Manage stock. Reconcile the bank. Keep the books. File the taxes. Understand the business. One system. RegNexus connects everyday business activity directly to the financial ledger—so accounting becomes an automatic consequence of running the business.

Built-in POS & stock Double-entry ledger Open BankingPayroll & tax engines HMRC MTD VAT
RegNexus Books · Mission Control
Illustrative view

Good morning, Fred.

Your books are reconciled to yesterday.

Books healthy
Cash£80,211▲ £4,820 this month
Receivables£28,4006 invoices due
Next VAT estimate£6,98038 days to deadline
Ask RegNexusGrounded in your books
Can I pay a £25,000 supplier bill and still cover payroll and VAT?
Cash decision
Yes — with £31,420 projected headroom.

Based on current cash, expected receipts, payroll obligations and the VAT estimate. Review assumptions before committing the payment.

✓ Decision receipt availablesnapshot · 12 Aug
What needs attention

2 overdue invoices · 1 unreconciled bank item · payroll approval due Friday

Continuous checks

No high-severity findings · approval controls active · ledger integrity verified

SellingPaymentsStockAccountingBankingPayrollTaxAuditIntelligence
One system. Four jobs.

Stop stitching together software just to understand your own business.

Traditional accounting software starts after business activity has happened. RegNexus starts with the activity itself—so the operating loop and the financial record are the same system.

SellGet paidManage stockKeep the booksFileUnderstandDecide
£

Run the money

Keep daily financial operations moving without turning every task into an accounting exercise.

  • Invoices, bills and payments
  • Bank feeds and reconciliation
  • Expenses, mileage and credit notes
  • Recurring invoices and collections

Know where you stand

Move from static reports to answers, explanations and forward-looking decisions.

  • P&L, balance sheet and cash flow
  • Ask questions in plain English
  • Click figures to see their source
  • Forecasts, scenarios and valuation

Stay on top of obligations

Bring the recurring compliance work into the same system that holds the underlying numbers.

  • VAT, payroll and tax workflows
  • PAYE, NI, pensions and CIS
  • Dynamic deadline calendar
  • Pre-filing readiness checks

Control what can go wrong

Use controls normally associated with larger finance teams—without building a larger finance team.

  • Continuous audit checks
  • Four-eyes approvals
  • Anomaly and forensic analysis
  • Cryptographic ledger integrity
From barcode to bank reconciliation

Make the sale. RegNexus does the accounting.

Scan the product. Take the payment. Hand the customer their receipt. Behind the scenes, RegNexus updates stock, records revenue, calculates cost of goods sold, updates VAT, posts the ledger and prepares the transaction for bank reconciliation. You never need to understand double-entry accounting for any of it to happen.

ScanHardware scanner or phone camera
SellFull-screen POS checkout
PayCash or connected payment provider
StockInventory reduced automatically
AccountDouble-entry posted automatically
ReconcileSettlement matched to the bank
UnderstandMargins, cash and performance updated
Card payments run through connected payment providers using the merchant's own account — SumUp is available today; additional providers are planned. Payment-processing fees are charged by your payment provider, not by RegNexus.
The commercial difference

Your accounting software should reduce dependence on experts—not create more of it.

RegNexus is built so a capable business owner or finance team can get to the answer, action and evidence faster.

Traditional accounting workflow

×
Find the right reportNavigate menus, date ranges and accounting terminology.
×
Interpret it yourselfThe system gives you numbers; the meaning is still your problem.
×
Build the correctionUsers are expected to know the accounting entry before the software can help.
×
Reconstruct the evidence laterQuestions from accountants, auditors or regulators become a separate project.
VS

RegNexus workflow

Ask the questionGet a direct ledger-grounded answer when the question is factual.
Understand the driversSee source journals, policies, trends and supporting context.
Preview the actionExecutable actions are separated from questions and gated before posting.
Keep the evidenceDecision receipts, audit history and integrity controls travel with the books.
Financial intelligence

Your till knows what you sold. RegNexus understands what it means.

Operational software records what happened. Accounting software records the financial consequence. RegNexus connects both—then helps you decide what to do next. Factual questions are answered from the ledger, never generated. Actions are previewed and confirmed. Analysis can use AI—validated against your ledger before it reaches you.

01 · Ask

“What is our cash position?”

State queries route directly to the ledger and return a deterministic result.

QUERY_STATE
→ ledger resolver
→ £80,211.83
→ no generative AI required
02 · Time-travel

“What was cash last Tuesday?”

Temporal queries resolve against historical ledger state—queryable, not reconstructable.

QUERY_TEMPORAL
→ point-in-time ledger state
→ deterministic answer
→ exportable evidence
03 · Act

“Fix petty cash.”

RegNexus generates the proposed correction; nothing posts until you confirm it.

ACTION
→ propose correction
→ preview journals
→ user confirms
→ post
04 · Explain

“Explain my cash position.”

Complex analysis can use AI with pre-flight and post-flight validation against financial facts.

AI_ANALYSIS
→ validated snapshot
→ analysis
→ figure cross-check
→ guarded response
42/42Adversarial financial-behaviour tests passed
0False-positive actions
0AI-generated ledger figures
100%Actions confirmation-gated
Built around your operating model

Not every business needs the same version of accounting.

Choose the lens that matches how you actually work.

See the business without becoming an accountant.

For founders who need control of cash, invoices, tax and decisions without spending the day inside financial reports.

  • Ask plain-English questions about your numbers
  • See cash, debtors, bills and deadlines in one place
  • Automate recurring bookkeeping work with review gates
  • Run scenarios before making important decisions
Founder view

What needs your attention today

Cash runway7.4 months

Based on current operating outflows.

Invoices at risk£8,260

Customers with slower payment patterns.

Upcoming obligations3

Payroll, VAT estimate and supplier payment.

Bookkeeping health96%

2 items need categorisation.

Priority actionChase invoices 1028 and 1031 before Friday to protect next month's cash headroom.

Financial control designed for businesses that must prove control.

For payment firms, fintechs and regulated businesses where approval discipline, auditability and supervisory evidence matter.

  • Mandatory journal rationale in Regulator-Ready Mode
  • Four-eyes approval above materiality thresholds
  • Continuous audit findings and resolution tracking
  • Decision receipts, assurance scoring and regulator reports
Regulator-ready view

Control environment

Pending approvals4

2 journals exceed materiality threshold.

High findings0

Daily continuous audit completed.

Ledger integrityVerified

Latest Merkle root retained.

Evidence coverage92%

Decision receipts attached to key actions.

AssuranceControl evidence is generated by the same system that records the transaction—not reconstructed after the event.

From till to ledger without losing the accounting truth.

For retail and hospitality businesses that need point-of-sale operations and back-office finance to behave like one system.

  • POS checkout, refunds, discounts, tips and cash-up
  • Stock, products, suppliers, gift cards and loyalty
  • Connected card payments through your own provider account — SumUp available today
  • Every operating action posts the correct double-entry journals
Retail workspace

Today's store position

Net sales£3,842

82 completed orders.

Gross margin54.8%

Updated from live stock cost.

Stock alerts7

Items below reorder level.

Card settlementMatched

SumUp settlement reconciled.

Business CoachSaturday sales are up, but discounting is eroding margin in two product categories.

Manage more clients without multiplying review work.

For accountants and bookkeepers who need cross-client visibility, consistent controls and cleaner handoff.

  • Multi-client practice dashboard
  • Accountant handoff bundles with eight report sections
  • Review requests, annotations and collaboration
  • Marketplace profile and client connections
Practice view

Client portfolio

Clients healthy18 / 22

Four need intervention.

Filing readiness86%

Portfolio weighted average.

Open reviews9

Across six client entities.

Unreconciled items31

Prioritised by materiality.

Portfolio actionThree clients have VAT deadlines within 14 days and unresolved reconciliation gaps.
Evidence, not black boxes

Every important number should be explainable. Every important action should be provable.

This is where RegNexus becomes materially different from a feature-rich bookkeeping package.

Decision Receipt

Turn a financial answer into a verifiable record.

Decision receipts preserve the question, answer, underlying snapshot and content hash so key decisions can be traced later.

Figure Interpretability

Click the number. See where it came from.

Drill into source journals, accounting policies and relevant estimates instead of accepting a report total at face value.

Time Capsule

See the books as they stood at a point in time.

Compare Then versus Now across revenue, profit, cash, assets, liabilities, receivables and payables, with exportable evidence.

Continuous Audit

Check the control environment every day.

Automated materiality, segregation and journal-pattern checks surface findings while they are still manageable.

UK tax & filing infrastructure

Built for UK finance workflows—with approval status shown honestly.

The product contains VAT, payroll, corporation tax, self-assessment, CIS and Companies House workflows. Where a government production approval is still in progress, we say so plainly.

What is already in the product

Core engines and workflows can support accounting and compliance preparation now; specific live e-filing connections remain subject to external production approval where indicated.

VAT enginePayroll & RTI workflow CT computation CIS iXBRL workflow
HMRC fraud prevention headersPassed 12 Aug 2026
MTD VAT production credentialsGranted 16 Aug 2026
CT600 live e-filingRequires HMRC recognition — not yet live
Companies House live filingRequires CH approval — not yet live
We deliberately separate what is built in the application from what is externally approved for live submission — and update this as each approval is granted.
One subscription instead of a software stack

Most businesses run five systems. RegNexus is one.

The comparison isn't RegNexus versus another accounting subscription. It's RegNexus versus the stack of software a trading business normally pays for and stitches together.

The traditional stack

×
POS / till systemSales live in one place, accounts in another.
×
Stock systemInventory counted separately from COGS.
×
Accounting softwareRe-keys or imports what already happened.
×
Reporting & analysis toolsSpreadsheets to work out what it all means.
VS

RegNexus

Business operationsPOS, stock, purchasing, payments—built in.
AccountingEvery operating action posts the correct journals.
ComplianceVAT, payroll, tax and filing in the same system.
Financial intelligenceMargins, cash, forecasts and decisions—explained.
Payment-processing fees remain separately charged by your chosen payment provider. RegNexus subscriptions do not include card-processing fees.
Straightforward pricing

Priced for the business you run.

Every plan starts with a 30-day free trial. No credit card required. Prices exclude VAT.

Founding Business ProgrammeRun your entire business on RegNexus for £49/month.First 100 qualifying businesses get full RegNexus Business — normally £79/month — with the founding price protected for 24 months.
Become a founding business →

RegNexus Books

Service businesses, contractors and SMEs that don't need a till
£49/month + VAT
or £490/year + VAT — 2 months free
  • Double-entry accounting
  • Invoices, bills and expenses
  • Bank feeds and reconciliation
  • VAT and core HMRC filing
  • Financial statements and reporting
  • Deterministic financial queries
  • Business Coach and cash-flow intelligence
  • Continuous audit and decision memory
Start free

RegNexus Intelligence

Growing businesses that want deeper decision support
£129/month + VAT
or £1,290/year + VAT — 2 months free
  • Everything in RegNexus Business
  • Advanced Business Coach
  • Scenario analysis and what-ifs
  • Cash-flow forecasting
  • Anomaly detection
  • Management intelligence and valuation
  • Advanced decision memory
  • Multi-location — coming soon
Start free
FCA-regulated business?RegNexus was originally engineered with controls capable of supporting regulated financial businesses: Regulator-Ready Mode, four-eyes approval, tamper-evident ledger, compliance calendar, examination and audit support, assurance controls and accountant handoff.From £349/month
Talk to RegNexus
RegNexus for AccountantsBring your clients. Let RegNexus make their books easier to manage — multi-client dashboard, reviews, collaboration and accountant handoff.
Talk to RegNexus →

Run the business. Let the books run themselves.

From the first sale to the tax return, RegNexus connects the actions that run your business with the financial system that records, controls and explains them.

Built on execution-safe financial control: deterministic numbers, confirmation-gated actions and AI that explains your finances without controlling your ledger.