Stop Interpreting Your Accounts.
Start Getting Financial Truth.
The first accounting system that prevents financial errors at the intent level — before anything touches the ledger.
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Why Traditional Accounting Software Fails Under Pressure
Xero, QuickBooks, and FreeAgent share four structural failures.
They do not answer questions — they display data
Ask Xero your cash position and it opens a report. You still have to find the number, interpret the context, and decide what it means. The software shows. It does not answer.
They do not validate intent — they execute blindly
Type a journal entry and it posts. No confirmation of what you meant. No check that the correction makes sense. The system assumes you are an expert. Most users are not.
They do not protect users — they assume expertise
Say "should I fix petty cash?" and nothing happens. The system cannot distinguish a question from an instruction. Advisory queries and execution commands look identical.
They do not understand time — they rely on manual reconstruction
Ask "what was cash before the fix?" and you get silence. Traditional systems have no temporal query capability. Historical state is gone the moment a transaction posts.
Result: The user becomes the control layer. Every financial answer, every correction, every safety check depends on human attention. RegNexus eliminates that dependency.
What Is Execution-Safe Accounting?
A new category of financial software where the system — not the user — is the control layer.
Questions produce answers, not reports
Ask a financial question in plain English. Get a precise answer with the exact figure, not a link to a report you have to interpret yourself.
Corrections are system-generated, not user-constructed
Say "fix petty cash" and the system generates the correcting journal entry for your approval. You confirm. You do not construct.
The system understands what you mean
Intent classification separates data queries, action requests, and advisory questions. "Should I fix this?" never triggers execution.
History is queryable, not reconstructable
Ask what any balance was at any point in time. The system returns the answer from its temporal ledger. No manual reconstruction required.
Traditional accounting software does none of this. The user does all of it.
Same Question. Different Outcome.
Five real scenarios. See what traditional software does — and what RegNexus does instead.
Opens Cash Flow report. User navigates to summary page. Scans for closing balance.
User finds number manually after 3-4 clicks
Current cash position across all accounts as of today.
Finance teams answer the same question 50+ times per month. Each answer takes 2-3 minutes. RegNexus: instant.
What Errors Does This System Prevent?
Traditional systems allow these failures. RegNexus prevents them.
Posts immediately without validation
System generates correction for approval
Cannot distinguish question from command
Intent classified as advisory — no execution
AI outputs unverified numbers
AI never touches ledger data — deterministic only
System executes regardless of confidence
Confirmation gate activated on action intents
No temporal capability
Point-in-time queries from immutable ledger
Shows report without interpretation
AI narrative with context, drivers, and trend
This is not automation. This is enforcement.
We Tried to Break It. It Didn't Break.
42 adversarial scenarios designed to force misclassification, execution leakage, and data contamination.
Intent Injection
Phrasing action commands as questions to bypass advisory classification. “I think you should fix petty cash” — does the system execute?
Execution Escalation
Compound commands designed to slip execution past the confirmation gate. “Show me cash and also post this journal.”
AI Contamination
Prompts designed to make AI-generated narrative produce figures that could be mistaken for ledger data.
Temporal Fabrication
Queries requesting historical states that never existed, to test whether the system fabricates or refuses.
Ambiguous Phrasing
Statements that could be questions or instructions. The safe default is always advisory — never execution.
42/42 survived. 0 failures. Every classification in < 0.012ms.
How It Works
Four steps. No menus. No report navigation. Just answers.
Ask
Type your question or instruction in plain English. No menus, no navigation, no report selection.
Classify
The system determines whether you want data, an action, or advice. Each routes differently.
Route
Data queries hit the ledger directly. Actions require confirmation. Advisory questions go to AI — isolated from your numbers.
Respond
You get an exact answer, a correction preview, or contextual advice. Every response in under 1 millisecond.
Every response in under 1 millisecond. No loading spinners. No page transitions.
Built For
SME Founders
You run the business but not the books. You need answers without accountancy training. RegNexus gives you financial clarity without expert dependency.
Accountants Managing Multiple Clients
You manage 10-50 client ledgers. You need a system that prevents errors at scale, not one that multiplies them. Practice-grade control across every entity.
Regulated Businesses
FCA-regulated firms, payment institutions, e-money issuers. You need audit-safe financial control that satisfies regulators without manual reconstruction.
Complete UK compliance. Direct to HMRC.
No third-party middleware. No manual re-keying. File directly.
MTD VAT
BUILTBoxes 1-9, quarterly submission
RTI Payroll
BUILTFPS/EPS, all NI categories
CT600
BUILTCorporation tax computation
SA100
BUILTSelf-assessment filing
iXBRL
BUILTCompanies House annual accounts
CIS
BUILTConstruction Industry Scheme
Part of the RegNexus ecosystem
One platform. Every tool a regulated institution needs.
Built by FYM Compliance. Trusted by regulated institutions.
Professional-grade financial control
Not entry-level bookkeeping. Regulator-grade financial infrastructure.
Starter
Single-entity regulated firms
- Double-entry ledger
- MTD VAT filing
- Bank feeds via Open Banking
- Basic reporting
- Continuous audit
Professional
Growing fintechs & multi-entity
- All Starter features
- Full payroll RTI
- CT600 / SA100 filing
- Inspector AI validation
- Guard Dog anomaly detection
- Financial narratives
Regulated
FCA-regulated, payment institutions
- All Professional features
- Regulator-ready mode
- Four-eyes approval
- Compliance calendar
- Assurance score
- Accountant handoff
Practice
Accountancy practices
- Multi-client portal
- Bulk operations
- White-label reports
- Marketplace listing
- API access
30 days free trial.
Accounting Software Helps You Work With Numbers.
RegNexus Gives You Financial Truth.
“Xero, QuickBooks, and FreeAgent require the user to be the control layer. RegNexus is the control layer.”
No credit card required. Cancel anytime.