Product
QW Payroll & ERP
AI-powered payroll for the UK
QW Payroll & ERP is CodexSigma’s flagship enterprise product: a complete, multi-tenant payroll and ERP platform built for the United Kingdom. It replaces the fragile spreadsheet-and-shared-drive payroll workflow with a single governed system that computes pay, files statutory returns, and runs your finance operations on your own infrastructure.
Every payslip is calculated from a physics-based analytics engine that models tax bands, National Insurance, pensions, and statutory payments — so payroll becomes a deterministic, auditable process rather than a monthly fire drill. The platform is designed from the ground up for HMRC Real Time Information (RTI) filing, automatically submitting Full Payment Submissions on schedule.
Because the entire system is self-hosted, your payroll data never leaves your server. No third-party SaaS vendor holds your employee records, your salary data, or your bank details. Multi-tenant isolation means accountancies and payroll bureaus can run hundreds of clients on one deployment, each fully sealed from the others.
Key features
- HMRC RTI automatic Full Payment Submission filing
- Physics-based payroll engine covering tax, NI, pensions, and statutory pay
- Multi-tenant architecture for payroll bureaus and accountancies
- Full ERP modules: ledger, invoicing, expenses, and reporting
- Self-hosted deployment with your data on your own servers
- API-first design for integrations with your existing stack
- Audit trail and tamper-proof payroll records
- Role-based access control and SSO-ready auth
Why it matters
- Payroll that used to take days now runs in minutes
- Never miss an RTI deadline — filings are automated
- Your data stays yours: no vendor lock-in, no cloud hostage-taking
- One platform for payroll, finance, and reporting
- Bureau-ready: run many clients in isolated tenancies