Complete platform
for accounting firms
13 modules from KSeF to HR & payroll.
No more paper invoices and spreadsheets
Accounting firms lose an average of 8 hours per month manually collecting confirmations per client. BiLLU eliminates this problem.
Before BiLLU
- Sending invoices by email and waiting for a response
- Manually tracking each invoice status in a spreadsheet
- No central place for verification and comments
- Manual creation of JPK and PDF reports
- No automatic deadline notifications
- Separate process for KSeF e-invoices
With BiLLU
- Import invoices from Excel, CSV or directly from KSeF
- Client verifies invoices online with one click
- Complete history of comments and decisions
- PDF, Excel, JPK_FA(3) reports generated automatically
- Automatic email reminders before deadlines
- One system for all invoice types
Who is BiLLU for?
One system, two panels — perfectly tailored for the firm and client.
Central invoice dashboard
All purchase invoices in one panel — with filtering, sorting and statuses.
Multi-source import
Excel, CSV, KSeF — import invoices with one click.
Automatic reports
PDF, Excel, JPK_FA(3) ready instantly, no manual work.
Status control
Know which invoices the client accepted, rejected or left without response.
Email notifications
System sends reminders automatically — no need to call.
Contractor verification
Check NIP in GUS, CEIDG, VIES and VAT White List.
4 steps to automation
From invoice import to a ready JPK report — in minutes.
Import invoices
The firm imports invoices from Excel/CSV or downloads them directly from KSeF.
Online verification
The client logs in by NIP and reviews invoices. Accepts, rejects or comments.
Assign cost centers
The client assigns cost centers to approved invoices.
Report & export
System generates PDF, Excel and JPK_FA(3) reports — ready for bookkeeping.
Everything an accounting firm needs
13 integrated modules in one platform.
Sales & purchase invoices
Full invoice management with filters, pagination, statuses and detail view.
Monthly batches
Group invoices into batches per client and month. Track approval progress.
KSeF Integration
Import e-invoices from the National e-Invoice System. API token, PFX certificate.
Reports & exports
PDF, Excel, JPK_FA(3), CSV, XML — automatically generated.
Contractor verification
NIP in GUS, CEIDG, VIES, VAT White List — with one click.
HR & Payroll
Payroll, gross-to-net calculator, leave tracking, PPK.
Full KSeF API v2 integration
BiLLU connects directly with the Ministry of Finance's National e-Invoice System. Download e-invoices automatically — without manually logging into the KSeF portal.
Three auth methods
API token, qualified certificate (PFX/P12) or KSeF-issued certificate.
Automatic invoice import
Periodic e-invoice downloads from KSeF on a schedule.
Certificate encryption
KSeF tokens and certificates encrypted with AES-256-GCM. Per-installation key.
JPK_FA(3) XML export
Automatic generation of JPK file compliant with MF schema.
Connection diagnostics
Test KSeF configuration from the panel. Real-time certificate verification.
Per-client configuration
Each client has their own KSeF token or certificate. Full data isolation.
Your data is safe
Enterprise-grade security built into every element of the system.
AES-256 Encryption
All sensitive data encrypted at rest and in transit (TLS 1.3).
GDPR Compliant
Data stored exclusively in Poland/EU. No transfer outside the EEA.
Audit trail
Every action logged — who, when, what changed. Full accountability.
Data isolation
Each accounting firm has a separate context. No cross-client access.
Ready to automate your invoice workflow?
Join accounting firms already using BiLLU. Request a demo or log in to the platform now.
Request a demo or ask a question
Write to us — we'll respond within 24 hours on business days.