PSAL & GESALL: Software Solutions to Transform HR and Accounting Functions

Author: Proximus NXT

04/09/2025

ICT solutions

With APSAL and GESALL.net, Proximus NXT helps Luxembourg-based organizations manage payroll and accounting operations efficiently. Designed for the national context, these tools are continuously evolving to meet the expectations of economic and social stakeholders.

In Luxembourg, Proximus NXT is a key player in the Telecom & ICT sector, offering robust connectivity solutions, a wide range of IT services, easy access to cloud platforms, and strong cybersecurity expertise. In addition to these activities, the company has developed software solutions to meet the needs of organizations in payroll processing with APSAL, and accounting management for Luxembourgish entities with GESALL.

Streamlined Payroll Management

"Currently, our APSAL solution is used to process payroll within organizations or by accounting firms, enabling smooth management of all payroll-related operations. Through APSAL, organizations can efficiently provide employees with payslips and submit mandatory declarations to the Joint Social Security Center or the tax administration," explains Delphine Darcourt, Sales Manager APSAL-GESALL at Proximus Luxembourg.

"Today, APSAL is an intuitive and user-friendly solution that supports and optimizes the administrative work of payroll managers. It has evolved over time to integrate all payroll calculation parameters. With our development team located in Bertrange, we can quickly adapt to legal changes and meet clients’ specific requests."

260,000 Payslips Generated Every Month with APSAL

This solution is widely used in Luxembourg, by private companies handling their own payroll, by fiduciaries offering payroll services, and by public administrations or non-profit organizations.

"Every month, around 260,000 payslips are generated via APSAL in Luxembourg. This represents more than half of the national workforce," adds Delphine Darcourt. "It serves both small organizations with five employees and larger clients generating up to 25,000 payslips monthly."

Modern, Flexible, and Intuitive Interface

APSAL is modular and configurable according to each company’s needs, fully integrating Luxembourg’s legal framework.

"Our teams are currently developing a new version of the solution to be launched in 2026. Accessible via web browser, it will be easier to deploy and use for all organizations," says Marion Bettembourg, Sales Delegate at Proximus NXT. "The goal is to provide a modern, user-friendly interface. For companies that prefer, the solution can still be deployed in their own environment. Our team also remains attentive to each client’s specific needs."

A Comprehensive, Modular Accounting Solution

GESALL is a robust accounting tool that also integrates Luxembourg-specific regulatory requirements.

"GESALL covers the full accounting cycle, from journal entries to financial statements, with advanced features such as multi-entity management, automatic reconciliation, and financial analysis. It simplifies and centralizes financial management for multi-entity organizations, providing an intuitive, high-performing, and locally compliant tool," explains Delphine Darcourt.

GESALL is modular and customizable, offering features like Boomerang for automated client follow-ups, and GESALL Bill for invoicing. It meets the needs of fiduciaries, foundations, healthcare institutions, and SMEs with complex accounting requirements.

Tailored to Professionals and Fiduciaries

GESALL caters to fiduciaries managing multiple client portfolios, SMEs internalizing accounting, and public institutions or associations requiring structured, transparent accounting.

The team is currently developing three new modules to better serve Luxembourg’s diverse organizations:

GESALL EASY: Designed for self-employed professionals and freelancers.
GESALL AUDIT: Helps fiduciaries with VAT reporting, result statements, and error detection.
GESALL Dashboard: Provides managers with dynamic visualizations of key performance indicators for informed decision-making.

Adapting to Individual Needs

"This solution evolves with our clients, whether private companies, NGOs, foundations, or municipal administrations. It meets specific requirements, from budget implementation to standardized chart of accounts," explains Marion Bettembourg. "With GESALL, clients save up to 30% of administrative time. Automation frees them to focus on their core business."

Supporting Digital Transformation

In a rapidly changing environment where compliance, agility, and efficiency are critical, HR and accounting functions play a key role. APSAL and GESALL offer proven, robust, and scalable solutions that support organizational performance and transformation.

Far from being mere technical tools, they act as partners, turning technology into a lever for business evolution.

APSAL : https://www.proximusnxt.lu/fr/apsal
GESALL : https://www.proximusnxt.lu/fr/gesallnet