Replacing VBA legacy systems: future-proof instead of grown.
Grown Excel macros and Access databases often carry production planning, quoting or shipping. We replace such VBA legacy systems in stages, extend them or rebuild them as maintainable software while operations keep running.
Analysis
Inventory of your VBA tools, priority list, effort estimate.
Further development
Secure and extend existing macros when that pays off.
Redevelopment
Proven business logic rebuilt in Python, .NET or a web app.
Why VBA legacy systems are a risk today.
Microsoft no longer actively develops VBA, VBScript is deprecated, and web and mobile Office do not run macros.
Dependence on "that one colleague"
Someone who has since left wrote the macro years ago. If the file fails, the process stops.
Code without versioning or logging
VBA lives in binary Office files without Git history, logging or permissions. Changes are hard to trace.
Security and compliance
Macro files are a known malware entry point. Shadow IT the IT department never sees becomes an audit problem.
System gaps and duplicate data entry
SAP or ERP data is copied by hand into Excel, through the macro and back. Every handover produces errors.
Does this sound like your Excel tool?
Then secure the business logic while "that one colleague" can still explain it.
From analysis to redevelopment.
We assess every system individually and recommend only what pays off.
Assessment & analysis
We map your VBA tools, rate each by risk and effort, and deliver a prioritized effort estimate.
Further development of existing VBA systems
If your system runs stably, we clean up the code, remove outdated ActiveX elements and add SQL Server access. For bug fixes and smaller changes see VBA programming.
Migration to modern systems
We move the proven logic in stages into a web, desktop or cloud application with central data storage while the legacy system keeps running.
Redevelopment in modern languages
When a conversion no longer pays off, we rebuild the solution with documented architecture and planned data migration.
Typical systems we replace.
We meet these tools most often in manufacturing:
- Production planningPlanning tools for capacities and dates that must become multi-user capable.
- Quoting and calculation toolsExcel calculations kept consistent and audit-proof for several users.
- Shipping and logistics toolsMacros for dispatch, labels, tracking and carrier interfaces.
- SAP-adjacent island solutionsExcel tools next to SAP whose data handover we automate.
- Controlling & reportingReporting macros, moved into automated data pipelines and dashboards.
- Access databases & form solutionsAccess applications with VBA form logic, migrated to SQL Server and a modern UI.
Target technologies that fit your environment.
No tool translates VBA at the push of a button. We choose by requirements and environment.
- Pythonpandas, openpyxl, xlwings for data processing and reporting.
- .NET / C#Desktop and enterprise applications on Windows.
- Web applicationsTypeScript and Node.js, central and multi-user capable.
- SQL Server / relational databasesCentral, analyzable data storage with permissions.
- Power Platform / Power AutomateWhere low-code and M365 integration suffice.
- Interfaces & APIsConnections to SAP, ERP and CRM.
How the replacement runs.
Initial call & short assessment
We clarify the project, processes and bottlenecks.
Analysis & evaluation
Code quality, scope, dependencies and the recommendation: modernize or replace.
Migration plan
Prioritized stages, effort estimate and defined goals.
Implementation with parallel operation
Incremental replacement with data migration and continuous verification.
Stabilization, maintenance & operations
Technical care and further development after the switch.
Frequently asked questions about VBA replacement.
Do I have to replace my VBA system completely?
No. If it runs stably and covers your needs, extending the existing code is often more economical. The initial analysis shows where a replacement pays off.
Is Microsoft shutting down VBA?
VBA remains supported, yet no longer actively developed. VBScript is deprecated, and web and mobile Office do not run VBA.
Can we keep working during the transition?
Yes. We migrate step by step with parallel operation. The legacy system keeps running until the new functions are stable.
Which language do you migrate to?
Usually Python, .NET/C#, a web application with a SQL Server backend or the Microsoft Power Platform, depending on environment and maintainability.
Do you also support Access VBA and SAP-adjacent Excel tools?
Yes. Excel macros, Access form logic, database hybrids and tools running alongside SAP or an ERP: we know them and connect them via interfaces.
How do you estimate cost and duration?
A free short assessment covers code quality, scope and risks and yields an effort estimate with a priority list before you commit.
The best time: while the system still runs.
The earlier the analysis, the calmer and cheaper the modernization.
Request a free initial analysis.
Briefly describe your project. We assess the most sensible path and get back to you with an evaluation.
We usually reply within 24 hours.
Remote and on site in Germany, Austria and Switzerland. International projects on request.