What makes the work necessary
Manual spreadsheets often contain important business logic but weak controls, unclear ownership and limited scalability. Modernisation begins by understanding that logic before changing the tool.
Signals that the current approach needs attention
Key calculations depend on one spreadsheet or analyst
Data preparation and reconciliation are repeated manually
Errors are difficult to trace after a reporting cycle
Legacy VBA cannot scale or be tested easily
Capabilities the engagement is designed to create
- Repeatable calculation pipeline with clear inputs and outputs
- Automated data quality and reconciliation controls
- Logging, version control and documented handover
- Reduced dependence on manual recalculation
Tangible outputs for analysis and handover
Structured from framing to transfer
Each stage leaves an output that can be reviewed before the next stage begins.
Methods selected around the analytical purpose
The tool follows the control environment
Evidence needed to support the scope
- Representative source extracts and known-good outputs
- Current workbooks, code, procedures and control evidence
- Agreed ownership and execution environment
Controls that preserve accountability
- Original and modernised outputs are reconciled
- Run logs and exceptions do not expose sensitive data
- Change control and handover responsibilities are defined
Source-verified implementation examples
Automating PEL case calculations
Interest and premium entitlement calculations varied by contract case, subscription date and rate tier, making consistent manual treatment difficult.
Outcome: qualitative capability
From spreadsheet calculator to reproducible risk pipeline
Probability of Default and Loss Given Default logic needed to move beyond a single spreadsheet-based workflow into a more scalable and reproducible implementation.
Outcome: qualitative capability
Before scoping the work
Must a VBA tool be replaced completely?
Not always. A risk-based assessment can identify which logic should remain, which controls need strengthening and which components benefit from migration.
Can the pipeline run in an existing environment?
Usually, subject to available runtime, security and scheduling constraints. The target environment is agreed before implementation.