A financial services company needed a dynamic loan interest calculator that could account for several inputs and capitalization frequencies. The source describes calculations over periods of up to eight years, with inputs including fees, capital, and bank charges.
The Operational Challenge
We developed an Excel-based calculator using formulas and macros. Users could select monthly, quarterly, or annual interest capitalization, with calculations adjusting to the chosen inputs. The tool also generated detailed loan interest statements, with an option to export reports as PDFs.
Implementation & Workflow
The implementation focused on making the calculation process responsive to the variables users needed to test. For financial models, preserving the relationship between inputs and outputs is essential: the result should change consistently when a fee, capital amount, charge, or capitalization period changes.
The source project title also mentions conversion to a web app, but the detailed description focuses on the Excel calculator and does not explain the delivered web implementation. This case study therefore describes only the documented calculator functionality. Confirm the web conversion before making it the focus of the public page.
Key Takeaways & Evaluation
Before publishing a financial calculator case study, confirm the intended model version and tested calculation rules. Do not claim financial or regulatory validation unless documented.
If a spreadsheet calculator has become difficult to share, govern, or extend, document its formulas and test cases before choosing between a better-managed workbook and a web application.
## 8. Internal linking plan
Link each case study to one relevant service page and, where useful, one or two related case studies. Do not add links to URLs that have not been checked on the live site.
| Cluster | Service page destination | Related case studies | |---|---|---| | E-signature and document workflows | Custom e-signature development; document automation | Event waivers, benefits enrollment, healthcare forms, DocuSign API | | Excel-to-web conversion | Excel-to-web application conversion | Financial valuation, forecasting model, ROI calculator, trading dashboard | | Power Platform automation | Power Automate and Power Apps services | Microsoft Forms to PDF, equipment rental, visitor management | | Google Workspace automation | Google Workspace automation | Governance case study, mortgage prequalification | | CRM integration | Salesforce consulting; CRM integration | Salesforce/HubSpot sync, Pipedrive migration, Sales Navigator | | Custom financial applications | Custom web applications | Mortgage processing, fact-find questionnaire, appraisal order management | | Data processing and APIs | API integration and data processing | Excel-to-PostgreSQL, trading dashboard, Intuit reporting |
Use descriptive anchor text such as “Excel-to-web application conversion,” “custom e-signature workflows,” or “Salesforce and HubSpot integration.” Avoid repeating the same exact keyword anchor on every page. Link only when it genuinely helps the reader.
