Tool

Depreciation calculator

Calculate a fixed-asset depreciation plan - linear or digressive method, accounting for value changes over time.

Case study

A complete application, not just a form

The calculator interface communicates with an independent API. Calculations are performed by a custom domain engine running as a FastAPI service.

Solution architecture

  • A Lit and TypeScript component handles input, form state and schedule presentation.
  • The FastAPI REST API accepts the fixed-asset model and returns monthly schedule entries.
  • The Python engine handles straight-line and declining-balance depreciation, factors, value changes and rounding adjustments.
  • The backend runs in a container and is deployed automatically through Jenkins.

From ERP experience to an independent project

The depreciation calculator draws on domain knowledge I gained while working with Probit 's ERP system, including my work on its fixed-assets module. The algorithm, backend and user interface were developed independently for this personal project and use no Probit code or data.

Technologies

Python 3.11 FastAPI REST API TypeScript Lit pytest Docker Jenkins