MTD4L is a full-stack solution for UK landlords to manage rental properties, record income and expenses, and submit tax updates directly to HMRC under the Making Tax Digital (MTD) initiative.

• Frontend: Angular SPA for property management, transaction recording, and HMRC submissions.
• Backend: ASP.NET Core Web API with SQL Server, supporting authentication, property, transaction, obligation, and submission management.
• HMRC Integration: OAuth2 authentication and submission endpoints for quarterly updates, EOPS, and final declarations (sandbox/test NINO).
• Testing: Unit tests (Karma/Jasmine) and e2e test scaffolding.
• Development: Local HTTPS proxy for SPA/backend integration.

• Landlords can register, log in, and manage their rental portfolio.
• Users can record income/expense transactions and categorize them.
• Obligations are synced from HMRC and tracked in-app.
• Quarterly, EOPS, and final submissions can be sent to HMRC via secure API.
• All data is stored securely and can be managed via the dashboard.

This project is under active development. For build/run instructions, see below.

1. Clone the Repository

   git clone https://github.com/your-org/mtd4l.git

2. Open Solution

   • Launch Visual Studio 2019.
   • Open the MTD4L.sln solution file.

3. Restore Dependencies

   • Visual Studio will automatically restore NuGet packages on solution load.
   • For the Angular frontend, open a terminal in /ClientApp and run:

     npm install

4. Configure Environment

   • Update your SQL Server connection string and HMRC sandbox credentials using user secrets or environment variables.
     Do not modify sensitive settings directly in appsettings.*.json files!.

5. Run the Application

   • Set the Web API project as the startup project.
   • Press F5 to build and run both backend and frontend (the SPA will proxy through the backend).