Use of home as office expense calculator

Easily calculate allowable expenses for using a home as an office. Ensure accurate and compliant expense reporting for your clients.

🏠 Core Functionality

  • ACCA and HMRC compliant calculations
  • Accurately apportions home office expenses
  • Multi-tab interface: Calculator, How It Works, Examples

 

💰 Expense Input

  • Input fields for annual household expenses (Council Tax, Electricity, Gas, Insurance, Water)
  • "Add Additional Expense" button for dynamic entries
  • Pre-filled examples and £ currency formatting
  • Selection for apportionment type (Fixed vs. Variable costs)

 

🚪 Room Details

  • Add and remove unlimited rooms with sequential numbering
  • Fields for Room Name, Area (sq ft), and Business Hours/Week
  • Dedicated Business Use dropdown (100% Business vs. Mixed Use)
  • HMRC compliance warning for genuine business use

 

🧮 Calculation Features

  • "Calculate Expenses" and "Reset All" buttons
  • Space-based apportionment using room area
  • Time-based apportionment for mixed-use rooms
  • Automatic allocation of expenses proportionally

 

⚖️ HMRC Compliance

  • Professional disclaimer regarding calculator limitations
  • Recommendations for professional accounting advice
  • Official references and clickable links to ACCA guidance, HMRC manual, and ITTOIA 2005
  • Record-keeping reminders

 

📱 User Interface

  • Clean tabbed design: Calculator, How It Works, Examples
  • Emoji icons and color-coded sections for clarity
  • Responsive forms with helpful tooltips

 

🎓 Educational Features

  • "How It Works" tab explains methodology
  • "Examples" tab for practical scenarios
  • Inline guidance and HMRC compliance tips

 

📋 Professional Standards

  • Methodology based on ACCA professional standards
  • HMRC-compliant calculations
  • Encourages evidence-based approach and reasonable claims