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Scope 3

How to Track Business Travel Emissions

Step-by-Step Process

  1. 1

    Collect travel booking data or expense claims

  2. 2

    Categorise by mode: air, rail, taxi, hotel

  3. 3

    Apply appropriate emission factors

  4. 4

    Include radiative forcing for flights

  5. 5

    Sum and convert to tonnes CO2e

Key Formulas

Flight km × Aviation Factor × RF = kg CO2eRail km × Rail Factor = kg CO2e

Common Mistakes to Avoid

  • Forgetting radiative forcing multiplier for flights
  • Missing taxi/expenses not on travel system
  • Not including accommodation
  • Mixing one-way and return distances

Tools & Resources

  • Travel management system
  • Expense platform
  • DEFRA transport factors
  • Airline calculators

Automate Your Calculations

ComplyCarbon handles all these calculations automatically with built-in UK Government conversion factors.

Get Automatic Calculations →