If you changed employer during a tax year, the daily commuting distance and therefore the amount of the commuter allowance usually change as well.

If you changed employer during the year, you can easily enter multiple primary workplaces:

"Primary workplace old employer"

• Distance 30 km, 80 working days, 5-day week

"Primary workplace new employer"

• Distance 15 km, 150 working days, 5-day week