When might a UK employee utilizing salary sacrifice still be required to complete a Self Assessment tax return?

Answer

If they have significant income from sources other than standard employment, such as rental properties.

If an employee must file a return for other reasons, such as having income from self-employment or rental properties, they must then ensure the reduced salary figure from their P60 is accurately reflected in that required return.

When might a UK employee utilizing salary sacrifice still be required to complete a Self Assessment tax return?
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