O 1 Ionawr 2021, bydd y DU wedi ymadael â Marchnad Sengl yr UE sy'n golygu na fydd gan fusnesau yng Nghymru fynediad mwyach i'r fasnach heb wrthdaro mewn nwyddau neu wasanaethau gydag aelod-wladwriaethau'r UE. Mae'r Gweinidog wedi pwysleisio bod camau y mae'n rhaid i fusnesau eu cymryd yn awr a bod angen iddynt wneud hyn os bydd y DU yn llwyddo i sicrhau cytundeb masnach â’r UE ai peidio.
From 1 January 2021, the UK will have left the EU Single Market meaning businesses in Wales will no longer have access to the frictionless trade in goods or services with EU member states. The minister has been clear that there are steps businesses must take now and that this is irrespective of whether the UK achieves a trade agreement with the EU.