Gallai Brexit heb gytundeb arwain at:•economi lai – 8% i 10% yn llai dros yr hirdymor dan reolau Sefydliad Masnach y Byd. Byddai hynny'n gyfwerth â rhwng £1,500 a £2,000 y pen.•llai o swyddi - Bydd economi gwannach a mwy o rwystrau ar gyfer busnesau yn peryglu swyddi, buddsoddiadau a bywoliaeth pobl yng Nghymru.•trethi allforio newydd ar fusnesau Cymru – Tariffau sylweddol ar allforion cig oen a chig eidion o Gymru. Gallai hynny gynnwys tariffau (trethi mewnforio) gymaint ag 84% ar garcasau gwartheg, 46% ar gig oen a 61% ar ddarnau o gig oen.•rhwystrau rheoleiddiol newydd ar gyfer busnesau yng Nghymru - Gallai unrhyw rwystrau newydd i farchnad yr UE fod yn hynod niweidiol i lawer o fusnesau Cymru, yn enwedig i'r rheini yn y sector bwyd yn ogystal â'r sectorau awyrofod a cherbydau modurol sydd oll yn bwysig i economi Cymru. Byddai hynny'n cael effaith uniongyrchol a hirdymor ar safonau byw ac yn gwthio mwy o bobl i dlodi yng Nghymru.•biwrocratiaeth ac oedi – Gallai newidiadau i'r rheolau tollau sy'n ychwanegu at gostau, amser, anghyfleustra a rheoliadau gael effaith ddinistriol ar economi Cymru.•oedi mewn porthladdoedd – Efallai y bydd oedi ym mhorthladdoedd Cymru a'r DU wrth i rwystrau a gwiriadau newydd gael eu cyflwyno.
A catastrophic no deal Brexit could lead to:a smaller economy – 8% to 10% smaller over the long run under World Trade Organisation rules. This would be equivalent to between £1,500 and £2,000 per head.damage to Welsh jobs – a weaker economy and increased barriers for business will endanger jobs, investment, and livelihoods in Wales.new export taxes on Welsh business – significant tariffs on Welsh lamb and beef exports. These could include tariffs (import taxes) as high as 84% on cattle carcasses, 46% on lamb and 61% on cuts of lamb.new regulatory barriers for Welsh businesses – any new barriers to the EU market could be hugely damaging for many Welsh businesses, especially those in the food sector, but as well as aerospace, and the automotive sectors – all vital to the Welsh economy. This would have an immediate and long-term impact on living standards and push more people into poverty in Wales.red tape and delays – changes to customs rules which add to costs, time, inconvenience and regulation could have a damaging impact on the economy of Wales.delays at ports – could see delays at Welsh and UK ports as new barriers and checks put in place.