January 2020

31          Online personal tax self assessment returns for 2018/19 to avoid late filing penalty and extension of the enquiry window

31          Filing deadline for amended personal tax self assessment returns for 2017/18

31          Payment date for personal self-assessment balancing payment and any capital gains tax (CGT) for 2018/19 and first payment on account for 2019/20

31          Brexit date - UK to leave European Union at 11pm