Year-End Tax Guide 2017/18 Ways you could reduce your UK tax liability for 2017/18. … This content is only available to our registered users. Please log in or create a free account, to gain access to our extensive business, personal and tax guides. Login (Forgotten login?) Create new account Personal tax planning Personal allowances and reliefs, capital taxes, pension contributions and ISA allowances. Business tax planning Corporation tax, deductions, reliefs and VAT that may affect your business and its planning. Upcoming changes Tax rates and allowances and car and van benefits for 2018/19.