Second Payment on Account
Where you are required to make Payments on Account this is the total for the
second payment. Under Self Assessment some people make two 'Payments on
Account' of tax in advance of the final payment date. Where you have to make
'Payments on Account' each payment will normally equal one half of the
previous year's tax liability (after taking off tax deducted at source and tax
credits on dividends). The payments are due on 31 January in the tax year, and
31 July following the tax year.