The deadline for making your second payment on account for income tax is 31st July.
This deadline is relevant to individuals who need to complete a self assessment tax return and make direct payments to HMRC in respect of their income tax, class 4 NI, capital gains tax and high income child benefit charge liabilities.
If you have registered for self assesment on line with HMRC you will be able to view your payments on account and details of how to make your payment.
There are numerous ways to make a payment:
HMRC charge 3.0% interest on any late payments.