Companies which have forgotten to deduct part of their VAT can repair this omission without having to submit a tax claim. It is enough to include the amounts on the next VAT return. However, you must act quickly because omissions concerning 2015 declarations can only be rectified until 31 December 2017.
The same is true for cancelled or unpaid 2015 transactions. All refunds have to be requested before 31 December 2017.
Contact our indirect tax team for further assistance.