Here are the key dates to note this month:
5 April 2017: Deadline for claiming your PAYE tax refund for the 2012/13 tax year.
5 April 2017: Deadline for claiming tax overpaid for the 2012/13 tax year under self assessment
6 April 2017: First day of the new tax year 2017/18
6 April 2017: Time to gather detailed documentation for your 2016/17 tax return