2013 – 2014 Class 3 NIC 15 May 2013 Gemma Latest News, Rates and Allowances No comment Class 3: Voluntary contributions The weekly contribution will rise by 30p to £13.55 a week. The higher rate will also, in most cases, apply to contributions for 2010/11 and earlier years paid after 5 April 2013. Related posts: Corporation Tax Rates 2012/2013 2013 – 2014 STUDENTS LOANS 2013 – 2014 Class 4 NIC 2013 – 2014 Class 2 NIC Class 3 NIC Contributions 2012/2013