I'm Croatian, I worked for 8 years in Croatia, and 2 full years in the UK.
I'm now planning to move back to Croatia, and I'm trying to figure out the best thing to do with my UK National Insurance record.
In the tax year I started working in the UK (2016/17), I didn't meet the threshold for it to be counted as a full NI year. The online tax account is saying I can make up the shortfall for about £400. Does anyone know how this shortfall is calculated, exactly, in this situation: some earnings, some NI contributions, but not enough? It's not (52 x Class 3 contributions for 2016/17), it's not (52 x Class 3 contributions for 2016/17) - (NI already paid), it's not (52 - (earnings / Primary Threshold for 2016/17) ) x (Class 3 contributions for 2016/17)... Not that important, but I'm curious.
More importantly: considering a year of state pension is about £250 per year, a one time cost of £400 seems like an amazing deal.
This then led me to looking into voluntary NI contributions going forwards. My understanding is that, working in the EU, I could apply to pay Class 2 voluntary NI at £3 per week, so another £156 would get me £250 per year. That really seems to good to be true, so I suspect I'm misunderstanding something.
I expect that this is a fairly common situation if generalised as: worked in the UK, moving to work in the EU. But I've found it really difficult to find a reliable source that clearly explains how it would work out, or real world experiences except
this gentleman, for whom it seems to have worked out very well.
If anyone has a good source or a good understanding of this, I would be very grateful for your help.