Where should I invest €70k for three years?

Do you know if this is available for under 18 year olds and do you need to have an existing/other account with PTSB. Website is very poor! Thank you.
You need to open a profile account would imagine over 18 call to branch maybe
 
I think you might not be comparing like with like.

This 3-year credit union offer seems to be 1.66% per year (or 5% in total after three years).

AIB offer around 3% per year for a 2 year term. PTSB offer 3% per year for a 3 year term. Banks on Raisin offer more than 4% per year for terms of 1 to 3 years. So, I think you can do a lot better than this credit union's offer.

See the best buys thread.
 
Ok so TSB seems best - the credit union has max of 50 k