Choosing the cheapest KiwiSaver fund will not guarantee you get the most in your pocket, research suggests.
Analysis of the after fees and tax returns from KiwiSaver funds over the 10 years to March 31 found there was no instance where the cheapest 15 per cent of funds appeared in the list of the top 15 per cent of highest returning funds.
There were only three instances indicating an overlap between the 15 per cent cheapest and the 15 per cent highest performing funds when the research was conducted over any five-year period in any of the categories.
Binu Paul, a co-founder of Pocketwise - an independent financial product comparison website which carried out the research, said it showed fees were important but should not be the sole factor used to pick a fund.
"Fees are charged regardless of whether a fund has added value or not and so it is a very important factor to consider.