Investors should consider taking a long-term view of Isas, according to financial advice from a comparison website.

According to Andrew Hagger, spokesperson for Moneynet, money put into an Isa this year is exempt from tax next year as well.

He added that although interest rates are low at the moment, rates are likely to pick up and then the benefits of an Isa will as well.

"If rates were to rise back to three and four per cent then you are looking at a much better differential between the two," Mr Hagger said.

"So while I can understand why Isas are not good value for people at the moment, you perhaps have to take a long-term view of it," he added.

The best value easy access Isa is from Santander and offers a rate of 2.53 per cent, according to Moneyfacts.co.uk.

The lowest easy access Isa, meanwhile, has a rate of 0.25 per cent. This is being offered by Nationwide.