Yorkshire Building Society has launched a fixed-rate cash Isa at a tax-free 2% fixed until 31 July 2015.
It is the best short-term fixed deal and also available from its brands, Chelsea and Barnsley building societies.
The top one year rate comes from Britannia, part of the Co-op Bank, at 1.85%.
On easy-access cash Isas, Britannia pays 1.75%, Kent Reliance 1.7% and National Counties Building Society and Metro Bank both 1.65%.
On taxable accounts, the top easy access rate at 1.5% before tax (1.2% after) comes from AA Internet Saver following cuts to new savers from both Kent Reliance and Tesco Bank last week.
Britannia Select Saver 4 also pays 1.5% (1.2%) but limits you to four withdrawals a year. Kent Reliance now pays 1.45% (1.16%) to new savers opening its easy-access account.
On fixed rate deals Post Office pays 1.8% (1.44%) for 12 months and National Counties Building Society 1.76% (1.41%). BM Savings, part of Halifax, Kent Reliance, Principality Building Society. Aldermore Bank and Investec all pay 1.75% (1.4%) for one year.
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Yorkshire Building Society and its subsidiaries pay 2% (1.6%) for 18 months while for two years you can earn 2.25% (1.8%) with Post Office or 2.21% (1.76%) with National Counties Building Society.
This article was written for our sister website Money Observer