The Post Office has cut rates on its Premier Cash Isa to 1.5% including a bonus for the first 18 months. Despite the cut, it is still the top rate on offer on easy-access deals.
Other top rates include Barclays Bank Instant Cash Isa issue 1 at 1.49% on a minimum £30,000, and Tesco Bank at 1.45%, minimum £1.
All three accept transfers from other providers.
On fixed-rate cash Isas the Post Office's top 1.7% for a year has also disappeared, along with the table-topping 2% from AA Savings.
The best one-year deal is now Tesco Bank at 1.65%, while for two years it's 1.95% from the Post Office.
On taxable easy-access accounts top rates include ICICI Bank Super Savings, AA Internet Savings and Post Office Online Saver issue 13, all at 1.4% before tax (1.12% after tax).
Both the AA and the Post Office accounts include a bonus payable for the first year, after which the rate drops substantially.
On fixed-rate bonds the best one-year deal comes from internet bank First Save at 1.85% (1.48%), while for two years State Bank of India pays 2.25% (1.8%).
This article was written for our sister website Money Observer