Charter Savings Bank has increased rates on its one-year, fixed-rate cash Isa by 0.05% to 1.21% AER.
The product changes also apply to the two- and three-year fixed rate Isas.
Paul Whitlock, director of savings at Charter Savings Bank, said: “This rate change is another improvement to our range of straightforward savings products that offer competitive rates and are supported by great service.
“Savers need to act quickly to lock in best-buy returns as our fixed rate cash Isas are proving very popular.”
Charter Savings Bank is part of the wider Charter Court Financial Services (CCFS) brand, which recently started work on its new offices in Wolverhampton.
CCFS was also recently named in the London Stock Exchange Group’s 1,000 Companies to Inspire Britain 2017 report.