A cash ISA with 4.57% interest is the 'market leader'. The tax year ends on April 6, 2026. This year's tax-free ISA savings allowance will end then. People can put up to £20,000 into ISAs each year. The HMRC tax year ends tomorrow, Sunday, April 6, 2026, and with it this year's tax-free ISA savings allowance.

Each year, people can put up to £20,000 into ISAs. If they don't use it, they lose it. Next year, people under 65 can only put £12,000 into cash ISAs. The overall ISA limit will still be £20,000, but the rest must go into a stocks and shares ISA.

Caitlyn Eastell recommended the Plum Cash ISA. It pays 4.57% interest. People can invest as little as £1. Caitlyn Eastell is a personal finance analyst. She works at Moneyfactscompare.co.uk. She recommended the Plum Cash ISA as her top pick. She also gave a warning.

ISAs offer tax-free savings.

The Plum Cash ISA pays 4.57% interest. It is the market leader. Caitlyn said this. The account pays 4.57% AER. Savers can invest as little as £1. The rate is for new money only.

The Plum Cash ISA has a bonus rate. It is 2.03% AER. It lasts for 12 months. Then it ends. Savers should review the deal after that. The account is good for people who need their money often. They can withdraw it without a penalty.

People who transfer money into this account get a lower rate. It is 4.07% AER. The deal is a 'Best Buy'. It gets an 'Excellent' rating from Moneyfacts.

Caitlyn talked about other financial products. One is the MBNA Fixed Saver One Year.

The MBNA Fixed Saver One Year has a new rate. It is 4.52% interest. The rate is attractive. It is good compared to other fixed-rate bonds.

This account is good for people who want guaranteed returns. They must deposit at least £1,000. They can add more money for 14 days. The account earns an 'Excellent' Moneyfacts product rating.

Savers must lock their money away. They can't get it back early. They must plan carefully. The deal earns an 'Excellent' Moneyfacts product rating.

Mortgage rates have gone up since the Iran war started.

Caitlyn looked at the mortgage market. She found one residential mortgage and one buy-to-let deal.

Hinckley & Rugby Building Society has a new mortgage deal. It is a two-year discounted variable rate mortgage. The deal is for remortgage customers. It is priced at 4.34% interest.

This mortgage deal is tempting. The initial rate is lower than fixed-rate deals. But it can change quickly. Borrowers get a £250 cashback incentive. The product fee is £800.

The mortgage deal has a maximum borrowing limit. It is £500,000. The deal earns an 'Outstanding' Moneyfacts product rating.

Caitlyn also talked about a buy-to-let mortgage. It is the NatWest two-year fixed rate mortgage.

The NatWest two-year fixed rate mortgage has a new rate. It is 5.21% interest. The rate lasts until June 30, 2028. There are no fees. The deal includes a free valuation incentive.

The deal is only available online. Some people might not like that. The product remains at the top of its sector. It earns an 'Outstanding' Moneyfacts product rating.