Existing Dresdener investment trust PEP investors will also benefit from this low charge. The fee remains constant, no matter how many PEP tax years are combined.
Simon White, Dresdener's head of investment, says: "Investors who have taken out a PEP since launch could well have pounds 100,000 invested in funds.
"Taken with a pounds 7,000 investment from 6 April into an ISA, an investor could be paying a PEP/ISA administration charge of 0.03 per cent on their entire tax-sheltered investment."
Total expenses for some of Dresdener's funds, including annual management charges and other expenses within the trust, would come to 0.46 per cent - less than most tracker funds, according to Mr White.