ISA contributions 'more regular'
Investors have changed to regular contributions to their individual savings accounts, instead of making lump sum contributions.
The regular payments are less risky and could have given better returns in recent volatile markets.
Research for the Tax Incentivised Savings Association (Tisa) found that most 2009/10 and 2008/9 stock market ISAs were opened between April and June, not in the traditional rush period at the end of the tax year.
But Isa subscriptions by value were more event spread in the tax years concerned and many investors continue subscriptions into the next year, often monthly, the Tisa study revealed.
The study noted a "shift from a 'buy now while stocks last' approach to ISAs to them becoming a regular savings/investment vehicle."
"The seasonality of ISAs has changed over the years. At one time, the main sign-up period was the days leading up to the end of the tax year," it said.
Copyright © Press Association 2011