The taxman is expected to dig deeper into the pockets of mutual fund investors in the coming years, according to new data from Lipper of New York, a development that's sure spur interest in tax-deferred savings vehicles.

About half of the $8.3 trillion money management industry is comprised of taxable funds, while the remainder is held in sheltered accounts like 401(k)s and other retirement products, a Reuters report on the findings observed.

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