Capital standards reportedly being considered for investment funds with over $100 billion could cost the average retirement saver $100,000, according to a conservative think tank.

“If the enhanced prudential supervision regime looks something akin to what is being discussed today, the impact on investors will be significant—especially for young investors with long investment time horizons,” the American Action Forum said in a report issued today by its president Douglas Holtz-Eakin, who served on Congress’s Financial Crisis Inquiry Commission.

The forum based its conclusion on the assumption the Financial Stability Oversight Council's capital standards proposal would impose an 8 percent of capital set-aside for the funds, with the losses to investors based on what investors would have earned if the money had been invested on their behalf for the last 10 years.

Holtz-Eakin said the losses could be greater than the $100,000 if the funds are assessed fees to help pay for the costs of failed financial institutions.

The report said 14 investment funds that meet the non-bank SIFI size threshold are the Vanguard Total Stock Market Index Fund, the PIMCO Total Return Fund, Vanguard Institutional Index Fund, Vanguard 500 Index Fund, SPDR S&P EFT Trust, Vanguard Prime Money Market Fund, CREF Stock Account, EuroPacific Growth Fund, Vanguard Total International Stock Index, Fidelity Cash Reserves, JP Morgan Prime Money Market Fund, Fidelity Contra Fund and the Vanguard Total Market Fund Index.

The FSOC was set up by the Dodd Frank Act to look at systemic threats faced by the nation’s financial system.

The council of regulators was also charged with looking at the potential for non-bank financial institutions, which had never been regulated federally, to harm the economy following the collapse of AIG, whose failed investments in risky mortgages endangered a number of banks and led to a $100 billion federal bailout.

Holtz-Eakin and others have argued investment companies should be exempt from capital surcharges because they, unlike banks, do not invest their own money and use leverage to increase the magnitude and risk of the assets.

FSOC will be holding a seminar on the issue Monday that will include CFA Institute President and Chief Executive Officer John Rogers.