It's rare when someone rises above the fray to do the right thing.

Last week, Goldman Sachs (NYSE: GS) said it might drop out of the Institute of International Finance (IIF), the leading international banking lobby, over a dispute about accounting standards. On the surface, it seems like a boring technical squabble, but it is anything but.

Why leave such a swell group?
Since January, the Financial Accounting Standards Board (FASB) has dictated that companies value their illiquid assets at fair market value instead of historic value.

Fair market value for derivatives holdings linked to subprime mortgages is what the market would currently pay for these securities, and historic value is where these securities have traded in the past. In this credit crisis, fair market value for such securities is lower than historic value would be. The new accounting rule, Statement of Financial Accounting Standards (SFAS) 157, has had a dramatic impact on large banks.

Forcing banks to value their illiquid securities at the lower market value has led to billions in additional write-offs. Just look at the latest quarterly numbers from Citigroup (NYSE: C), UBS (NYSE: UBS), Merrill Lynch (NYSE: MER), or Wachovia (NYSE: WB). To try to raise capital to replace these losses and shore up reserves, many banks have had to cut dividends, pull back on loan activity, and issue additional shares that dilute existing holdings.

Couldn't banks use a break?
The IIF, most likely fed up with astronomical losses and the painful consequences, has proposed changing the rules and allowing banks to use historical and not market prices to value illiquid assets. Goldman then threatened to quit the group, calling the proposed changes "Alice-in-Wonderland Accounting." Morgan Stanley (NYSE: MS) also objected to the proposal.

A case can be made for using historic value. Market value may force banks to take unrealistically large write-offs. Given today's credit crisis and the ensuing lack of appetite for mortgage derivatives, current market values might be overly depressed. These losses are unrealized and only become realized if and when the securities are actually sold. Perhaps the market value of these derivatives will improve when the credit crisis wanes. Banks may never actually realize these losses that are killing them in the near term and might be inviting future regulatory scrutiny. So, what's wrong with giving banks a break?

Don't let them get away with it
In this Fool's opinion, market value provides a more honest assessment of a bank's present situation. Maybe the securities in question will gain value in the future, but that's speculation. Also, market value gives banks a uniform standard by which they can be compared. By sidestepping the true current value of illiquid securities, banks are using a slick maneuver to get themselves off the hook. Didn't slick maneuvers get banks into this mess in the first place? Have they learned nothing?

Although the IIF proposed these changes as optional, Goldman threatened to leave the group. Perhaps Goldman doesn't want to be part of a group that would maneuver itself out of trouble. Goldman has forged a reputation as an investment bank that is a notch better and a breed apart from the others. If it doesn't distinguish itself from the losers by doing things better, it'll be just another loser.

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