Odysseas Papadimitriou is founder and chief executive officer of Evolution Finance, the parent company of Wallet Blog and Card Hub, an online marketplace for credit-card applications.

WASHINGTON ( TheStreet) -- The Credit Card Accountability Responsibility and Disclosure (CARD) Act that came into effect earlier this year was meant to protect consumers from egregious practices by the credit card companies. By and large, the new rules do a good job in accomplishing this goal. However, there was one revision in the final draft of the bill involving payment allocation that does not have the consumer's best interest at heart.

The new payment allocation rules state that any payment above the minimum must be applied to the balance with the highest annual percentage rate first. While this is an improvement from the previous payment allocation rules, it still offers no benefit to people who can only afford to pay the minimum payment each month - that's 29% of Americans, according to a FINRA National Survey.

That means that almost one in three people are still having their payments applied to their lowest APR balance first - allowing credit card companies to delay them from paying down their most expensive debt. For people paying above the minimum, there is only marginal benefit depending on how much more than the minimum they pay each month. The way the law is currently written guarantees that a certain percentage of everyone's credit card payments will be allocated unfairly.

What's worse is that originally there was a pro-consumer version of the bill that stated that the entire payment should be applied to the balance with the highest APR. On February 11, 2009, Senator Dodd introduced a bill to the Senate (S.414) that proposed a payment allocation system in which:

"The card issuer shall apply the payment first to the card balance bearing the highest rate of interest, and then to each successive balance bearing the next highest rate of interest, until the payment is exhausted."

Unfortunately, this section was amended during negotiations in the committee process. The bill signed into law states "the card issuer shall apply amounts in excess of the minimum payment amount first to the card balance bearing the highest rate of interest."

It's interesting to see that through our legislative process, the addition of a few words can completely dilute one of the main objectives of a bill. In this case, a major provision of a law that is meant to protect consumers is set up in a way that ensures that the people who need the most help get the least. It allows credit card companies such as Bank of America ( BAC), JPMorgan Chase ( JPM), Capital One ( COF) and Citigroup ( C) to continue payment allocation practices that aren't in consumers' best interests.

In order to have full control of how your debt is paid down, it is my recommendation that you avoid mixing and matching transactions on any single card. You should have a separate credit card for each type of balance - one card for your purchases and one for balance transfers.

This is because if you only pay close to the minimum, you won't be able to pay off your highest APR balance until you have finished paying off all of the lower APR balances. This could be a big problem if, for example, you have $1,000 in new purchases at 15% APR that you cannot pay down until you pay off your $10,000 in balance transferred debt at 7% APR.

While taking measures to keep your transactions separate will help, the final resolution of unfair payment allocation must come from the Federal Reserve. It is time for the Federal Reserve to act in addressing this loophole before any politicians get involved. My hope is that the Federal Reserve has learned its lesson and will no longer remain passive while credit card companies engage in unfair and deceptive practices. By taking action the Federal Reserve will ensure both a level playing field for credit card companies to compete and a payment structure that will protect consumers.

-- Written by Odysseas Papadimitriou of Evolution Finance, the parent company of Wallet Blog and Card Hub.