The Federal Reserve issued two rules on how financial institutions should adapt to Basel III regulatory capital standards while undergoing the next cycle of stress tests.

The biggest banks, with assets of $50 billion or more, must adhere to the Basel III rules finalized in the U.S. in July, while financial institutions with between $10 billion and $50 billion in total assets will be given a one-year transition period for incorporating the rules, the Federal Reserve Board said in a release in Washington.

The interim final rules are effective immediately, the Fed said. The central bank will accept comments on the rules through Nov. 25 and may enact revisions in response to the comments.