Five days after Trump's demand to cap credit card rates, bankers and lobbyists told CNBC they have yet to receive any formal or written guidance on the policy.

Posting on Truth Social, Trump said said he would "no longer let the American Public be 'ripped off' by Credit Card Companies."

A 10% rate cap would make large swaths of the credit card industry unprofitable, especially tied to customers with less-than-ideal credit, banks say.

The US president has called for interest rates on credit cards to be capped at 10% for one year.

Capital One shares sank Monday after Trump called for a 10% cap on credit card rates, a major profit driver for the company.

Capping borrowing costs in the US has bipartisan support, but experts warn of unintended consequences.

Banks say a proposed 10% cap on credit card interest rates would result in fewer credit card accounts for Americans and a hit to the U.S. economy.

The opportunity may be ripe for investors to buy bank stocks at a discount.

Banks such as Citigroup and Wells Fargo say capping rates would limit credit and hurt economic growth

President Donald Trump noted at the Detroit Economic Club that he's calling to cap credit card rates at 10 percent for a year. But banks are pushing back.

Five days after Trump's demand to cap credit card rates, bankers and lobbyists told CNBC they have yet to receive any formal or written guidance on the policy.

The proposal was a major topic this week during earnings calls.

Trump called for banks to cap credit card interest rates at 10%, an idea that has been roundly rejected by industry executives and their lobbyists this week.

The White House has not provided any detail about what will happen to credit card companies that don’t lower card rates.