A filing in the US District Court for the Southern District of New York on Saturday followed an appeal submitted on Friday by Trump and his affiliates against an existing order from a federal judge allowing the banks to hand over financial records to Democratic lawmakers.

Amid an ongoing legal battle between the Republican president and Democrats in Congress, the agreement to hold off for now on enforcing the subpoenas for Trump's financial records was a rare accord between Trump's attorneys, the banks and the House Intelligence and the Financial Services Committees.

"The parties have reached an agreement regarding compliance with and enforcement of the subpoenas" while the appeal to the 2nd US Circuit Court of Appeals is pending, the filing said.

Parts of the subpoenas have been included in court filings. The subpoena on Deutsche Bank seeks records of accounts, transactions and investments linked to Trump, his three oldest children, their immediate family members and several Trump Organization entities, as well as records of ties they might have to foreign entities.

Deutsche Bank has long been a principal lender for Trump's real estate business and a 2017 disclosure form showed that Trump had at least $US130 million ($A188 million) of liabilities to the bank.

The subpoena on Capital One seeks records related to multiple entities tied to the Trump Organization's hotel business. It followed an informal request to the bank by Democratic lawmakers in March seeking records related to potential conflicts of interest tied to Trump's Washington hotel and other businesses.

A lawyer for the Trumps argued earlier this week that the subpoenas exceeded the authority of Congress and were "the epitome of an inquiry into private or personal matters".

Australian Associated Press