Donald Trump claims net worth of more than $10 bn
Republican U.S. presidential candidate Donald Trump delivers a foreign policy speech at the Mayflower Hotel in Washington, US April 27, 2016. (REUTERS/Kevin Lamarque)

Republican presumptive presidential nominee Donald Trump claimed again Tuesday that he is worth "in excess of $10 billion" -- more than twice the level of independent estimates.

The New York real estate tycoon said he filed his personal financial disclosure (PFD) form with the Federal Election Commission (FEC), a step every White House aspirant must take to qualify as a candidate.

The commission has yet to release the document but is expected to do so within 30 days.

The Trump campaign said his net worth has increased since his last PFD was filed last July and is now "in excess of $10 billion."

"I filed my PFD, which I am proud to say is the largest in the history of the FEC," Trump declared in the statement.

"I have built an incredible company and have accumulated one of the greatest portfolios of real estate assets, many of which are considered to be among the finest and most iconic properties in the world," he added.

"This is the kind of thinking the country needs."

Bill and Hillary Clinton, meanwhile, also released financial statements, disclosing late Tuesday that they raked in a combined $6.75 million in paid speeches, US media reported.

Clinton, the likely Democratic presidential nominee, has been roundly criticized over her massive paydays for speeches to big banks and investment firms since leaving the State Department.

Her opponent for the nomination, socialist Bernie Sanders, has called on Clinton to release transcripts of her speeches, suggesting that the texts would reveal cozy ties with American corporations -- a political liability for a Democratic standard bearer.

According to campaign documents cited by ABC News, Clinton last year gave six paid speeches for a total income of $1.475 million.

Her biggest payday was for a March 3, 2015 speech to eBay, which earned her $315,000.

Clinton has not given any paid speeches since announcing her presidential campaign in April of last year.

The document also shows that Bill Clinton gave 22 paid speeches last year for a total of $5.25 million, ABC reported.

- 500 companies -

The Trump campaign, meanwhile, said his revenues increased by some $190 million, and that as reported in his latest statement, the billionaire's income stood in excess of $557 million, excluding dividends, interest, capital gains, rents and royalties.

In July, one month after he launched his presidential bid, Trump's disclosure said he held positions with more than 500 companies and organizations, and had 168 different assets and sources of income.

The form showed he claimed $362 million in income in 2014.

Researchers for the magazine Forbes argued last year that Trump is worth no more than $4 billion, pointing out that he lost a string of business deals after offending millions by calling Mexicans rapists and drug traffickers.

Trump's personal financial disclosure is not a release of tax returns.

Most presidential candidates have released their tax returns as a traditional step in their campaign but Trump has not, citing an ongoing audit of his finances.

On Friday when pressed by ABC about his tax rate, Trump said it was "none of your business," but added that he would release his returns when the audit was complete.

His refusal has prompted criticism from Democrats, as well as prominent Republicans including 2012 presidential nominee Mitt Romney, who has warned that Trump might be hiding a "bombshell" in his tax returns.