Trump's campaign and two fundraising committees that jointly raise funds with the Republican National Committee collected a total of almost $20.2 million in the first quarter, the Post reported.
Trump's campaign raised $10.1 million in 2018's first three months and has $28.3 million in the bank, the campaign finance report shows.
Trump has opted - unlike presidents before him - to begin fundraising in the early part of the term. He could use some of the money which he has already raised to help Republicans in the upcoming midterm election in November.
Besides increasing money due to his effort, money for campaigns have also amassed using all the Republican National Committee, which utilizes that capital.
His re-election campaign finished 2017 with US$22 million in cash.
More than one-fifth of the $3.9 million that President Donald Trump's 2020 re-election campaign has spent this year has gone to legal fees, the campaign's latest quarterly Federal Election Commission filing shows.
Trump's campaign is pouring money into lawyers amid the special counsel's intensifying investigation into possible Kremlin collusion with the campaign and obstruction of justice, and entanglements with adult-film actress Stormy Daniels and her fight to tell her story.
Using campaign funds to pay for the president's mounting legal fees related to Daniels and the Russian Federation investigation means that the money small-dollar donors are giving to the president's campaign isn't all going toward traditional reelection efforts like ads, campaign staff payroll, and fundraising.
In addition to legal fees, he has also used that money to keep a small campaign staff, to fund campaign rallies and to pay for digital advertising focused on his supporters.
Trump registered for re-election the day he took office.
The campaign s pent almost $150,000 at businesses owned by the president this year, including for lodging, catering and rent at properties that include the Trump International Hotel in Washington and Trump Tower in Manhattan.