Donald Trump announced Wednesday that last month he raised roughly $20 million for his campaign and $31 million to be shared with the Republican National Committee and state parties, a significant sum that could help to allay GOP concerns about his fundraising operation and capabilities.

The presumptive nominee said he personally contributed $3.8 million in June, bringing his total contributions to his campaign to $55 million. Last month, the Trump team said the candidate had forgiven over $50 million in loans to the campaign -- a move meant to show reluctant donors that their contributions would be directed to the operation and not to pay off Trump’s personal debt. Confirmation of that loan forgiveness and the allocation of the $51 million raised last month won’t be made until the Federal Election Commission’s latest report is released on July 20, in the middle of the Republican convention.

Trump’s finance officer said that 400,000 people donated to the campaign, with 94 percent of them giving under $200. The campaign established a digital fundraising operation late last month meant to cultivate grassroots donations; it brought in $26 million -- $6.6 million of which was raised in conjunction with the Trump Make America Great Again Committee, which shares funds with the RNC.

The campaign hosted 22 fundraising events for Trump Victory -- another joint fundraising committee with the RNC that shares funds with 11 state party committees -- during the last week of May and the month of June, which yielded $25 million. The RNC and the Trump campaign finalized a joint fundraising agreement in mid-May. Donors can give up to $450,000 to the joint fundraising committees, while the official campaign can only accept checks of up to $2,700.

Trump’s fundraising total for June is impressive, considering he raised just over $3 million in May, the month he became the presumptive nominee. The campaign has not yet spent any money on advertising, as the candidate has relied instead on free and earned media. Still, Trump’s June haul is less than Hillary Clinton’s, who raised $68.5 million -- $40.5 for the campaign and $28 million for the Democratic National Committee and state parties through two joint committees. Clinton has raised $288 million for the campaign and $90 million for the committees, according to the campaign. Clinton has $44 million on hand. The Trump campaign has not released its cash totals for the month. Last month, Trump had just over $1 million on hand.

The GOP nominee’s fundraising operation also lags behind that of his predecessor, Mitt Romney, who raised $106 million in June 2012 for the campaign and joint committees, surpassing President Obama’s monthly total at that time.

Still, Trump’s haul shows he is able to raise money quickly -- and it could help to recruit additional donors who have been reluctant to help finance his candidacy. Trump spent most of the campaign railing against the donor class, but he missed opportunities to collect small-dollar donations -- a sign of grassroots support --without a basic digital fundraising operation. Bernie Sanders, for example, also criticized the financial crowd but developed a sophisticated digital program that brought in millions of dollars each month.

Trump’s implementation of online fundraising came after a shake-up in the campaign late last month. Now, the team consistently solicits small donations through email.