Nine months after being expelled from social media for his role in inciting the Jan 6 Capitol insurrection, former President Donald Trump said on Wednesday he is launching a new media company with its own social media platform.

Truth Social will be created through a new company formed by a merger of the Trump Media and Technology Group (TMTG) and a special acquisition company (SPAC), according to a press release distributed by both organisations.

"We live in a world where the Taliban has a huge presence on Twitter, yet your favourite American President has been silenced. This is unacceptable,” Trump said in a written statement included in the release.

“I am excited to send out my first TRUTH on TRUTH Social very soon. TMTG was founded with a mission to give a voice to all. I'm excited to soon begin sharing my thoughts on TRUTH Social and to fight back against Big Tech,” he said.

“I created TRUTH Social and TMTG to stand up to the tyranny of Big Tech,” Trump was quoted as saying in the statement.

The social network, set for a beta launch next month and full rollout in the first quarter of 2022, is the first of three stages in the company's plans, followed by a subscription video-on-demand service called TMTG+ that will feature entertainment, news and podcasts, according to the news release.

Truth Social's terms of service, meanwhile, bar users from annoying any of the site's employees and from statements that “disparage, tarnish, or otherwise harm, in our opinion, us and/or the Site". It was not immediately clear who the “us” in that statement refers to.

In a slide deck on its website, the company envisions eventually competing against Amazon's AWS cloud service and Google Cloud.

A Trump representative who declined to be named confirmed the contents of the TMTG news release to Reuters. Trump spokesperson Liz Harrington also tweeted a copy.

“For so long, Big Tech has suppressed conservative voices,” the former president's son, Donald Trump Jr., told Fox News in an interview.

“Tonight my father signed a definitive merger agreement to form what will ultimately be the Trump Media and Technology Group and Truth Social" — a platform for everyone to express their feelings.

Trump welcomed to 'social media fray'

Facebook banned Trump indefinitely on January 7, later narrowing the ban to two years.

Twitter quickly followed, permanently suspending Trump's account — which had more than 88 million followers at the time — due to the “risk of further incitement of violence”.

Ever since, Trump has been looking for ways to reclaim his internet megaphone, launching several lawsuits against the tech giants.

In May, he launched a blog called “From the Desk of Donald J. Trump”, which was touted as a major new outlet — but he pulled it from the internet just a month later.

Former Trump aide Jason Miller launched a social network called Gettr earlier this year, but the former president has not yet joined it.

Shortly after Truth Social was announced, Miller congratulated Trump on “re-entering the social media fray”.

“Now Facebook and Twitter will lose even more market share,” he said in a statement tweeted by Gettr.

Twitter, Facebook and other social media platforms banned Trump from their services after hundreds of his supporters rioted at the US Capitol on Jan 6.

That protest came after a speech by Trump in which he falsely claimed that his November election loss was due to widespread fraud, an assertion rejected by multiple courts and state election officials.

The deal will list Trump Media & Technology Group on Nasdaq through a merger with Digital World Acquisition Corp, a blank-check acquisition firm led by former investment banker Patrick Orlando.

Trump Media & Technology Group will receive $293 million in cash that Digital World Acquisition Corp had in trust, assuming no shareholder of the acquisition firm chooses to redeem their shares, according to the statement.

Orlando, who has worked at Deutsche Bank and BT Capital Markets, has launched at least four Special Purpose Acquisition Company (SPACs) and has plans for two more, according to his firm's website and regulatory filings.

But none of the SPACs have completed a deal yet.

A China-based SPAC that Orlando led failed last month to complete a merger with Giga Energy Inc that would have valued the transportation solutions provider at $7.3 billion, because it could not deliver the cash required, according to regulatory filings.

Shareholder redemptions reduce the amount of cash that Digital World Acquisition Corp will have available to give to Trump Media & Technology Group at the closing of the deal.

The companies said in the statement that the completion of the merger is subject to redemptions not exceeding an agreed minimum cash requirement.

The statement did not disclose what the requirement is, though that detail is typically contained in a regulatory filing that should follow on Thursday.

The deal values Trump Media & Technology Group at $875 million, including debt, according to the news release.