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Percentage of bonus shares that the members of the program are entitled, on all investments that they make.

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Represents the revenue remaining performance obligation expected timing of satisfaction period 1.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue Recognition (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Revenue Recognition
Membership fee			$ 275
Percentage of bonus shares that the members are entitled			10.00%
Term of contract with customers			1 year
Deferred revenue	$ 3,723,721		$ 3,723,721		$ 2,880,316
Contract asset	0		0
Total revenues	39,810,718	$ 11,866,611	$ 70,175,075	$ 21,624,208
Regulation Crowdfunding platform fees
Revenue Recognition
Revenue remaining performance obligation expected timing of satisfaction period			12 months
Total revenues	2,959,875	2,711,236	$ 4,170,295	5,261,337
Regulation A commissions
Revenue Recognition
Total revenues	248,632	203,527	2,250,406	517,607
StartEngine Premium
Revenue Recognition
Total revenues	777,540	497,500	1,591,435	983,500
StartEngine Secure
Revenue Recognition
Total revenues	308,813	272,221	657,083	538,388
StartEngine Private
Revenue Recognition
Total revenues	34,104,729	6,773,806	58,725,538	11,485,563
Other service revenue
Revenue Recognition
Total revenues	20,405	36,174	46,386	114,894
Venture Club (formerly OWNers Bonus) revenue
Revenue Recognition
Total revenues	$ 1,390,724	$ 1,372,147	$ 2,733,932	$ 2,722,919