Interim Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Sales	$ 9,214,467	$ 8,112,930	$ 25,374,615	$ 24,252,023
Cost of sales	5,718,082	5,597,513	16,210,071	16,365,958
Gross profit	3,496,385	2,515,417	9,164,544	7,886,065
Operating Expenses
Wages	482,561	531,759	1,482,036	1,561,119
Administrative salaries and benefits	217,968	200,018	663,978	597,581
Insurance	204,340	125,739	402,158	343,987
Professional fees	83,033	57,654	177,008	166,634
Consulting	76,611	63,700	225,151	199,013
Office and miscellaneous	46,649	77,031	184,352	191,004
Interest expense	41,749	43,872	155,078	199,947
Travel	39,970	19,552	72,274	86,188
Advertising and promotion	33,456	40,171	113,980	156,117
Lease expense	28,336	115,348	158,579	350,592
Investor relations and transfer agent fee	20,761	18,268	68,867	56,976
Research	16,417	17,114	50,639	57,290
Telecommunications	12,277	10,174	32,476	32,556
Utilities	5,301	5,081	15,866	13,231
Shipping	3,634	2,246	10,897	9,595
Bad debt expense	2,000		2,000
Currency exchange	(13,050)	18,461	20,776	(49,207)
Commissions	(48,070)	1,683	9,180	6,644
Total operating expenses	1,253,943	1,347,871	3,845,295	3,979,267
Operating income	2,242,442	1,167,546	5,319,249	3,906,798
PPP loan forgiveness			537,960
Gain on sale of assets		9,490		9,490
Gain on investment	92,445	121,184	491,681	660,601
Interest income	35,475	13,583	67,920	26,197
Income before income tax	2,370,362	1,311,803	6,416,810	4,603,086
Income taxes
Income tax expense	(864,510)	(370,203)	(1,828,693)	(1,064,851)
Net income for the period including non-controlling interests	1,505,852	941,600	4,588,117	3,538,235
Less: Net income attributable to non-controlling interests	(343,228)	(359,231)	(798,161)	(558,324)
Net income attributable to controlling interest	$ 1,162,624	$ 582,369	$ 3,789,956	$ 2,979,911
Income per share (basic and diluted)	$ 0.09	$ 0.05
Income per share (basic)			$ 0.31	$ 0.24
Income per share (diluted)			$ 0.30	$ 0.24
Weighted average number of common shares (basic)	12,324,539	12,240,545	12,312,503	12,239,633
Weighted average number of common shares (diluted)	12,545,102	12,306,432	12,520,074	12,300,732
Other comprehensive income (loss):
Net income	$ 1,505,852	$ 941,600	$ 4,588,117	$ 3,538,235
Unrealized gain on foreign currency translations	(31,661)	56,670	88,284	26,804
Total comprehensive income	1,474,191	998,270	4,676,401	3,565,039
Comprehensive income – non-controlling interest	(343,228)	(359,231)	(798,161)	(558,324)
Comprehensive income attributable to Flexible Solutions International Inc.	$ 1,130,963	$ 639,039	$ 3,878,240	$ 3,006,715