TIMBERLINE RESOURCES CORPORATION AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($)	12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
OPERATING EXPENSES:
Mineral exploration	$ 522,298	$ 423,946
Salaries and benefits	464,380	388,858
Professional fees	147,401	203,994
Insurance	92,562	91,967
Loss on abandonment of mineral rights	3,231,700
Gain on sale of royalties		(40,000)
Gain on lease of mineral rights		(10,000)
Gain on equipment transferred to related parties		(2,500)
General and administrative	626,747	644,640
TOTAL OPERATING EXPENSES	5,085,088	1,700,905
LOSS FROM OPERATIONS	(5,085,088)	(1,700,905)
OTHER INCOME (EXPENSE):
Foreign exchange gain (loss) and other	(2,480)	4
Miscellaneous other income	64,633
Interest expense	(34,859)
Realized gain on sale of available-for-sale securities		124,086
TOTAL OTHER INCOME (EXPENSE)	27,294	124,090
LOSS BEFORE INCOME TAXES	(5,057,794)	(1,576,815)
INCOME TAX PROVISION		68,985
NET LOSS	(5,057,794)	(1,645,800)
OTHER COMPREHENSIVE INCOME (LOSS):
Unrealized gain (loss) on available-for-sale equity securities, net of tax		(47,275)
Reclassification of (gain) on available-for-sale securities sold		(80,840)
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)		(128,115)
COMPREHENSIVE LOSS	$ (5,057,794)	$ (1,773,915)
NET LOSS PER SHARE AVAILABLE TO COMMON STOCKHOLDERS, BASIC AND DILUTED	$ (0.13)	$ (0.06)
WEIGHTED-AVERAGE NUMBER OF COMMON SHARES OUTSTANDING, BASIC AND DILUTED	39,437,019	28,829,486