Exhibit 99.1

United States Commodity Index Funds Trust

United States Commodity Index Fund

Monthly Account Statement

For the Month Ended August 31, 2023

Statement of Income (Loss)
Income
Realized Trading Gain (Loss) on Commodity Futures	$	2,368,390
Unrealized Gain (Loss) on Market Value of Commodity Futures		(2,003,367	)
Dividend Income		315,517
Interest Income		476,197
ETF Transaction Fees		700
Total Income (Loss)	$	1,157,437
Expenses
Management Fees	$	121,257
Professional Fees		28,646
Brokerage Commissions		12,234
Directors' Fees and insurance		5,929
Total Expenses	$	168,066
Net Income (Loss)	$	989,371

Statement of Changes in Net Asset Value
Net Asset Value Beginning of Month 8/1/23	$	178,854,331
Additions (200,000 Shares)		11,532,921
Withdrawals (50,000 Shares)		(2,901,049	)
Net Income (Loss)		989,371
Net Asset Value End of Month	$	188,475,574
Net Asset Value Per Share (3,200,000 Shares)	$	58.90

To the Shareholders of United States Commodity Index Fund:

Pursuant to Rule 4.22(h) under the Commodity Exchange Act, the undersigned represents that, to the best of his knowledge and belief, the information contained in the Account Statement for the month ended August 31, 2023 is accurate and complete.

/s/ Stuart P. Crumbaugh

Stuart P. Crumbaugh

Chief Financial Officer

United States Commodity Funds LLC, Sponsor of United States Commodity Index Fund

United States Commodity Funds LLC

1850 Mt. Diablo Boulevard, Suite 640

Walnut Creek, CA 94596

United States Commodity Index Funds Trust

United States Copper Index Fund

Monthly Account Statement

For the Month Ended August 31, 2023

Statement of Income (Loss)
Income
Realized Trading Gain (Loss) on Commodity Futures	$	(8,311,825	)
Unrealized Gain (Loss) on Market Value of Commodity Futures		251,301
Dividend Income		219,602
Interest Income		443,004
ETF Transaction Fees		2,100
Total Income (Loss)	$	(7,395,818	)
Expenses
Management Fees	$	82,262
Professional Fees		38,288
Brokerage Commissions		9,874
Directors' Fees and insurance		7,306
Total Expenses	$	137,730
Net Income (Loss)	$	(7,533,548	)

Statement of Changes in Net Asset Value
Net Asset Value Beginning of Month 8/1/23	$	144,950,678
Additions (700,000 Shares)		16,599,470
Withdrawals (150,000 Shares)		(3,491,304	)
Net Income (Loss)		(7,533,548	)
Net Asset Value End of Month	$	150,525,296
Net Asset Value Per Share (6,400,000 Shares)	$	23.52

To the Shareholders of United States Copper Index Fund:

Pursuant to Rule 4.22(h) under the Commodity Exchange Act, the undersigned represents that, to the best of his knowledge and belief, the information contained in the Account Statement for the month ended August 31, 2023 is accurate and complete.

/s/ Stuart P. Crumbaugh

Stuart P. Crumbaugh

Chief Financial Officer

United States Commodity Funds LLC, Sponsor of United States Copper Index Fund

United States Commodity Funds LLC

1850 Mt. Diablo Boulevard, Suite 640

Walnut Creek, CA 94596

United States Commodity Index Funds Trust

Monthly Account Statement

For the Month Ended August 31, 2023

Statement of Income (Loss)
Income
Realized Trading Gain (Loss) on Commodity Futures	$	(5,943,435	)
Unrealized Gain (Loss) on Market Value of Commodity Futures		(1,752,066	)
Dividend Income		535,119
Interest Income		919,201
ETF Transaction Fees		2,800
Total Income (Loss)	$	(6,238,381	)
Expenses
Management Fees	$	203,519
Professional Fees		66,934
Brokerage Commissions		22,108
Directors' Fees and insurance		13,235
Total Expenses	$	305,796
Net Income (Loss)	$	(6,544,177	)

Statement of Changes in Net Asset Value
Net Asset Value Beginning of Month 8/1/23	$	323,805,009
Additions (900,000 Shares)		28,132,391
Withdrawals (200,000 Shares)		(6,392,353	)
Net Income (Loss)		(6,544,177	)
Net Asset Value End of Month	$	339,000,870

To the Shareholders of the Series of the United States Commodity Index Funds Trust:

Pursuant to Rule 4.22(h) under the Commodity Exchange Act, the undersigned represents that, to the best of his knowledge and belief, the information contained in the Account Statement for the month ended August 31, 2023 is accurate and complete.

/s/ Stuart P. Crumbaugh

Stuart P. Crumbaugh

Chief Financial Officer

United States Commodity Funds LLC, Sponsor of United States Commodity Index Funds Trust

United States Commodity Funds LLC

1850 Mt. Diablo Boulevard, Suite 640

Walnut Creek, CA 94596