5. Investment in Local Partnerships: Combined Balance Sheets of the Local Partnerships (Details) - Combined Balance Sheets - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Cash	$ 75,844	$ 179,344
Rents receivable	5,065	28,960
Escrow deposits and reserves	386,784	1,296,653
Land	179,799	179,799
Buildings and Improvements, net	3,464,656	6,037,801
Other assets	82,650	105,387
Total assets	4,194,798	7,827,944
Accounts payable and accrued expenses	11,899	39,284
Due to related parties	56,474	861,622
Mortgages and notes payable	4,609,748	6,236,502
Accrued interest	324,377	2,075,697
Other liabilities	36,264	53,034
Total liabilities	5,038,762	9,266,139
American Tax Credit Trust, Series I Capital contributions, net of distributions	1,405,544	3,775,145
American Tax Credit Trust, Series I Cumulative loss	(1,197,744)	(3,273,345)
Total American Tax Credit Trust, Series I	207,800	501,800
General partners and other limited partners Capital contributions, net of distributions	100	(5,897)
General partners and other limited partners Cumulative loss	(1,051,864)	(1,934,098)
Total General partners and other limited partners	(1,051,764)	(1,939,995)
Total Equity (Deficit)	(843,964)	(1,438,195)
Total Liabilities & Equity (Deficit)	$ 4,194,798	$ 7,827,944