7. Taxable Income: Differences Between Investment in Local Partnerships for Financial Reporting and Tax Purposes (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Details
Investment in local partnerships - Tax	$ (604,610)	$ (747,378)
Differences between the investment in local partnerships for financial reporting and tax purposes	$ 604,610	$ 747,378

Represents the monetary amount of Differences between the investment in local partnerships for financial reporting and tax purposes, as of the indicated date.

No definition available.

Name:	fil_DifferencesBetweenTheInvestmentInLocalPartnershipsForFinancialReportingAndTaxPurposes
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant