The above cited legislative history demonstrates that decreases in family size are subject to the available- unit rule in §42(g)(2)(D)(ii). We see no reason why increases in family size should not be subject to the same rule. For example, if an existing low-income household’s income increases above 140% of the applicable income limitation, then the unit continues to be treated as a low-income unit if the available-unit rule under §42(g)(2)(D)(ii) is met. Yet, if the addition of a new member to an existing low-income household results in the household being treated as a new household, then any increases in income above the applicable income limitation, no matter how small, would result in the unit not being a low-income unit. Provided the household is not manipulating the income limitation requirements, we see no difference between increased household income and increased household income resulting from the addition of a new member to the low-income household.
Accordingly, we continue to believe that rule for increases in family size in the Guide for Completing Form 8823 is correct. The new member of the existing low-income household must complete an initial income certification and provide third party verification regardless of whether §142(d)(3)(A), as amended by section 3010(a) of the Housing Assistance Tax Act of 2008, applies to the project.
Revised October 2009