(1) Description of test.
Under section 141(b)(3) (the unrelated or disproportionate use test), an issue meets the private business tests if the amount of private business use and private security or payments attributable to unrelated or disproportionate private business use exceeds 5 percent of the proceeds of the issue. For this purpose, the private business use test is applied by taking into account only use that is not related to any government use of proceeds of the issue (unrelated use) and use that is related but disproportionate to any government use of those proceeds (disproportionate use).
(2) Application of unrelated or disproportionate use test --
(i) Order of application.
The unrelated or disproportionate use test is applied by first determining whether a private business use is related to a government use. Next, private business use that relates to a government use is examined to determine whether it is disproportionate to that government use.
(ii) Aggregation of unrelated and disproportionate use.
All the unrelated use and disproportionate use financed with the proceeds of an issue are aggregated to determine compliance with the unrelated or disproportionate use test. The amount of permissible unrelated and disproportionate private business use is not reduced by the amount of private business use financed with the proceeds of an issue that is neither unrelated use nor disproportionate use.
(iii) Deliberate actions.
A deliberate action that occurs after the issue date does not result in unrelated or disproportionate use if the issue meets the conditions of section 1.141-12(a).