with Michigan and exceeds the protections of PL 86-272, all
licenses,
divisions,
or
other
infrequently
occurring
members of the UBG — including members protected under
dispositions, transfers, or transactions involving tangible,
PL 86-272 — must be included when calculating the UBG’s
intangible, or real property if the property is or was used in
Business Income Tax base and apportionment formula. PL 86-
the person’s trade or business operation.
272 will only remove business income from the apportionable
• Income derived from the sale of an interest in a business that
Business Income Tax base when all members of the UBG are
constitutes an integral part of the person;’s regular trade or
protected under PL 86-272.
business.
Line 28: Business income means that part of federal taxable
• Income derived from the lease or rental of real property
income derived from business activity. For MBT purposes,
NOTE: Personal investment income, gains from the sale of
federal taxable income means taxable income as defined by IRC
property held for personal use and enjoyment, or other assets not
§ 63, except that federal taxable income shall be calculated as if
used in a trade or business, and any other income not specifically
IRC § 168(k) [as applied to qualified property placed in service
derived from a trade or business that is earned, received, or
after December 31, 2007] and IRC § 199 were not in effect. For
otherwise acquired by an Individual, an Estate, or a Trust or
a Partnership or S Corporation (or LLC federally taxed as such),
Partnership organized or established for estate or gift planning
business income includes payments and items of income and
purposes, a person organized exclusively to conduct investment
expense that are attributable to business activity of the
activity solely for a third party individual or a person related
Partnership or S Corporation and separately reported to the
to that individual, or a common trust established under the
partners or shareholders.
Collective Investment Funds Act of 2941, is not included in the
Use the Business Income Worksheet (Worksheet 4746), in
Business Income Tax base. This exclusion only applies to the
Form 4600, to calculate business income. Attach the worksheet
specific types of taxpayers identified above. Investment income
to the return. The worksheet will calculate business income
and any other types of income earned or received by all other
as defined by law in most instances. Taxpayers and tax
types of persons or taxpayers not specifically referenced must be
professionals are expected to be familiar with uncommon
included in the business income of the taxpayer.
situations within their experience, which produce business
Additions to Income
income not identified by specific lines on the worksheet, and
report that amount on the most appropriate line. Treasury may
Additions are generally required to the extent deducted in
adjust the figure resulting from Worksheet 4746 to account
arriving at federal taxable income. (Business income, line 28.)
properly for such uncommon situations.
Line 29: Enter any interest income and dividends from
For an organization that is a mutual or cooperative electric
bonds and similar obligations or securities of states other than
company exempt under IRC § 501(c)(12), business income
Michigan and their political subdivisions in the same amount
equals the organization’s excess or deficiency of revenues
that was excluded from federal taxable income (as defined for
over expenses as reported to the federal government by those
MBT purposes). Reduce this addition by any expenses related
organizations exempt from the federal income tax under the
to the foregoing income that were disallowed on the federal
IRC, less capital credits paid to members of that organization,
return by IRC § 265 or 291.
less income attributed to equity in another organization’s net
Line 30: Enter all taxes on, or measured by, net income
income, and less income resulting from a charge approved
including city and state taxes, Foreign Income Tax, and Federal
by a state or federal regulatory agency that is restricted for
Environmental Tax claimed as a deduction on the federal return.
a specified purpose and refundable if it is not used for the
Line 31: Enter the Michigan Business Tax, including
specified purpose.
surcharge, claimed as a deduction on the federal return.
For a tax-exempt person, business income means only that
part of federal taxable income (as defined for MBT purposes)
Line 32: Enter any net operating loss carryback or carryover
derived from unrelated business activity.
that was deducted in arriving at federal taxable income (as
defined for MBT purposes) reported on line 28. Enter this
For an Individual or an Estate, or for a Partnership or Trust
amount as a positive number.
organized for estate or gift planning purposes, business income
is that part of federal taxable income (as defined for MBT
Line 33: Enter any losses included in federal taxable income
purposes) derived from transactions, activities, and sources in
(as defined for MBT purposes) that are attributable to other
the regular course of the person’s trade or business, including
entities that have made a valid election to file under the MBT
the following:
and have filed under the MBT. If there is only one such entity
to report, enter its FEIN or TR number in the field on this
• All income from tangible and intangible property if the
form. If there is more than one such entity to report, enter
acquisition, rental, lease, management, or disposition of the
on the form the FEIN or TR number of one of the entities
property constitutes integral parts of the person’s regular
and attach a list of the account numbers of all. On the list
trade or business operations.
include a breakdown of the amount of this loss add-back that
• Gains or losses incurred in the taxpayer’s trade or business
is attributable to each entity. In any case, the amount on line
from stock and securities of any foreign or domestic
33 should be the total of all losses, not just the loss of the one
corporation and dividend and interest income.
entity identified on the form.
• Income derived from isolated sales, leases, assignments,
UBGs: It is not necessary to attach a list of entities in
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