71.80(16)(a) (a) All nonresident persons, whether incorporated or not, engaging in construction contracting in this state as contractor or subcontractor and not otherwise regularly engaged in business in this state, shall file a surety bond with the department, payable to the department of revenue, to guarantee the payment of income or franchise taxes, required unemployment insurance contributions, sales and use taxes and income taxes withheld from wages of employees, together with any penalties and interest thereon. The department shall approve the form and contents of such bond. The amount of the bond shall be 3 percent of the contract or subcontract price on all contracts of $50,000 or more or 3 percent of contractor's or subcontractor's estimated cost-and-profit under a cost-plus contract of $50,000 or more. When the aggregate of 2 or more contracts in one calendar year is $50,000 or more the amount of the bond or bonds shall be 3 percent of the aggregate amount of such contracts. Such surety bond must be filed within 60 days after construction is begun in this state by any such contractor or subcontractor on any contract the price of which is $50,000 or more (or the estimated cost-and-profit of which is $50,000 or more), or within 60 days after construction is begun in this state on any contract for less than $50,000, when the amount of such contract, when aggregated with any other contracts, construction on which was begun in this state in the same calendar year, equals or exceeds $50,000. If the department concludes that no bond is necessary to protect the tax revenues of the state, including contributions under ch. 108, the requirements under this subsection may be waived by the secretary of revenue or the secretary's designated departmental representative. The bond shall remain in force until the liability thereunder is released by the secretary or the secretary's designated departmental representative.

71.80(16)(b) (b) A construction contractor required to file a surety bond under par. (a) may, in lieu of such requirement, but subject to approval by the department, deposit with the secretary of administration an amount of cash equal to the face of the bond that would otherwise be required. If an offer to deposit is made, the department shall issue a certificate to the secretary of administration authorizing the secretary to accept payment of such moneys and to give the secretary's receipt therefor. A copy of such certificate shall be sent to the contractor who shall, within the time fixed by the department, pay such amount to the secretary of administration. A copy of the receipt of the secretary of administration shall be filed with the department. Upon final determination by the department of such contractor's liability for state income or franchise taxes, required unemployment insurance contributions, sales and use taxes, and income taxes withheld from wages of employees, interest and penalties, by reason of such contract or contracts, the department shall certify to the secretary of administration the amount of taxes, penalties, and interest as finally determined, shall instruct the secretary of administration as to the proper distribution of such amount, and shall state the amount, if any, to be refunded to such contractor. The secretary of administration shall make the payments directed by such certificate within 30 days after receipt thereof. Amounts refunded to the contractor are without interest.

71.80(16)(c) (c) All persons subject to this subsection shall notify the department of revenue of the completion of a construction project in this state within 30 days after such completion.

71.80(18) (18) Timely filing defined. Documents and payments required or permitted by this chapter that are mailed shall be considered furnished, reported, filed or made on time, if mailed in a properly addressed envelope, with postage duly prepaid, which envelope is postmarked, or marked or recorded electronically as provided under section 7502 (f) (2) (c) of the Internal Revenue Code, before midnight of the date prescribed for such furnishing, reporting, filing or making, provided such document or payment is actually received by the department or at the destination that the department or the department of administration prescribes within 5 days of such prescribed date. Documents and payments that are not mailed are timely if they are received on or before the due date by the department or at the destination that the department or the department of administration prescribes. For purposes of this subsection, “mailed" includes delivery by a delivery service designated under section 7502 (f) of the Internal Revenue Code.

71.80(19)(a)(a) Rounding amounts. With respect to any amount required to be shown on a form prescribed for any return, statement or other document required by this chapter, if the amount of such item is other than a whole dollar amount the fractional part of a dollar shall be disregarded unless it amounts to 50 cents or more, in which case the amount (determined without regard to the fractional part of a dollar) shall be increased to the next whole dollar.

71.80(19)(b) (b) Election not to use whole dollar amounts. Any person making a return, statement or other document required by this chapter shall be allowed to make such return, statement or other document without regard to par. (a).

71.80(19)(c) (c) Inapplicability to computation of amount. Paragraph (a) does not apply to items which must be taken into account in making the computations necessary to determine the total amount required to be shown on a form, statement or other document but applies only to such final amount.

71.80(21) (21) Business entity conversion. Notwithstanding any provision of ss. 178.1141 to 178.1145, 179.1141 to 179.1145, 180.1161, 181.1161, and 183.1041 to 183.1045, the conversion of a business entity to another form of business entity under s. 178.1141, 179.1141, 180.1161, 181.1161, or 183.1041 shall be treated for state tax purposes in the same manner as the conversion is treated for federal tax purposes.

71.80(21m) (21m) Business entity interest exchange. Notwithstanding any provision of ss. 178.1131 to 178.1135, 179.1131 to 179.1135, 180.1102, 180.11021, 180.11032, 180.1105, 180.1106, 181.1131 to 181.1135, and 183.1031 to 183.1035, an interest exchange under s. 178.1131, 179.1131, 180.1102, 181.1131, or 183.1031 shall be treated for state tax purposes in the same manner as the interest exchange is treated for federal tax purposes.

71.80(22) (22) Business entity merger. Notwithstanding any provision of ss. 178.1121 to 178.1125, 179.1121 to 179.1125, 180.1101, 180.11012, 180.11031 to 180.1106, 181.1101 to 181.11055, and 183.1021 to 183.1025, the merger of a business entity with one or more business entities under s. 178.1121, 179.1121, 180.1101, 181.1101, or 183.1021 shall be treated for state tax purposes in the same manner as the merger is treated for federal tax purposes.

71.80(22m) (22m) Business entity domestication. Notwithstanding any provision of ss. 178.1151 to 178.1155, 179.1151 to 179.1155, 180.1171 to 180.1175, 181.1171 to 181.1175, and 183.1051 to 183.1055, a domestication under s. 178.1151, 179.1151, 180.1171, 181.1171, or 183.1051 shall be treated for state tax purposes in the same manner as the domestication is treated for federal tax purposes.

71.80(23)(a)(a) The deductions provided under ss. 71.05 (6) (b) 45., 71.26 (2) (a) 8., 71.34 (1k) (k), and 71.45 (2) (a) 17. shall be allowed for any interest expenses, rental expenses, intangible expenses, or management fees described in ss. 71.05 (6) (a) 24., 71.26 (2) (a) 7., 71.34 (1k) (j), or 71.45 (2) (a) 16. if any of the following applies to the interest expenses, rental expenses, intangible expenses, or management fees:

71.80(23)(a)1. 1. The related entity to which the taxpayer paid, accrued, or incurred the interest expenses, rental expenses, intangible expenses, or management fees during the taxable year directly or indirectly paid, accrued, or incurred such amounts in the same taxable year to a person who is not a related entity or the related entity to which the taxpayer paid, accrued, or incurred such expenses or fees is a holding company or a direct or indirect subsidiary of a holding company, as defined in 12 USC 1841 (a) or (l) or 12 USC 1467a (a) (1) (D), not including any entity that is organized under the laws of another jurisdiction and that primarily holds and manages investments of a bank, subsidiary, or affiliate. For purposes of this subdivision, “interest" does not include interest that is paid in connection with any debt that is incurred to acquire the taxpayer's assets or stock under section 368 of the Internal Revenue Code. If a portion of such an interest expense, rental expense, intangible expense, or management fee is paid, accrued, or incurred in the same taxable year to a person who is not a related entity, that portion shall be allowed as a deduction to the taxpayer.

71.80(23)(a)2. 2. The related entity was subject to tax on, or measured by, its net income or receipts in this state or any state, U.S. possession, or foreign country; the related entity's tax base in such state, U.S. possession, or foreign country included the income received from the taxpayer for the interest expenses, rental expenses, intangible expenses, or management fees; the related entity's aggregate effective tax rate applied to such income or receipts was at least 80 percent of the taxpayer's aggregate effective tax rate; and the related entity is not a real estate investment trust under section 856 of the Internal Revenue Code, other than a qualified real estate investment trust. For purposes of this subdivision, “any state, U.S. possession, or foreign country" does not include any state, U.S. possession, or foreign country under the laws of which the taxpayer files with the related entity, or the related entity files with another entity, a combined income tax report or return, a consolidated income tax report or return, or any other report or return that is due because of the imposition of a tax that is measured on or by income or receipts, if the report or return results in eliminating the tax effects of transactions, directly or indirectly, between either the taxpayer and the related entity or between the related entity and another entity.

71.80(23)(a)3. 3. The taxpayer establishes that the transaction satisfies any other conditions that the department considers relevant, based on the facts and circumstances, to determine that the primary motivation for the transaction was one or more business purposes other than the avoidance or reduction of state income or franchise taxes; that the transaction changed the economic position of the taxpayer in a meaningful way apart from tax effects; and that the interest expenses, rental expenses, intangible expenses, or management fees were paid, accrued, or incurred using terms that reflect an arm's-length relationship.

71.80(23)(b) (b) Notwithstanding par. (a), the deductions provided under ss. 71.05 (6) (b) 45., 71.26 (2) (a) 8., 71.34 (1k) (k), and 71.45 (2) (a) 17. shall not be allowed for any interest expenses, rental expenses, intangible expenses, or management fees that are directly or indirectly paid, accrued, or incurred to, or in connection directly or indirectly with one or more direct or indirect transactions with, one or more related entities, if the aggregate amount paid, accrued, or incurred for those related entity transactions is not disclosed on a separate form prescribed by the department in the manner prescribed by the department.

71.80(24) (24) Throwback transition. For persons subject to tax under this chapter whose sales factor includes sales under s. 71.04 (7) (a) or 71.25 (9) (a), the department shall deem timely paid the estimated tax payments attributable to the difference between the person's tax liability for the taxable year and the person's tax liability for the taxable year computed under ch. 71, 2007 stats., for installments that become due during the period beginning on January 1, 2009, and ending on July 1, 2009, provided that such estimated tax payments are paid by the next installment due date that follows in sequence following July 1, 2009. However, if the next installment due date that follows in sequence following July 1, 2009, is less than 45 days after July 1, 2009, such estimated tax payments, in addition to the payment due less than 45 days after July 1, 2009, shall be deemed timely paid if paid by the next subsequent installment due date.

71.80(25)(a)(a) No offset of Wisconsin income may be made under s. 71.05 (8) (b) 1., 71.26 (4) (a), or 71.45 (4) (a) unless the incurred loss was computed on a return that was filed within 4 years of the unextended due date for filing the original return for the taxable year in which the loss was incurred.

71.80(25)(b) (b) No carry-back of a loss may be allowed under s. 71.05 (8) (b) 1. unless claimed within 4 years of the unextended due date for filing the original return for the taxable year to which the loss is carried back.

71.80(26)(a) (a) Each pass-through entity shall designate, in the manner prescribed by the department, a pass-through member or other person with substantial presence in the United States as the representative of the pass-through entity. In the case in which such designation is not in effect, the pass-through entity shall appoint a representative within 60 days following a written request by the department. If the pass-through entity fails to appoint a representative following a written request by the department, the department may designate a representative and notify the pass-through entity, or the beneficiaries in the case of a closed estate or trust, in writing of the designation. The pass-through entity may at any time provide a written statement to the department designating a new representative and the department shall accept the designation if the statement is signed by an authorized agent of the pass-through entity. The representative designated by a pass-through entity under this paragraph may be different than the pass-through entity's federal representative or authorized agent.