DEPARTMENT OF REVENUE

(1) Introduction. This rule applies to deaths occurring on or after May 17, 2005, and describes the nature of Washington state's estate tax as it is imposed by chapter 83.100 RCW (Estate and Transfer Tax Act). It also defines terms that will be used throughout chapter 458-57 WAC (Washington Estate and Transfer Tax Reform Act rules). The estate tax rule on the nature of estate tax and definitions for deaths occurring on or before May 16, 2005, can be found in WAC 458-57-005.

(2) Nature of Washington's estate tax. The estate tax is neither a property tax nor an inheritance tax. It is a tax imposed on the transfer of the entire taxable estate and not upon any particular legacy, devise, or distributive share.

(a) Relationship of Washington's estate tax to the federal estate tax. The department administers the estate tax under the legislative enactment of chapter 83.100 RCW, which references the Internal Revenue Code (IRC) as it existed January 1, 2005. Federal estate tax law changes enacted after January 1, 2005, do not apply to the reporting requirements of Washington's estate tax. The department will follow federal Treasury Regulations section 20 (Estate tax regulations), in existence on January 1, 2005, to the extent they do not conflict with the provisions of chapter 83.100 RCW or 458-57 WAC. For deaths occurring January 1, 2009, and after, Washington has different estate tax reporting and filing requirements than the federal government. There will be estates that must file an estate tax return with the state of Washington, even though they are not required to file with the federal government. The Washington state estate and transfer tax return and the instructions for completing the return can be found on the department's web site at http://www.dor.wa.gov/ under the heading titled forms. ((The return and instructions can also be requested by calling the department's estate tax section at 360-570-3265, option 2.))

(b) Lifetime transfers. Washington estate tax taxes lifetime transfers only to the extent included in the federal gross estate. The state of Washington does not have a gift tax.

(3) Definitions. The following terms and definitions are applicable throughout chapter 458-57 WAC:

(a) "Absentee distributee" means any person who is the beneficiary of a will or trust who has not been located;

(b) "Applicable exclusion amount" means:

(d) "Decedent" means a deceased individual;

(((c))) (e) "Department" means the department of revenue, the director of that department, or any employee of the department exercising authority lawfully delegated to him by the director;

(((d))) (f) "Escheat" of an estate means that whenever any person dies, whether a resident of this state or not, leaving property in an estate subject to the jurisdiction of this state and without being survived by any person entitled to that same property under the laws of this state, such estate property shall be designated escheat property and shall be subject to the provisions of RCW 11.08.140 through 11.08.300;

(((e))) (g) "Federal return" means any tax return required by chapter 11 (Estate tax) of the Internal Revenue Code;

(((f))) (h) "Federal tax" means tax under chapter 11 (Estate tax) of the Internal Revenue Code;

(((g))) (i) "Federal taxable estate" means the taxable estate as determined under chapter 11 of the Internal Revenue Code without regard to:

(i) The termination of the federal estate tax under section 2210 of the IRC or any other provision of law; and

(ii) The deduction for state estate, inheritance, legacy, or succession taxes allowable under section 2058 of the IRC.

(((h))) (j) "Gross estate" means "gross estate" as defined and used in section 2031 of the Internal Revenue Code;

(((i))) (k) "Internal Revenue Code" or "IRC" means, for purposes of this chapter, the United States Internal Revenue Code of 1986, as amended or renumbered on January 1, 2005;

(((j))) (l) "Person" means any individual, estate, trust, receiver, cooperative association, club, corporation, company, firm, partnership, joint venture, syndicate, or other entity and, to the extent permitted by law, any federal, state, or other governmental unit or subdivision or agency, department, or instrumentality thereof;

(((k))) (m) "Person required to file the federal return" means any person required to file a return required by chapter 11 of the Internal Revenue Code, such as the personal representative (executor) of an estate;

(((l))) (n) "Property," when used in reference to an estate tax transfer, means property included in the gross estate;

(((m))) (o) "Resident" means a decedent who was domiciled in Washington at time of death;

(((n))) (p) "Spouse" means two individuals with a valid marriage recognized under this or another jurisdiction's laws and includes state registered domestic partners and same-sex spouses. It does not include a marriage prohibited under Washington state law because of close kinship, incest, or bigamy;

(q) "State return" means the Washington estate tax return required by RCW 83.100.050;

(((o))) (r) "Taxpayer" means a person upon whom tax is imposed under this chapter, including an estate or a person liable for tax under RCW 83.100.120;

(((p))) (s) "Transfer" means "transfer" as used in section 2001 of the Internal Revenue Code and includes any shifting upon death of the economic benefit in property or any power or legal privilege incidental to the ownership or enjoyment of property. However, "transfer" does not include a qualified heir disposing of an interest in property qualifying for a deduction under RCW 83.100.046;

(((q))) (t) "Washington taxable estate" means the "federal taxable estate"((:

(vi) Less any amount included in the federal taxable estate pursuant to IRC § 2044 (inclusion of amounts for which a federal QTIP election was previously made) from a predeceased spouse that died on or after May 17, 2005)) and includes, but is not limited to, the value of any property included in the gross estate under section 2044 of the Internal Revenue Code, regardless of whether the decedent's interest in such property was acquired before May 17, 2005:

(D) The amount of any deduction allowed under RCW 83.100.048 for the qualified family-owned business interest.

(1) Introduction. This rule applies to deaths occurring on or after May 17, 2005, and is intended to help taxpayers prepare their return and pay the correct amount of Washington state estate tax. It explains the necessary steps for determining the tax and ((provides examples of)) how the tax is calculated. The estate tax rule on valuation of property etc., for deaths occurring on or before May 16, 2005, can be found in WAC 458-57-015.

(2) Determining the property subject to Washington's estate tax.

(a) General valuation information. The value of every item of property in a decedent's gross estate is its date of death fair market value. However, the personal representative may elect to use the alternate valuation method under section 2032 of the Internal Revenue Code (((IRC))), and in that case the value is the fair market value at that date, including the adjustments prescribed in that section of the ((IRC)) Internal Revenue Code. The valuation of certain farm property and closely held business property, properly made for federal estate tax purposes pursuant to an election authorized by section 2032A of the Internal Revenue Code of 2005 ((IRC)), is binding on the estate for state estate tax purposes.

(b) How is the gross estate determined? The first step in determining the value of a decedent's Washington taxable estate is to determine the total value of the gross estate. The value of the gross estate includes the value of all the decedent's tangible and intangible property at the time of death. In addition, the gross estate may include property in which the decedent did not have an interest at the time of death. A decedent's gross estate for estate tax purposes may therefore be different from the same decedent's estate for local probate purposes. Sections 2031 through 2046 of the ((IRC)) Internal Revenue Code provide a detailed explanation of how to determine the value of the gross estate.

(c) Deductions from the gross estate. The value of the taxable estate is determined by subtracting the authorized exemption and deductions from the value of the gross estate. Under various conditions and limitations, deductions are allowable for expenses, indebtedness, taxes, losses, charitable transfers, and transfers to a surviving spouse. While sections 2051 through 2056A of the ((IRC)) Internal Revenue Code provide a detailed explanation of how to determine the value of the taxable estate the following areas are of special note:

(i) Funeral expenses.

(A) Washington is a community property state and under Estate of Julius C. Lang v. Commissioner, 97 Fed. 2d 867 (9th Cir. 1938) affirming the reasoning of Wittwer v. Pemberton, 188 Wash. 72, 76, 61 P.2d 993 (1936) funeral expenses reported for a married decedent must be halved. Administration expenses are not a community debt and are reported at 100%.

(B) Example. John, a married man, died in 2005 with an estate valued at $2.5 million. On Schedule J of the federal estate tax return listed following as expenses:

The funeral expenses, as a community debt, were properly reported at 50% and the other administration expenses were properly reported at 100%.

(ii) Mortgages and liens on real property. Real property listed on Schedule A should be reported at its fair market value without deduction of mortgages or liens on the property. Mortgages and liens are reported and deducted using Schedule K.

(iii) Washington qualified terminable interest property (QTIP) election.

(A) A personal representative may choose to make a larger or smaller percentage or fractional QTIP election on the Washington return than taken on the federal return in order to reduce Washington estate liability while making full use of the federal unified credit.

(B) Section 2056 (b)(7) of the ((IRC)) Internal Revenue Code states that a QTIP election is irrevocable once made. ((Section 2044 states that the value of any property for which a deduction was allowed under section 2056 (b)(7) must be included in the gross estate of the recipient. Similarly,)) For the taxpayer that makes this election, any amount deducted by reason of section 2056 (b)(7) of the Internal Revenue Code is added to, and the value of the property for which a Washington election is made is deducted from, the Washington taxable estate. For the estate of the surviving spouse, the amount included in the estate's gross estate pursuant to section 2044 (a) and (b)(1)(A) of the Internal Revenue Code is deducted from, and the value of any property for which an election under this section was previously made is added to, the Washington taxable estate. A QTIP election made on the Washington return is irrevocable, and a surviving spouse who is the lifetime beneficiary of property for which a Washington QTIP election was made must include the value of the remaining property in his or her gross estate for Washington estate tax purposes. If the value of property for which a federal QTIP election was made is different, this value is not includible in the surviving spouse's gross estate for Washington estate tax purposes; instead, the value of property for which a Washington QTIP election was made is includible.

(C) The Washington QTIP election must adequately identify the assets, by schedule and item number, included as part of the election, either on the return or, if those assets have not been determined when the estate tax return is filed, on a statement to that effect, prepared when the assets are definitively identified. Identification of the assets is necessary when reviewing the surviving spouse's return, if a return is required to be filed. This statement may be filed with the department at that time or when the surviving spouse's estate tax return is filed.

(iv) Washington qualified domestic trust (QDOT) election.

(A) A deduction is allowed for property passing to a surviving spouse who is not a U.S. citizen in a qualified domestic trust (a "QDOT"). An executor may elect to treat a trust as a QDOT on the Washington estate tax return even though no QDOT election is made with respect to the trust on the federal return; and also may forgo making an election on the Washington estate tax return to treat a trust as a QDOT even though a QDOT election is made with respect to the trust on the federal return. An election to treat a trust as a QDOT may not be made with respect to a specific portion of an entire trust that otherwise would qualify for the marital deduction, but if the trust is actually severed pursuant to authority granted in the governing instrument or under local law prior to the due date for the election, a QDOT election may be made for any one or more of the severed trusts.

(B) A QDOT election may be made on the Washington estate tax return with respect to property passing to the surviving spouse in a QDOT, and also with respect to property passing to the surviving spouse if the requirements of ((IRC)) section 2056 (d)(2)(B) of the Internal Revenue Code are satisfied. Unless specifically stated otherwise herein, all provisions of sections 2056(d) and 2056A of the ((IRC)) Internal Revenue Code, and the federal regulations promulgated thereunder, are applicable to a Washington QDOT election. Section 2056A(d) of the ((IRC)) Internal Revenue Code states that a QDOT election is irrevocable once made. Similarly, a QDOT election made on the Washington estate tax return is irrevocable. For purposes of this subsection, a QDOT means, with respect to any decedent, a trust described in ((IRC)) section 2056A(a) of the Internal Revenue Code, provided, however, that if an election is made to treat a trust as a QDOT on the Washington estate tax return but no QDOT election is made with respect to the trust on the federal return:

(I) The trust must have at least one trustee that is an individual citizen of the United States resident in Washington state, or a corporation formed under the laws of the state of Washington, or a bank as defined in ((IRC)) section 581 of the Internal Revenue Code that is authorized to transact business in, and is transacting business in, the state of Washington (the trustee required under this subsection is referred to herein as the "Washington Trustee");

(II) The Washington Trustee must have the right to withhold from any distribution from the trust (other than a distribution of income) the Washington QDOT tax imposed on such distribution;

(III) The trust must be maintained and administered under the laws of the state of Washington; and

(IV) The trust must meet the additional requirements intended to ensure the collection of the Washington QDOT tax set forth in (c)(iv)(D) of this subsection.

(C) The QDOT election must adequately identify the assets, by schedule and item number, included as part of the election, either on the return, or, if those assets have not been determined when the estate tax return is filed, or a statement to that effect, prepared when the assets are definitively identified. This statement may be filed with the department at that time or when the first taxable event with respect to the trust is reported to the department.

(D) In order to qualify as a QDOT, the following requirements regarding collection of the Washington QDOT tax must be satisfied.

(I) If a QDOT election is made to treat a trust as a QDOT on both the federal and Washington estate tax returns, the Washington QDOT election will be valid so long as the trust satisfies the statutory requirements of Treas. Reg. Section 20.2056A-2(d).

(II) If an election is made to treat a trust as a QDOT only on the Washington estate tax return, the following rules apply:

If the fair market value of the trust assets exceeds $2 million as of the date of the decedent's death, or, if applicable, the alternate valuation date, the trust must comply with Treas. Reg. Section 20.2056A-2 (d)(1)(i), except that: If the bank trustee alternative is used, the bank must be a bank that is authorized to transact business in, and is transacting business in, the state of Washington, or a bond or an irrevocable letter of credit meeting the requirements of Treas. Reg. Section 20.2056A-2 (d)(1)(i)(B) or (C) must be furnished to the department.

If the fair market value of the trust assets is $2 million or less as of the date of the decedent's death, or, if applicable, the alternate valuation date, the trust must comply with Treas. Reg. Section 20.2056A-2 (d)(1)(ii), except that not more than 35 percent of the fair market value of the trust may be comprised of real estate located outside of the state of Washington.

A taxpayer may request approval of an alternate plan or arrangement to assure the collection of the Washington QDOT tax. If such plan or arrangement is approved by the department, such plan or arrangement will be deemed to meet the requirements of this (c)(iv)(D).

(E) The Washington estate tax will be imposed on:

(I) Any distribution before the date of the death of the surviving spouse from a QDOT (except those distributions excepted by ((IRC)) section 2056A (b)(3) of the Internal Revenue Code); and

(II) The value of the property remaining in the QDOT on the date of the death of the surviving spouse (or the spouse's deemed date of death under IRC section 2056A (b)(4)). The tax is computed using Table W. The tax is due on the date specified in IRC section 2056A (b)(5). The tax shall be reported to the department in a form containing the information that would be required to be included on federal Form 706-QDT with respect to the taxable event, and any other information requested by the department, and the computation of the Washington tax shall be made on a supplemental statement. If Form 706-QDT is required to be filed with the Internal Revenue Service with respect to a taxable event, a copy of such form shall be provided to the department. Neither the residence of the surviving spouse or other QDOT beneficiary nor the situs of the QDOT assets are relevant to the application of the Washington tax. In other words, if Washington state estate tax would have been imposed on property passing to a QDOT at the decedent's date of death but for the deduction allowed by this subsection (c)(iv)(E)(II), the Washington tax will apply to the QDOT at the time of a taxable event as set forth in this subsection (c)(iv)(E)(II) regardless of, for example, whether the distribution is made to a beneficiary who is not a resident of Washington, or whether the surviving spouse was a nonresident of Washington at the date of the surviving spouse's death.

(F) If the surviving spouse of the decedent becomes a citizen of the United States and complies with the requirements of section 2056A (b)(12) of the ((IRC)) Internal Revenue Code, then the Washington tax will not apply to: Any distribution before the date of the death of the surviving spouse from a QDOT; or the value of the property remaining in the QDOT on the date of the death of the surviving spouse (or the spouse's deemed date of death under ((IRC)) section 2056A (b)(4) of the Internal Revenue Code).

(d) Washington taxable estate. The estate tax is imposed on the "Washington taxable estate." The "Washington taxable estate" ((means the "federal taxable estate":

(vi) Less any amount included in the federal taxable estate pursuant to IRC § 2044 (inclusion of amounts for which a federal QTIP election was previously made) from a predeceased spouse that died on or after May 17, 2005)) is defined in WAC 458-57-105 (3)(t).

(e) Federal taxable estate. The "federal taxable estate" ((means the taxable estate as determined under chapter 11 of the IRC without regard to:

(ii) The deduction for state estate, inheritance, legacy, or succession taxes allowable under section 2058 of the IRC)) is defined in WAC 458-57-105 (3)(i).

(3) Calculation of Washington's estate tax.

(a) The tax is calculated by applying Table W to the Washington taxable estate.((See (d) of this subsection for the definition of "Washington taxable estate."))

Table W

(b) ((Examples.

Although Washington estate tax is not due, the estate is still required to file a Washington estate tax return along with a photocopy of the filed and signed federal return and all supporting documentation.)) Each year the department will publish each calendar year's "applicable exclusion amount." The "applicable exclusion amount" is adjusted annually and is defined in WAC 458-57-105 (3)(b).

(1) Introduction. This rule applies to deaths occurring on or after May 17, 2005, and discusses how to apportion the estate tax when there is out-of-state property included in the gross estate. The estate tax rule on apportionment of estate tax for deaths occurring on or before May 16, 2005, can be found in WAC 458-57-025.

(2) Calculation of apportioned tax. Apportionment of the tax is allowed for estate property located outside of Washington, even if the other state where the out-of-state property is located does not impose an estate tax. The amount of tax is determined by multiplying the preapportioned tax using Table W (((see WAC 458-57-115) multiplied)) by a fraction. The numerator of the fraction is the value of the property included in the decedent's gross estate that is located in Washington. The denominator of the fraction is the value of the decedent's gross estate. Intangible property is located in Washington if the decedent was a resident of this state at death. Property qualifying for the farm deduction is excluded from the numerator and denominator of the fraction. See WAC 458-57-155 ((()), Farm deduction(())), for additional information ((on the farm deduction.

The estate does not have to pay estate tax to the state of Arizona in order to reduce the tax owed to Washington. The estate tax due to Washington is $90,323)).

(((4))) (a) Example - Washington resident decedent. A widow dies during 2014 leaving a gross estate of $4.1 million. The decedent was a Washington resident at death. Decedent's primary residence is located in Seattle, Washington. The decedent also owned a second home in Arizona valued at $300,000 and unimproved real property in South Dakota valued at $750,000. The estate had $100,000 in expenses deductible for federal estate tax purposes. The applicable exclusion amount for 2014 after adjustment for inflation is $2,012,000.

(3) When is property located in Washington? ((A decedent's estate may have either real property or tangible personal property located in Washington)) The location of property owned by the decedent is determined at the time of death.

(a) All real property physically situated in this state, with the exception of federal trust lands, and all interests in such property, ((are deemed ")) is located in((")) Washington. ((Such)) Interests in real property include, but are not limited to:

(i) ((Leasehold interests;

(ii))) Mineral interests;

(iv) Trusts ()) (ii) Decedent's beneficial interest in real property held in trust((s of realty))); and

(((v))) (iii) Decedent's interest in jointly owned property (e.g., tenants in common, joint with right of survivorship).

(b) Tangible personal property of a ((nonresident)) decedent ((shall be deemed)) is located in Washington ((only)) if:

(i) At the time of death the property is situated in Washington; and

(ii) It is present for a purpose other than transiting the state.

(c) Intangible personal property of a decedent is located in Washington if the decedent was a resident of this state at death.

(d) Example. A nonresident decedent was a construction contractor doing business as a sole proprietor. The decedent was constructing a large building in Washington. At the time of death, any of the decedent's equipment that was located at the job site ((in Washington)), such as tools, earthmovers, bulldozers, trucks, etc., ((would be deemed)) is located in Washington for estate tax purposes((. Also, the decedent had negotiated and signed a purchase contract for speculative property in another part of Washington. For estate tax purposes, that real property should also be considered a part of the decedent's estate located in Washington)) because that property was present in the state for a purpose other than transiting the state.

(1) Introduction. This rule applies to deaths occurring on or after January 1, 2014, and is intended to determine if the estate is eligible for the qualified family-owned business interest deduction and to correctly calculate the deduction.

(2) Definitions. For purposes of this section, the following definitions apply:

(a) "Material participation" has the same meaning as provided in section 2032A (e)(6) of the Internal Revenue Code as amended or renumbered as of January 1, 2005. Under the federal tax provision, "material participation" generally means the individual is materially involved in making significant management decisions for the trade or business, but not necessarily the day-to-day operating decisions.

A decedent or a qualified heir will not be treated as materially participating in the family-owned business if:

(i) The income derived from carrying out the trade or business is from the management decisions of another individual or entity under an arrangement between the other individual or entity and the decedent or qualified heir.

(ii) The activities that constitute material participation of any agent of the decedent or qualified heir are not considered the activities of the decedent or qualified heir when determining their material participation in the family-owned business.

(iii) A trustee's activities managing a trust for the benefit of other individuals shall not be considered when determining whether any of the present interest beneficiaries of the trust materially participate in the family-owned business.

(b) "Member of the decedent's family" and "member of the family" have the same meaning as "member of the family" in RCW 83.100.046(10).

(c) "Qualified family-owned business interest" has the same meaning as provided in section 2057(e) of the Internal Revenue Code of 1986 as amended and renumbered as of December 31, 2003.

(d) "Qualified heir" has the same meaning as provided in section 2057(i) of the Internal Revenue Code of 1986 as amended and renumbered as of December 31, 2003.

(e) When a business interest is held in a trust, only the individuals with a present-beneficiary interest in the trust may qualify as a "qualified heir" or "member of decedent's family" under this rule.

(3) Criteria for claiming the deduction.

(a) For the purposes of determining the tax due under this chapter, a deduction is allowed for the value of the decedent's qualified family-owned business interests. The total deduction may not exceed two million five hundred thousand dollars.

(b) The deduction is available only if all the following criteria are met:

(i) The value of the decedent's qualified family-owned business interests must exceed fifty percent of the decedent's Washington taxable estate determined without regard to the deduction for the applicable exclusion amount provided in RCW 83.100.020 (1)(a);

(ii) During the eight-year period ending on the date of the decedent's death, there must have been periods aggregating five years or more during which:

(A) Such interests were owned by the decedent or a member of the decedent's family;

(B) There was material participation, within the meaning of section 2032A (e)(6) of the Internal Revenue Code, by the decedent or a member of the decedent's family in the operation of the trade or business to which such interests relate;

(iii) The qualified family-owned business interests are acquired by any qualified heir from, or passed to any qualified heir from, the decedent, within the meaning of RCW 83.100.046(2), and the decedent was at the time of his or her death a citizen or resident of the United States; and

(iv) The value of the decedent's qualified family-owned business interests is not more than six million dollars.

(4) Amounts deductible under this section.

(a) Only amounts included in the decedent's federal taxable estate may be deducted under this subsection.

(b) Amounts deductible under RCW 83.100.046 regarding property used for farming may not be deducted under this section.

(5) Additional estate tax imposed - Circumstances - Amount.

(a) If the qualified heir, within three years of decedent's death and prior to the qualified heir's death, meets one of the four criteria listed below, that qualified heir will be assessed additional estate tax.

(i) The material participation requirements described in section 2032A (c)(6)(b)(ii) of the Internal Revenue Code are not met with respect to the qualified family-owned business interest which was acquired or passed from the decedent;

(ii) The qualified heir disposes of any portion of a qualified family-owned business interest, other than by a disposition to a member of the qualified heir's family or a person with an ownership interest in the qualified family-owned business or through a qualified conservation contribution under section 170(h) of the Internal Revenue Code;

(iii) The qualified heir loses United States citizenship within the meaning of section 877 of the Internal Revenue Code or with respect to whom section 877 (e)(1) applies, and such heir does not comply with the requirements of section 877(g) of the Internal Revenue Code; or

(iv) The principal place of business of a trade or business of the qualified family-owned business interest ceases to be located in the United States.

(b) The amount of the additional estate tax imposed under this subsection if one of the four criteria in (a) of this subsection is met is equal to the amount of tax savings with respect to the qualified family-owned business interest acquired or passed from the decedent.

(c) Interest applies to the tax due under this subsection for the period beginning on the date that the estate tax liability was due under this chapter and ending on the date the additional estate tax due under this subsection is paid. Interest under this subsection must be computed as provided in RCW 83.100.070(2).

(d) The additional estate tax imposed by this subsection is due the day that is six months after any taxable event described in (a) of this subsection occurred and must be reported on a return as provided by the department.

(e) The qualified heir is personally liable for the additional tax imposed by this subsection unless he or she has furnished a bond in favor of the department for such amount and for such time as the department determines necessary to secure the payment of amounts due under this subsection. The qualified heir, on furnishing a bond satisfactory to the department, is discharged from personal liability for any additional estate tax and interest under this subsection and is entitled to a receipt or writing showing such discharge.

(f) Amounts due under this subsection attributable to any qualified family-owned business interest are secured by a lien in favor of the state on the property in respect to which such interest relates. The lien arises at the time the Washington return is filed on which a deduction under this section is taken and continues in effect until:

(i) The additional estate tax liability under this subsection has been satisfied or has become unenforceable by reason of lapse of time; or

(ii) The department is satisfied that no further tax liability will arise under this subsection.

(g) Security acceptable to the department may be substituted for the lien imposed by (f) of this subsection.

(h) For purposes of the assessment or correction of an assessment for additional estate taxes and interest imposed under this subsection, the limitations period in RCW 83.100.095 begins to run on the due date of the return required under (d) of this subsection.

(i) For purposes of this subsection, a qualified heir may not be treated as disposing of an interest described in section 2057 (e)(1)(A) of the Internal Revenue Code by reason of ceasing to be engaged in a trade or business so long as the property to which such interest relates is used in a trade or business by any member of the qualified heir's family.

(6) Information to be furnished to the department:

(a) The personal representative of the estate claiming the deduction is required to provide the names and contact information of all qualified heirs on forms prescribed by the department.

(b) Any qualified heir upon the department's request, must submit to the department on an ongoing basis such information as the department determines necessary or useful in determining whether the qualified heir is subject to the additional tax imposed in subsection (5) of this section. The department may not require such information more frequently than twice per year. The department may impose a penalty on a qualified heir who fails to provide the information requested within thirty days of the date the department's written request for the information was sent to the qualified heir. The amount of the penalty under this subsection is five hundred dollars and may be collected in the same manner as the tax imposed under subsection (5) of this section.