OPINION
delivered the opinion of the court,
This appeal involves a dispute between a commercial bank and the Tennessee Department of Revenue regarding the bank’s claim for a refund of the sales taxes paid in connection with defaulted retail installment sales contracts purchased from various automobile dealers. After the Department denied its refund claim, the bank sued the Commissioner of Revenue in the Chancery Court for Davidson County seeking a refund. Both parties eventually sought a summary judgment. The trial court granted the Commissioner’s motion for summary judgment after concluding that it did not have jurisdiction to consider the bank’s claim. Alternatively, the trial court held that the bank was not entitled to the requested refund because it was not the dealer who originally remitted the sales tax to the Department. We have determined that the trial court erred by determining that it lacked jurisdiction to consider the bank’s refund claim. However, we have also determined that the trial court correctly concluded that the bank was not entitled to the requested refund because it was not the dealer who remitted the sales tax at issue.
SunTrust Bank, Nashville, N.A., formerly known as Third National Bank, is a commercial bank doing business in Tennessee. It has entered into agreements with numerous automobile dealers to provide financing for the dealers’ customers who desire to purchase a new automobile on credit. These arrangements work as follows. At the time of the sale of an automobile, the purchaser enters into a retail installment sales contract with the automobile dealer giving the dealer a security interest in the automobile. The amount financed by the retail installment sales contract includes (1) the portion of the purchase price not paid by the purchaser at the time of delivery, (2) the dealer’s miscellaneous fees and charges, and (3) the full amount of the sales tax due on the sale of the automobile.
Thereafter, the automobile dealer sells the retail installment sales contract to Sun-Trust at a discount. The dealer also assigns to SunTrust all its right, title, and interest in the retail installment sales contract. As a result of this assignment, Sun-Trust becomes entitled to any and all payments from the purchaser and succeeds to all the rights and interests of the automobile dealer. When SunTrust receives the retail installment sales contract, it pays *220 the dealer the agreed upon amount, which includes the full amount of the sales tax due on the sale of the automobile. Upon receiving these funds, the automobile dealer remits the sales tax due to the Tennessee Department of Revenue.
This arrangement works well as long as the purchaser continues making the payments required by the retail installment sales contract. However, a portion of new car purchasers eventually default on their contractual obligations. SunTrust bears the risk of loss in this circumstance because it purchases the retail installment sales contracts without recourse. Accordingly, when a purchaser defaults on a retail installment sales contract, SunTrust must repossess and dispose of the automobile, usually at a loss. It later charges off each of these losses for federal income tax purposes.
During the period covered by the bank’s Tennessee sales and use tax returns filed in calendar year 1991, over 450 retail installment sales contracts purchased by SunTrust went into default. For each of these contracts, SunTrust wrote off the outstanding portion of the indebtedness as an uncollectible bad debt. The total amount of the write-offs during the period at issue was nearly $2,000,000. In December 1994, SunTrust filed a claim with the Department of Revenue seeking a $105,356.66 refund representing the amount of the sales tax attributable to the defaulted installment sales contracts. 1 The Department denied the claim in February 1995 based on Tenn.Comp.R. & Regs. r. 1320-5-1-52(3) (1990) which stated that banks purchasing retail installment sales contracts without recourse are not entitled to a sales tax refund.
Believing that it was entitled to the requested refund, SunTrust filed suit against the Commissioner of Revenue in the Chancery Court for Davidson County. Both parties eventually agreed that the material facts were undisputed and filed motions for summary judgment. In an order entered on July 31, 1997, the trial court held that it did not have jurisdiction to consider SunTrust’s refund claim because SunTrust had not initially remitted the sales tax to the State. In an alternative ruling, the trial court concluded that, even if it had jurisdiction over SunTrust’s claim, Sun-Trust was not entitled to a refund because it was “not the dealer who paid the taxes at issue in this dispute, which is an explicit condition of relief under Tenn.Code Ann. § 67-6-507(e).” SunTrust has appealed.
I.
The Justiciability of SunTRUst’s Refund Claim
The threshold issue in this case involves the trial court’s subject matter jurisdiction over SunTrust’s claim. The Commissioner argued, and the trial court apparently *221 agreed, that the trial court lacked jurisdiction over SunTrust’s complaint seeking a tax refund under Tenn.Code Ann. § 67-1-1802(c)(1) (Supp.2000) because SunTrust was not a “taxpayer” for jurisdictional purposes. This argument unnecessarily scrambles two distinct concepts — subject matter jurisdiction and standing. We have concluded that the trial court clearly had subject matter jurisdiction over SunTrust’s refund claim and that SunTrust also had standing to assert it.
A.
The Trial Court’s Subject Matter Jurisdiction
As we have repeatedly said, the concept of subject matter jurisdiction implicates a court’s authority to hear and decide a particular type of case.
Meighan v. U.S. Sprint Communications Co.,
A court’s subject matter jurisdiction depends on the nature of the cause of action and the relief sought.
Landers v. Jones,
No Tennessee court has subject matter jurisdiction to entertain a suit against the State unless the State has consented to be sued.
Shell v. State,
TenmCode Ann. § 67-1-1802(c)(l)specifieally allows taxpayers whose claim for a tax refund has been denied to file suit against the Commissioner within six months after the denial of the claim. These suits must be filed in the “appropriate chancery court of this state.” For" the purposes of the statute, a chancery court is “appropriate” if it meets the venue provisions in TenmCode Ann. § 67-l-1803(a) (1998) which requires that suits against the Commissioner be filed either (1) in the Chancery Court for Davidson County, (2) in the chancery court in the county of the taxpayer’s domicile, or (3) in the chancery court of the county where the taxpayer’s principal place of business is located. The designation of the Chancery Court for Davidson County as a proper forum for resolving disputes between taxpayers and the Commissioner vests the Chancery Courts for Davidson County *222 •with the adjudicatory power, i.e., subject matter jurisdiction, to determine controversies such as the present one. Accordingly, the trial court’s conclusion that it lacked jurisdiction over SunTrust’s refund claim is incorrect.
B.
SuntRust’s Standing to Seek a Sales Tax Refund
In contrast to subject matter jurisdiction, standing is a judge-made doctrine used to determine whether a particular plaintiff is entitled to judicial relief.
Knierim v. Leatherwood,
The basis for SunTrust’s standing in this case begins to emerge when we consider two elementary points of law. The first point is that a potential tax refund claim is a chose in action.
See generally Cullen v. Bragg,
SunTrust’s complaint asserts that, for the purpose of the refund statute, its legal status should be deemed to be the same as a “dealer who has paid the tax imposed by this chapter.” This assertion differentiates SunTrust from the purchasers of tangible personal property who unsuccessfully sought sales tax refunds in
Beare Co. v. Olsen,
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The focus of a standing analysis is not on the merits of the plaintiffs case.
Metropolitan Air Research Testing Auth. v. Metropolitan Gov’t of Nashville,
II.
SunTrust’s Refund Claim
SunTrust’s claim for a refund under Tenn.Code Ann. § 67-6-507(e)(l) presents a question of first impression regarding Tennessee’s sales tax law. We are called upon to determine whether the purchaser of a retail installment sales contract from a dealer who actually remitted the sales tax resulting from the sale of tangible personal property is entitled to the same “bad debt” sales tax credit that the dealer itself would have been entitled to had it not assigned its rights. Arriving at the answer is essentially an exercise in statutory construction because SunTrust’s rights, if any, must be found in Tenn.Code Ann. § 67-6-507(e)(1) and other relevant portions of the Retailers’ Sales Tax Act.
A.
There is no common-law or equitable cause of action to recover taxes voluntarily paid in error.
City of Birmingham v. Piggly Wiggly Alabama Distrib. Co.,
In this case, SunTrust seeks to take advantage of the sales tax credit allowed by Tenn.Code Ann. § 67-6-507(e)(1). Thus, our task is to determine whether the General Assembly enacted the statute to enable entities like SunTrust to
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claim a credit or a refund. The sole purpose of statutory construction is to ascertain and then to give effect to the General Assembly’s purpose as reflected in the statute’s language.
Lavin v. Jordon,
A court’s construction of a statute will more likely hew to the General Assembly’s expressed intent if the court approaches the statutory text believing that the General Assembly chose its words deliberately.
Tidwell v. Servomation-Willoughby Co.,
In addition to these general principles of statutory construction, we must also consider the rules of construction specifically applicable to tax statutes. Statutes imposing a tax should be construed strictly against the government.
Steele v. Industrial Dev. Bd.,
B.
SunTrust, like others seeking a tax refund or credit, has the burden of demonstrating that it is entitled to the relief it seeks.
AFG Indus., Inc. v. Cardwell,
Tenn.Code Ann. § 67-6-507(e)(l), which was enacted over the Governor’s *225 veto in 1974, 3 provides that:
A dealer who has paid the tax imposed by this chapter on any sale as defined in § 67-6-102 may take credit in any return filed under the provisions of this chapter for the tax paid by the dealer on the unpaid balance due on accounts which, during the period covered by the current return, have been found to be worthless and are actually charged off for federal income tax purposes; provided, that if any accounts so charged off are thereafter in whole or in part paid to the dealer, the amounts so paid shall be included in the first return filed after such collection and the tax paid accordingly.
By the statute’s plain terms, the sales tax credit is available only to the “dealer who has paid the tax imposed by this chapter.” This language is unambiguous and cannot reasonably be construed to include the assignees of dealers who have paid the sales tax.
Two other jurisdictions, Nevada and Washington, have construed their bad debt sales tax credit statutes to permit the as-signee of the automobile dealer to receive a credit or refund when the purchaser subsequently defaults on the retail installment contract. However, in both jurisdictions, the statutory definitions of “dealer” or “retailer” and “person” were broad enough to include an assignee of a dealer or retailer.
Puget Sound Nat’l Bank v. Department of Revenue,
Our interpretation of the clear language in Tenn.Code Ann. § 67-6-507(e)(1) is buttressed by the Department’s long-standing interpretation of the statute. This interpretation is reflected in a regulation enacted twenty-six years ago. Approximately one month after the statute’s effective date, the Department promulgated Tenn.Comp.R. & Regs. r. 1320-5 — 1—.52(3) 4 providing that:
A bank or other financial institution purchasing contracts “without recourse” from dealers selling tangible personal property may not claim any deduction or credit for any unpaid balances remaining due on any property which has been sold by the other dealer on a security agreement or other title retained instrument, and later repossessed, or which resulted from any other action to enforce the lien.
Despite SunTrust’s assertions to the contrary, we do not view this rule as inconsistent with the plain meaning of TenmCode Ann. § 67-6-507(e)(l). In fact, we find that the rule is based on an entirely rea
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sonable interpretation of the statute. We will, therefore, give great weight to the Department’s interpretation reflected in the rule because, at least as far as this record shows, this interpretation has been consistently administered by the Department without challenge over a long period of time.
Covington Pike Toyota, Inc. v. Cardwell,
C.
SunTrust has not, and indeed cannot, cast itself as a “dealer who has paid the tax imposed by this chapter” because neither the facts nor the language of Tenn. Code Ann. § 67 — 6—507(e)(1) support this claim. However, it asserts that it should be allowed to pursue the claims that these dealers could have asserted because the dealers have assigned SunTrust all their right, title, and interest in the retail installment sales contracts. This assignment argument is not without some weight and has been adopted in at least two other jurisdictions. However, we do not find it persuasive here because of the plain language of TenmCode Ann. § 67 — 6—507(e)(1) and Tenn.Comp.R. & Regs. r. 1320-5-1-.52(3).
The parties do not dispute that Sun-Trust purchased the retail installment sales contracts that eventually defaulted or that SunTrust took a broad assignment of all the automobile dealers’ right, title, and interest in these contracts. The operative terms of the assignment are as follows:
FOR VALUE RECEIVED, we, the undersigned Seller, hereby sell, assign, and transfer unto Third National Bank (herein called “Assignee”) all moneys due and to become due under, and all our right, title, interest and remedies (but not our obligations) in and under the within contract and the Goods therein described, and we authorize Assignee to do every act and thing in our name or otherwise which Assignee may deem advisable to enforce the terms of said contract.
While the assignment transfers all the dealer’s “right, title, interest and remedies” under the retail installment sales contract, it authorizes the bank “to do every act and thing ... [the bank] may deem advisable to enforce the terms of said contract.” Nowhere in the assignment does the dealer explicitly assign to the bank its right to obtain a bad debt sales tax credit under Tenn.Code Ann. § 67-6-507(e)(l).
One of the general principles of the law of assignments is that the as-signee “steps into the shoes of the assign- or” with regard to the matters covered by the assignment.
Aetna Cas. & Sur. Co. v. Tennessee Farmers Mut. Ins. Co.,
We understand and approve of the policy favoring the free assignability of commercial instruments. However, in this context, the traditional principles of statutory construction applicable to statutes granting tax credits, deductions, or exemptions, should prevail over general assign
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ment principles.
Department of Revenue v. Bank of America,
In summary, we find that the plain, unambiguous language of Tenn.Code Ann. § 67-6-507(e)(l) provides that only automobile dealers who have paid the sales tax arising from the sale of a new car may claim the bad debt sales tax credit. We also find that Tenn.Comp.R. & Regs. r. 1320-5-l-.52(3) is consistent with Tenn. Code Ann. § 67-6-507(e)(l). Accordingly, we conclude that SunTrust has failed to carry its burden of demonstrating that it is clearly entitled to the relief it seeks and, therefore, that the trial court’s alternative conclusion that SunTrust is not entitled to a refund under Tenn.Code Ann. § 67-6-507(e)(1) is correct.
III.
We reverse the portion of the order dismissing SunTrust’s complaint on jurisdictional grounds and affirm the alternative conclusion that SunTrust is not entitled to a refund or credit under Tenn.Code Ann. § 67-6-5Q7(e)(l). The case is remanded to the trial court for whatever further proceedings consistent with this opinion may be required. We tax the costs of this appeal to SunTrust Bank and its surety for which execution, if necessary, may issue.
Notes
. Tenn.Code Ann. § 67-6-507(e)(3) (1998) authorizes a "credit” against sales and use tax that can be claimed on a return filed for the period when a worthless account is charged off for federal income tax purposes. Sun-Trust failed to claim the credits in this case when they were originally available, but its error is not fatal. Tenn.Code Ann. § 67-1-1802(a)(1) (Supp.2000) provides, in part, that the Commissioner of Revenue, with the approval of the Attorney General and Reporter, is empowered and directed to refund to taxpayers all taxes collected or administered by the Commissioner that are, on the date of payment, paid in error or paid against any statute, rule, or regulation. The thrust of Tenn.Code Ann. § 67-1-1802 is that a taxpayer who initially fails to claim a credit may later, within the time period allowed by statute, claim a refund of the overpayment resulting from its failure to initially claim the credit. In this case, the Commissioner does not take issue with the difference between a credit and a refund and instead asserts that the bank qualifies for neither.
. Arthur H. Northrup, The Measure of Sales Taxes, 9 Vand.L.Rev. 237, 254-56 (1956) (pointing out that the legislature must decide whether to provide for a credit or refund for bad debts, and if it decides to provide for a credit or refund, it also has the prerogative to decide how much the credit or refund will be and under what circumstances the credit or refund will be permitted).
. Act of May 1, 1973, ch. 798, 1974 Tenn.Pub. Acts 1370. The General Assembly enacted Tenn.Code Ann. § 67-6-507(e)(2), (3) in 1985 [Act of May 21, 1985, ch. 423, 1985 Tenn.Pub. Acts 857] and Tenn.Code Ann. § 67-6-507(e)(4) in 1991 [Act of Mar. 11, 1991, ch. 38, § 1, 1991 Tenn.Pub.Acts 46], These latter three subsections do not figure into this opinion.
. This provision is now found at Tenn. Comp.R. & Regs. r. 1320-5-l-.52(2) (2000).
. The General Assembly is presumed to know the existing state of the law on the subject under consideration when it enacts legislation.
Lavin v. Jordon,
