> ## Documentation Index
> Fetch the complete documentation index at: https://docs.bolta.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Retrieve Tax Invoice

> Retrieves the contents (including the NTS approval number) of an e-tax invoice whose status is `issuance complete`.

Usage examples: [B2B transactions](/en/docs/api-introduction/usecase-b2b) | [Recurring billing](/en/docs/api-introduction/usecase-recurring)




## OpenAPI

````yaml /openapi.en.yaml get /v1/taxInvoices/{issuanceKey}
openapi: 3.1.0
info:
  title: Bolta API
  description: >
    The Bolta e-tax invoice API. [API
    Overview](/en/docs/api-introduction/overview) | [Authentication
    guide](/en/docs/api-introduction/authentication) | [Use
    cases](/en/docs/api-introduction/usecase-b2b)
  version: 1.0.0
servers:
  - url: https://xapi.bolta.io
    description: Bolta API server
security:
  - basicAuth: []
tags:
  - name: Tax Invoice Issuance
    description: >
      Issue and amend e-tax invoices. [Calculating the issuance
      amount](/en/docs/api-introduction/issuance-guide) | [Amendment
      types](/en/docs/api-introduction/amendment-guide)
  - name: Tax Invoice Retrieval
    description: >
      Retrieve e-tax invoice results and request processing status, and download
      the PDF of an issued tax invoice. [Tax invoice PDF
      guide](/en/docs/api-introduction/tax-invoice-pdf)
  - name: Reverse Issuance
    description: >
      Request and manage reverse issuance of e-tax invoices. [Email-approval
      reverse issuance](/en/docs/api-introduction/usecase-reverse-email) |
      [Simple-approval reverse
      issuance](/en/docs/api-introduction/usecase-reverse-simple)
  - name: Cash Receipt
    description: >
      Issue, cancel, and check the status of cash receipts. [Cash receipt
      guide](/en/docs/api-introduction/cash-receipt-guide) | [Cash receipt
      webhooks](/en/docs/api-introduction/webhook-cash-receipt)
  - name: Business Registration Status
    description: >
      Check the registration status and tax type of a business registration
      number. Look up one number or up to 100 numbers at once. This API requires
      no issuer registration and no certificate. [Business registration status
      guide](/en/docs/api-introduction/business-registration-status)
  - name: Revenue and Expense
    description: >
      Retrieve the revenue and expense tax invoices of your own business in
      Bolta in the order they changed, and request a collection. Responses
      include documents issued through Bolta and documents collected from
      Hometax. You need a Standard plan or higher, and the calls deduct no
      points. Connect Hometax in the Bolta dashboard first. [Revenue and expense
      guide](/en/docs/api-introduction/revenue-expense)
  - name: Bank Account Transactions
    description: >
      Retrieve the bank accounts and transactions connected to your own business
      in Bolta, and request a sync. You need a Standard plan or higher, and the
      calls deduct no points. Connect bank accounts in the Bolta dashboard
      first. [Bank account transactions
      guide](/en/docs/api-introduction/bank-account-transactions)
  - name: Bank Account Holder
    description: >
      Look up account holder names with a bank code and an account number. One
      path takes a single account and the other takes up to 100 accounts at
      once. Each account that returns a holder name deducts 50 points. [Bank
      account holder guide](/en/docs/api-introduction/bank-account-holder)
  - name: Document Issuance
    description: >
      Issue National Tax Service certificates from Hometax or a certified copy
      of corporate registry, and download the original PDF. Hometax documents
      are issued only for the business that owns the API key, and you must
      register a joint certificate in the Bolta dashboard. A corporate registry
      is issued for the corporation in `corporationNumber` and needs no joint
      certificate. Supported corporation types are stock company, limited
      company, general partnership company, limited partnership company, limited
      liability company, incorporated association, incorporated foundation,
      medical corporation, cooperative (including social cooperative), and other
      corporate entity (such as a patent corporation). Each document deducts 500
      points for Hometax documents, 1,000 points for a corporate registry view
      copy, and 1,500 points for a submission copy. [Document issuance
      guide](/en/docs/api-introduction/document-issuance)
  - name: Issuer
    description: >
      Register and manage businesses that act as tax invoice issuers.
      Certificate requirements depend on the issuance type.
      [Glossary](/en/docs/api-introduction/glossary) | [Delegated
      issuance](/en/docs/api-introduction/usecase-delegated) | [Brokered Tax
      Invoice Issuance](/en/docs/api-introduction/usecase-brokered)
  - name: Certificate
    description: >
      Register and manage issuer certificates. [Certificate
      registration](/en/docs/api-introduction/certificate-registration)
paths:
  /v1/taxInvoices/{issuanceKey}:
    get:
      tags:
        - Tax Invoice Retrieval
      summary: Retrieve Tax Invoice
      description: >
        Retrieves the contents (including the NTS approval number) of an e-tax
        invoice whose status is `issuance complete`.


        Usage examples: [B2B
        transactions](/en/docs/api-introduction/usecase-b2b) | [Recurring
        billing](/en/docs/api-introduction/usecase-recurring)
      parameters:
        - name: issuanceKey
          in: path
          description: Issuance request identifier
          required: true
          schema:
            type: string
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                type: object
                properties:
                  issuanceKey:
                    type: string
                    description: Issuance identification key
                  ntsTransactionId:
                    title: NTS approval number
                    description: NTS approval number
                    type: string
                  issuedAt:
                    title: 'Issuance timestamp (format: ISO 8601)'
                    description: 'Issuance timestamp (format: ISO 8601)'
                    type: string
                  invoice:
                    type: object
                    properties:
                      date:
                        $ref: '#/components/schemas/DateString'
                        title: Write date
                        description: Write date
                      purpose:
                        $ref: '#/components/schemas/IssuancePurpose'
                        title: Issuance purpose
                        description: 'RECEIPT: receipt, CLAIM: claim'
                      supplier:
                        $ref: '#/components/schemas/TaxInvoiceSupplier'
                      supplied:
                        $ref: '#/components/schemas/TaxInvoiceRecipient'
                      trustee:
                        anyOf:
                          - $ref: '#/components/schemas/TaxInvoiceTrustee'
                          - type: 'null'
                      items:
                        type: array
                        items:
                          $ref: '#/components/schemas/TaxInvoiceItem'
                        minItems: 1
                        maxItems: 16
                      description:
                        type: string
                        title: Tax invoice note
                        description: Tax invoice note
                        minLength: 1
                        maxLength: 150
                    required:
                      - purpose
                      - supplied
                      - supplier
                      - trustee
                      - items
                      - date
                required:
                  - issuanceKey
                  - ntsTransactionId
                  - invoice
                  - issuedAt
          headers: {}
      deprecated: false
components:
  schemas:
    DateString:
      type: string
      format: date
      examples:
        - '2024-08-24'
    IssuancePurpose:
      type: string
      description: 'RECEIPT: receipt, CLAIM: claim'
      enum:
        - RECEIPT
        - CLAIM
    TaxInvoiceSupplier:
      type: object
      properties:
        identificationNumber:
          $ref: '#/components/schemas/BusinessRegistrationNumber'
          title: Business registration number
          description: Business registration number
        taxRegistrationId:
          title: Sub-business place code
          description: Sub-business place code
          anyOf:
            - $ref: '#/components/schemas/TaxRegistrationId'
            - type: 'null'
        organizationName:
          $ref: '#/components/schemas/OrganizationName'
          title: Organization name
          description: Organization name
        representativeName:
          $ref: '#/components/schemas/RepresentativeName'
          title: Representative name
          description: Representative name
        address:
          title: Address
          description: Address
          anyOf:
            - $ref: '#/components/schemas/Address'
            - type: 'null'
        businessItem:
          title: Business item
          description: Business item
          anyOf:
            - $ref: '#/components/schemas/BusinessItem'
            - type: 'null'
        businessType:
          title: Business type
          description: Business type
          anyOf:
            - $ref: '#/components/schemas/BusinessType'
            - type: 'null'
        manager:
          $ref: '#/components/schemas/TaxInvoiceManager'
          title: Manager
          description: Manager
      required:
        - identificationNumber
        - manager
        - organizationName
        - representativeName
    TaxInvoiceRecipient:
      type: object
      properties:
        identificationNumber:
          $ref: '#/components/schemas/RecipientIdentificationNumber'
          title: >-
            Identification number (business registration number, resident
            registration number, foreign registration number)
          description: >-
            Identification number (business registration number,
            resident-registration-number format, foreign-registration-number
            format)
        taxRegistrationId:
          title: Sub-business place code
          description: >-
            If the recipient's identification number is not a business
            registration number, pass `null` or omit the field.
          anyOf:
            - $ref: '#/components/schemas/TaxRegistrationId'
            - type: 'null'
        organizationName:
          $ref: '#/components/schemas/OrganizationName'
          title: Organization name
          description: Organization name
        representativeName:
          $ref: '#/components/schemas/RepresentativeName'
          title: Representative name
          description: Representative name
        address:
          title: Address
          description: Address
          anyOf:
            - $ref: '#/components/schemas/Address'
            - type: 'null'
        businessItem:
          title: Business item
          description: Business item
          anyOf:
            - $ref: '#/components/schemas/BusinessItem'
            - type: 'null'
        businessType:
          title: Business type
          description: Business type
          anyOf:
            - $ref: '#/components/schemas/BusinessType'
            - type: 'null'
        managers:
          type: array
          items:
            $ref: '#/components/schemas/TaxInvoiceManager'
          title: Manager
          description: Manager
          minItems: 1
          maxItems: 2
      required:
        - representativeName
        - managers
        - identificationNumber
        - organizationName
    TaxInvoiceTrustee:
      type: object
      description: Trustee information for brokered tax invoice issuance.
      properties:
        identificationNumber:
          $ref: '#/components/schemas/BusinessRegistrationNumber'
          title: Trustee business registration number
        taxRegistrationId:
          title: Sub-business place code
          anyOf:
            - $ref: '#/components/schemas/TaxRegistrationId'
            - type: 'null'
        organizationName:
          $ref: '#/components/schemas/OrganizationName'
          title: Organization name
        representativeName:
          $ref: '#/components/schemas/RepresentativeName'
          title: Representative name
        address:
          title: Address
          anyOf:
            - $ref: '#/components/schemas/Address'
            - type: 'null'
        businessItem:
          title: Business item
          anyOf:
            - $ref: '#/components/schemas/BusinessItem'
            - type: 'null'
        businessType:
          title: Business type
          anyOf:
            - $ref: '#/components/schemas/BusinessType'
            - type: 'null'
        manager:
          title: Trustee manager
          anyOf:
            - $ref: '#/components/schemas/TaxInvoiceTrusteeManager'
            - type: 'null'
      required:
        - identificationNumber
        - organizationName
        - representativeName
    TaxInvoiceItem:
      type: object
      properties:
        date:
          $ref: '#/components/schemas/DateString'
          title: Item supply date
          description: Item supply date
        name:
          type: string
          title: Item name
          description: Item name
          maxLength: 100
          minLength: 1
        unitPrice:
          type:
            - integer
            - 'null'
          title: Unit price
          description: Unit price
          minimum: 0
          exclusiveMinimum: 0
          examples:
            - 100
        quantity:
          type:
            - integer
            - 'null'
          title: Quantity
          description: Quantity
        supplyCost:
          type: integer
          title: Supply cost
          description: Supply cost
          minimum: 1
          examples:
            - 1000
        tax:
          type:
            - integer
            - 'null'
          title: Tax
          description: >-
            Tax. Pass a non-`null` value when `taxType` is `TAXABLE` and `0`
            when `ZERO_RATE`. When `TAX_FREE`, pass `null` or omit the field.
          minimum: 0
          examples:
            - 0
            - 100
        specification:
          type:
            - string
            - 'null'
          title: Specification
          description: Specification
          maxLength: 60
        description:
          type:
            - string
            - 'null'
          title: Item note
          description: Item note
          maxLength: 100
      required:
        - date
        - name
        - supplyCost
    BusinessRegistrationNumber:
      type: string
      title: Business registration number
      description: >-
        A checksum-valid 10-digit number without hyphens (-). Pattern:
        `^\d{10}$`. Example numbers in the docs are placeholders that fail the
        checksum. Set a real business registration number.
      pattern: ^\d{10}$
      examples:
        - '1234567890'
    TaxRegistrationId:
      type: string
      title: Sub-business place code
      description: '4 digits, excluding `0000`. Pattern: `^(?!0{4})\d{4}$`'
      pattern: ^(?!0{4})\d{4}$
      examples:
        - '0001'
        - '0002'
      minLength: 4
      maxLength: 4
    OrganizationName:
      type: string
      title: Organization name
      description: Organization name
      maxLength: 70
      minLength: 1
    RepresentativeName:
      type: string
      title: Representative name
      description: Representative name
      minLength: 1
      maxLength: 30
    Address:
      type: string
      title: Address
      description: Address
      maxLength: 150
      minLength: 1
    BusinessItem:
      type: string
      title: Business item
      description: Business item
      maxLength: 100
      examples:
        - Software development and supply
      minLength: 1
    BusinessType:
      type: string
      title: Business type
      description: Business type
      maxLength: 100
      examples:
        - Information and communications
      minLength: 1
    TaxInvoiceManager:
      type: object
      properties:
        email:
          $ref: '#/components/schemas/Email'
          title: Email
          description: Email
        name:
          type:
            - string
            - 'null'
          title: Name
          description: Name
          maxLength: 30
          minLength: 1
        telephone:
          type:
            - string
            - 'null'
          title: Mobile phone number
          description: >-
            Mobile phone number. If you provide it, Bolta sends a KakaoTalk
            notification (AlimTalk) to the manager. Pattern: `^010-\d{4}-\d{4}$`
          maxLength: 20
          examples:
            - 010-1234-5678
          pattern: ^010-\d{4}-\d{4}$
      required:
        - email
    RecipientIdentificationNumber:
      type: string
      title: Identification number
      description: >-
        10-digit business registration number, 13-digit
        resident-registration-number format, or 13-digit
        foreign-registration-number format. Digits without hyphens (-). The
        example numbers are placeholders. Set the recipient's real
        identification number.
      pattern: ^\d{10}(\d{3})?$
      examples:
        - '1234567890'
        - '9001011234567'
        - '9001015234567'
    TaxInvoiceTrusteeManager:
      type: object
      description: Set at least one of `email`, `name`, or `telephone`.
      properties:
        email:
          anyOf:
            - $ref: '#/components/schemas/Email'
            - type: 'null'
        name:
          type:
            - string
            - 'null'
          maxLength: 30
          minLength: 1
        telephone:
          type:
            - string
            - 'null'
          maxLength: 20
          pattern: ^010-\d{4}-\d{4}$
      anyOf:
        - properties:
            email:
              $ref: '#/components/schemas/Email'
          required:
            - email
        - properties:
            name:
              type: string
              minLength: 1
              maxLength: 30
          required:
            - name
        - properties:
            telephone:
              type: string
              pattern: ^010-\d{4}-\d{4}$
              maxLength: 20
          required:
            - telephone
    Email:
      type: string
      title: Email
      description: >-
        Pattern:
        `^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$`
      format: email
      pattern: ^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$
      maxLength: 40
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: >-
        Append a colon to your API key, Base64-encode it, and put it in the
        header. Enter the API key as the username and leave the password empty.

````