API Docs

Revised (tax) invoice

Where an error in the entries in an e-Tax invoice or e-Invoice is found or a ground prescribed by Presidential Decree arises in connection with the entries in an e-Tax invoice or e-Invoice issued, a new tax invoice (hereinafter referred to as "revised tax invoice") or a new invoice (hereinafter referred to as "revised invoice") in which such error, etc. is corrected may be issued, as prescribed by Presidential Decree. [Clause 5, Article 32 of VALUE-ADDED TAW LAW]

How to issue a revised invoice

'RegistIssue' API used for issuing the e-Tax invoice is also used to issue a revised (tax) invoice. For that, a modification code('modifyCode') and NTS confirm number of the original('orgNTSConfirmNum') must be added to an object('Taxinvoice') of revised (tax) invoice.

※ Code of modification (variable: modifyCode)

Code Reason Description
1 Correction of
errors		 Where any requisite entry item, etc. is wrongly stated in error
2 Change
in supply values		 Where a certain amount is added to, or subtracted from, the value of supply, due to the termination, etc. of contract
3 Return Where the original goods supplied are returned
4 Cancellation of contract Where no goods or services are supplied, due to cancellation of contract
5 Post opening
of local letter of credit		 Where a local letter of credit is opened or a written verification of purchase is issued within 25 days after the end of the taxable period in which the time of supply of goods or services falls
6 Duplicated issuance Where a duplicate e-Tax invoice is issued in error

Notice

  • To issue a revised (tax) invoice is only available when e-Tax invoice is in status of 'Succeed' and to retry the issuance of a general (tax) invoice is required when in status of 'Failed'.

1. Correction of errors modifyCode = 1

Term definition

  • Requisite entry item : Seller(Invoicer)'s Business Registration Number, Name of Company or Representative, Buyer(Invoicee)'s Business Registration Number, Date of Preparation, The value of supply and the amount of VAT.
  • Optional entry item : All except requisite entry item (e.g. Address, Business type, Business item, Email etc.)
In which case Where any requisite entry item or optional item is wrongly stated in error and where a tax invoice is issued with the wrongly applied tax rate.
How to write ※ A pair of revised invoices must be issued. ① To cancel : by adding a negative to the amount described in the original tax invoice.
② To modify : by writing the proper amount.
Date of preparation ① To cancel : Date of preparation described in the original tax invoice.
② To modify : Date of preparation described in the original tax invoice or The date you notice the error. ※ It may be caused a penalty taxes from NTS if the date of preparation is set in the future more than the date of
issuance of original.
Due Date 10th day of the month following the month in which you notice the error is included. ※ In case except in error, by the final return deadline for the taxable period
Notice Modification of taxation type It's not available to modify the taxation type from taxable/zero-rate to exempted and vice versa with this reason. For that case, reason 'duplicated issuance' is required.

2. Change in supply values modifyCode = 2

In which case Where a certain amount is added to, or subtracted from, the value of supply, due to the termination, etc. of contract.
How to write By writing the amount in positive as much as added or in negative as much as subtracted.
※ Supply values of the original + Supply values of the revised = Proper total value of supply
Date of preparation
 Date of occurrence of the grounds for addition or subtraction.
Due Date 10th day of the month following the month in which the date of occurrence is included.

3. Return modifyCode = 3

In which case Where the original goods supplied are returned.
How to write By writing the amount in negative as much as the goods supplied are turned.
Date of preparation
 The return date of goods. (Must affix the date of the original tax invoice was prepared in its reference column)
Due Date 10th day of the month following the month in which the return date of goods is included.
Notice If any SERVICE have been canceled, not goods, the reason 'cancellation of contract' is required.

4. Cancellation of contract modifyCode = 4

In which case Where no goods or services are supplied, due to cancellation of contract.
How to write By adding a negative to the amount described in the original tax invoice.
Date of preparation
 The date of contract cancellation. (Must affix the date the original tax invoice was prepared in its reference column)
Due Date 10th day of the month following the month in which the date of contract cancellation is included.
Notice If only PART of the contract has been canceled, NOT ALL, the reason 'changes in supply values' is required.

5. Post opening of local letter of credit modifyCode = 5

In which case Where a local letter of credit is opened or a written verification of purchase is issued within 25 days after the end of the taxable period in which the time of supply of goods or services falls.
How to write ※ A pair of revised invoices must be issued. ① To cancel (Taxable) : by writing the amount in negative as much as the local letter of credit is opened.
② To modify (Zero-rate) : by writing the amount in positive as much as the local letter of credit is opened.
Date of preparation
 It is same in both the cancellation one and the modification one
Date of preparation described in the original tax invoice (Must affix the opening date, etc. of the local letter of credit in its reference column)
Due Date 10th day of the month following the month in which the opening date is included. ※ Where a local letter of credit is opened or a written verification of purchase is issued AFTER the final return deadline for the taxable period, issuance is available within 25th day from the deadline.
Notice You can take this reason only in case that local credit or approval of purchase has been created actually and must attach the copy of local credit or the written verification of purchase to the e-Tax invoice. [Article 101 of Tax law enforcement ordinance]

6. Duplicated issuance modifyCode = 6

In which case Where a duplicate e-Tax invoice is issued in error.
How to write By adding a negative to the amount described in the original tax invoice
Date of preparation
 Date of preparation described in the original tax invoice
Due Date The date you notice the mistake
Notice If you take this reason without any previous transaction history with customer, may be asked an explanatory materials by the person in charge of NTS.

Penalty tax based on the date of preparation

  • In case of option 2. ‘change in supply values’ / 3. ‘return’ / 4. ‘cancellation of contract’
    NTS stipulate a date of preparation should be a day when the event actually occurred.
    Even so in case you set the date as the same with the original, be careful whether a due date for the date is over or not.
    Once the due date has been over, the revised invoice could be subject to a penalty tax from NTS.
  • In case of option 1. 'correction of errors’
    NTS stipulate a date of preparation for the revised invoice to modify could be the date you notice the error.
    Exceptionally, its due date doesn't affect to tax report(including penalty tax). It would be no matter once you issue WITHIN taxable period*. (*1st : From January 1 until June 30 / 2nd : From July 1 until December 31)
    But it could be subject to a penalty tax when the date of preparation is set in the future more than the date of issuance of original.

Business Contact

For more help with POPBiLL, try these resources :

T. +82 70-7998-7117E. global@linkhubcorp.com

Inquiry about service