Calculating the Issuance Amount

How amounts are calculated

The issuance amount of a tax invoice is the sum of the amounts of all items. An issuance request also carries the tax type (taxType). The tax type determines how the per-item tax (items[].tax) is entered.

Tax type (`taxType`)	Meaning	Item tax (`items[].tax`)
`TAXABLE`	Taxable	Pass a non-`null` value
`ZERO_RATE`	Zero-rate	Pass `0` for every item
`TAX_FREE`	Tax-exemption (tax-exemption invoice)	Pass `null` for every item

Within a single issuance request, the tax for every item must be entered the same way. If you send null for only some items, or send a non-zero tax for a zero-rate invoice, the request is rejected.

Input examples by tax type

{
  "taxType": "TAXABLE",
  "items": [{ "supplyCost": 10000, "tax": 1000 }]
}

{
  "taxType": "ZERO_RATE",
  "items": [{ "supplyCost": 10000, "tax": 0 }]
}

{
  "taxType": "TAX_FREE",
  "items": [{ "supplyCost": 10000, "tax": null }]
}

Calculation example

The following is an example of issuing a total of KRW 220,000. Tax invoice total

Issuance amount	Supply cost	Tax
220,000	200,000	20,000

Per-item breakdown

Item name	Unit price (unitPrice)	Quantity (quantity)	Supply cost (supplyCost)	Tax (tax)	Amount (supplyCost + tax)
First item	5,000	10	50,000	5,000	55,000
Second item	3,000	50	150,000	15,000	165,000

Input limits

Values that do not conform to the NTS XML transmission specification are rejected at the issuance request stage.

Field	Limit
Supplier/recipient organization name (`organizationName`)	Up to 70 characters
Representative name (`representativeName`), manager name (`manager.name`)	Up to 30 characters
Business type (`businessType`), business item (`businessItem`)	Up to 100 characters
Manager email (`manager.email`)	Up to 40 characters
Manager mobile phone number (`manager.telephone`)	Up to 20 characters, in `010-1234-5678` format
Address (`address`), tax invoice remarks (`description`)	Up to 150 characters
Item name (`items[].name`), item remarks (`items[].description`)	Up to 100 characters
Item specification (`items[].specification`)	Up to 60 characters
Number of items (`items`)	Between 1 and 16

If you enter the recipient manager’s mobile phone number, a KakaoTalk notification (AlimTalk) is sent to announce receipt of the tax invoice.

API Introduction

API Guides

Use Cases

SDK / No-code

How amounts are calculated

Input examples by tax type

Calculation example

Input limits

​How amounts are calculated

​Input examples by tax type

​Calculation example

​Input limits

How amounts are calculated

Input examples by tax type

Calculation example

Input limits