South Korean VAT invoices need exact tax fields and timing. Everhour keeps billable work organized before invoicing begins.
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An email invoice for South Korea should give the buyer a clear subject line, a complete attached invoice, and short payment instructions in the message body. The attached invoice matters most. South Korea uses VAT for taxable supplies, so a tax invoice should identify VAT rather than GST or American sales tax, and the document should keep the supply value separate from the VAT amount.
Use the email body to point the recipient to the attached invoice number, issue date, due date, amount due, and payment method. Keep the invoice itself as the formal record. Corporate businesses and prescribed individual businesses must issue electronic tax invoices, and issuance details generally must be transmitted to the National Tax Service by the day after issuance under decree rules.
A South Korean VAT tax invoice should state the supplier's business registration number and name or trade name, plus the buyer's business registration number. It should also show the value of supply, the VAT amount, and the date of preparation. Decree rules add transaction particulars such as item details and supply date, so the line items should describe the goods or services clearly.
The standard South Korean VAT rate is 10 percent of the taxable supply value unless a zero-rate or exemption rule applies. A clean service line can read: consulting services for May, supply value ₩1,000,000, VAT ₩100,000, total ₩1,100,000. Put payment terms beside the total or in the payment section. South Korean VAT invoice-content rules do not set a universal net-payment period, so ordinary due dates come from the contract.
The invoice email should make review easy for the finance team. Attach the invoice as a PDF, use one invoice per email when the buyer processes documents individually, and put the invoice number in the subject line. A vague subject such as "Payment request" slows matching because the recipient has to open the file before routing it.
The biggest tax mistake is treating an emailed PDF as a substitute for required electronic tax invoice issuance. If your business falls under the electronic tax invoice mandate, the email can deliver a copy to the buyer, but the required issuance and National Tax Service transmission still control the VAT record. The safest process separates buyer communication from statutory e-tax invoice reporting.
A one-off email invoice is enough for a small job when the taxable supply value, VAT amount, buyer details, and due date are already confirmed. It works best when you issue only a few invoices, the buyer does not require special line grouping, and you can manually confirm that no billable work was missed.
A managed workflow becomes necessary when billable and non-billable work affect the final amount. Everhour lets admins set project billing status, mark specific tasks as non-billable, apply custom task rates, and report billable time, non-billable time, billable amount, and cost. That structure keeps the invoice total tied to approved work instead of a manually rebuilt timesheet.
This content is for general information only, may not be fully up to date, and is provided without any warranty or liability.
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A South Korea invoice can be sent by email as a delivery method, but the tax record still has to meet VAT tax invoice rules. Corporate businesses and prescribed individual businesses must issue electronic tax invoices, and issuance details generally must be transmitted to the National Tax Service by the day after issuance. Email delivery does not replace that required e-tax invoice process.
The business registration number belongs on a Korean VAT tax invoice. The supplier's registration number and name or trade name must appear, and the buyer's business registration number must also be stated. This identifier supports VAT reporting and helps the buyer connect the invoice to input-tax credit records.
A South Korean VAT tax invoice should separately show the value of supply and the VAT amount. The standard VAT rate is 10 percent of the taxable supply value unless a zero-rate or exemption rule applies. Keeping those amounts separate gives the buyer the information needed for VAT review and input-tax credit support.
The ordinary payment due date comes from the contract, not from a universal net-payment period in South Korean VAT invoice-content rules. The invoice can still show a clear due date, bank details, and late-payment language. Commercial overdue claims may be affected by the Commercial Act default-interest framework.
The common mistake is sending only a PDF invoice email when the business is required to issue an electronic tax invoice. The buyer may receive the document, but the statutory electronic issuance and National Tax Service transmission can still be missing. Treat the email as delivery, and treat the e-tax invoice process as the VAT compliance record.
Everhour lets admins set project billing status, mark individual tasks as non-billable, use custom task rates, and set member-rate exceptions. Reports can show billable time, non-billable time, billable amount, and cost, so invoice review starts from classified work instead of unchecked time entries.
Track billable work before the invoice is drafted. Everhour connects billing status, non-billable task controls, task rates, and billable reports into cleaner client invoicing.
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