Compliance
Compliance Spotlight: Cash Receipts & Electronic Tax Invoices in Korea’s Latest Reforms
Recent Korean laws impose tougher rules on cash receipt refusals and mandate electronic invoices to improve transparency and reduce evasion.
By NomadicTax Research Team • 5-8 min read • August 27, 2026
## Recent Reforms Affecting Businesses & Consumers
In the past month, Korea’s National Tax Service (NTS) announced in its “Major Tax Law Amendments” several **important compliance changes** regarding **electronic tax (or ordinary) invoices** and **cash receipts**: refusals of cash receipt requests, mis-issuance, and immediate electronic transmission of tax invoices. ([nts.go.kr](https://www.nts.go.kr/nts/cm/cntnts/cntntsView.do?cntntsId=7786&mi=2466&utm_source=openai))
## Key Changes
### Electronic (Tax) Invoice System
- Businesses over certain thresholds (corporates, high-volume traders) must issue invoices **electronically** instead of paper for VAT-exempt transactions, using certified ERP/ASP systems or NTS’s own platform. ([nts.go.kr](https://www.nts.go.kr/nts/cm/cntnts/cntntsView.do?cntntsId=7786&mi=2466&utm_source=openai))
- Such invoices must be **immediately transmitted** to the NTS as XML files. Submissions via email or other electronic methods are defined in law. ([nts.go.kr](https://www.nts.go.kr/nts/cm/cntnts/cntntsView.do?cntntsId=7786&mi=2466&utm_source=openai))
### Cash Receipt Refusal Reporting & Rewards
- Merchants in industries listed under **“consumer-facing industries (소비자 상대 업종)”** who refuse to issue a cash receipt upon customer request—or issue one with false value—or cancel receipts wrongly can be reported by consumers. ([nts.go.kr](https://www.nts.go.kr/nts/cm/cntnts/cntntsView.do?cntntsId=7797&mi=2466&utm_source=openai))
- There’s now a **reward system** for consumers who file such reports:
| Amount of transaction refused/misreported | Reward |
|--------------------------------------------|--------|
| ₩5,000-₩50,000 | ₩10,000 |
| ₩50,000-₩1.25 million | 20% of refused amount |
| Over ₩1.25 million | ₩250,000 fixed reward | ([nts.go.kr](https://www.nts.go.kr/nts/cm/cntnts/cntntsView.do?cntntsId=7797&mi=2466&utm_source=openai))
- Annual cap: ₩1 million per same individual per year; amounts under ₩1,000 are omitted. ([nts.go.kr](https://www.nts.go.kr/nts/cm/cntnts/cntntsView.do?cntntsId=7797&mi=2466&utm_source=openai))
## Who’s Affected?
- **Large corporations** and **medium-to-large businesses** with significant VAT-exempt trade must adapt to electronic invoice systems if not already done.
- **Small vendors and cash businesses** face heightened compliance risk; consumers can now officially report misbehavior, with rewards attached.
- **Tax agents and compliance officers** will need to update internal controls to ensure receipts/invoices are issued properly and transmitted securely and timely.
## Steps to Comply & Reduce Risk
1. **Review your current invoicing tools**: Are paper invoices still used for anything? If yes, switch to ERP, ASP, or NTS’s electronic system.
2. **Train staff**: Make sure all employees understand when and how to give electronic invoices or cash receipts—even for modest transactions.
3. **Monitor refusals & customer requests**: Put in place standard operating procedures for handling these requests properly; document them.
4. **Set up data transmission**: Electronic invoices must be sent by **next day** to NTS in XML format. Delay or mis-transmission can lead to penalties. ([nts.go.kr](https://www.nts.go.kr/nts/cm/cntnts/cntntsView.do?cntntsId=7786&mi=2466&utm_source=openai))
5. **Consumer-facing** industries should especially audit internal controls: customers may file reports and compliance failures are public, rewarded.
## Example
A café (consumer-facing business), on a day someone orders ₩60,000 worth of service in cash but the cashier says they can’t issue a cash receipt. That person can report this merchant within 5 years, and would receive **20% of ₩60,000**, i.e. ₩12,000. If multiple such instances accumulate, vendor could face audits, penalties, public reputation risk.
## Why This Matters
These reforms are **medium to high impact** for many businesses. They shift burden of proof toward merchants to show they properly issued receipts/invoices. They enhance transparency and align with global practices to reduce VAT fraud. For businesses with diverse sales channels (online/offline, cash/card), this is a time to audit, adapt, and ensure compliance.