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SmartBill

Paid AndroidAPIiPhoneSelf-hostedWeb

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SmartBill's own site

What SmartBill is

SmartBill is a web-based electronic tax invoice service for businesses, with tools described as helping manage tax risk. It supports creating, issuing, viewing, storing, and sending electronic tax invoices to South Korea’s National Tax Service. Its developer center documents APIs for single or bulk issuance, invoice viewing, editing, deletion, and tax-authority transmission. The SmartBill mobile app supports invoice issuance, issued and received history checks, and sales and purchase statistics on Android and iOS. Listed platforms also include web, API, and self-hosted deployment. SmartBill says communication data is encrypted with TLS and personal information is encrypted for storage. Customer support includes one-to-one inquiries, remote assistance, a resource library, and service manuals. Billing includes monthly postpaid use and prepaid bundles. Postpaid costs 11,000 KRW a month for 1–50 invoices, with each additional invoice charged at 220 KRW; unused monthly capacity does not carry over.

Who it suits

It suits businesses issuing Korean electronic tax invoices that need web, mobile, API, or self-hosted access. Developers can use the documented invoice and National Tax Service APIs.

What it does well

  • Creates, stores, and transmits electronic invoices
  • Single and bulk issuance APIs
  • Android and iOS invoice management
  • TLS and encrypted personal-information storage
  • Multiple billing models available

What to know first

  • No free plan
  • Postpaid unused counts do not carry over
  • Additional postpaid invoices cost 220 KRW each
  • Service is focused on Korean tax invoicing

Plans

PlanBilled and limitsPrice
전자세금계산서 후불형11,000원/월 for 1–50 invoices; 51건부터 1건당 220원 추가 청구 (부가세 포함) · 월 1~50건 포함 · 초과 건당 220원 · 사용량 없는 달 미청구 · 자동이체 설정 필요11,000 KRW a month
전자세금계산서 선불형 10건10건 11,000원 · 발행 1건당 1,100원 차감 · 충전 잔액 5년 후 소멸 · VAT 포함11,000 KRW, paid once
전자세금계산서 선불형 20건20건 22,000원 · 발행 1건당 1,100원 차감 · 충전 잔액 5년 후 소멸 · VAT 포함22,000 KRW, paid once
전자세금계산서 선불형 50건50건 55,000원 · 발행 1건당 1,100원 차감 · 충전 잔액 5년 후 소멸 · VAT 포함55,000 KRW, paid once
연동/구축형 전자세금계산서요청에 따라 맞춤형 견적 · 전자세금계산서 API 연동 또는 On-Premise 구축On request

As smartbill.co.kr lists them, read 9 Oct 2026. The maker's own page has the final word.

Verdict

SmartBill combines invoice workflows, mobile access, APIs, and stated encryption controls for Korean electronic tax invoicing. Review monthly or prepaid billing carefully, especially the non-carryover rule and extra postpaid charges.

Facts from SmartBill's own pages

고객 지원 채널
공식 사이트 고객센터에는 1:1 문의, 원격지원, 자료실, 서비스 매뉴얼이 안내되어 있다. · smartbill.co.kr, 9 Oct 2026
API
개발자센터는 전자세금계산서 단건·대량 발행, 조회·수정·삭제 및 국세청 전송 API를 안내한다. · developers.smartbill.co.kr, 9 Oct 2026
Headquarters
Seoul, South Korea · smartbill.co.kr, 28 Sept 2026

Where SmartBill stands on Freedom251

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