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OpenAccountants/Skills/Taiwan Business Tax (營業稅)

Taiwan Business Tax (營業稅)

Prepare, review, or classify transactions for a Taiwan Business Tax (營業稅) return, handle uniform invoice (統一發票) compliance, or advise on VAT registration and filing in Taiwan.

TaiwanTax year 2025· Last reviewed Apr 13, 2026

Key facts — Taiwan, 2025

FieldValue
CountryTaiwan (中華民國 / Republic of China)
Tax營業稅 (Yíngyèshuì — Business Tax / VAT)
CurrencyNTD (New Taiwan Dollar / 新台幣 NT$)
Tax yearCalendar year (1 Jan – 31 Dec)
Standard rate5%
Zero rate0% (exports, services to foreign businesses paid in foreign currency)
ExemptMedical, education, land sales, financial services (banking interest, insurance premiums), small businesses below threshold
Registration thresholdNTD 480,000/year (goods); NTD 240,000/year (services) for small business; above = mandatory general registration
Small business (小規模營業人)Monthly revenue < NTD 80,000 (goods) / NTD 40,000 (services) — special simplified tax
Tax authority財政部國稅局 (Ministry of Finance — National Tax Administration / NTA)
Return form401 (bi-monthly, general taxpayers); 403 (quarterly, small business)
Filing portaleTax (https://www.etax.nat.gov.tw)
Filing frequencyBi-monthly (每兩個月申報一次) for most; quarterly for small
Deadline15th of month following reporting period (e.g., Jan–Feb period → 15 March)
Uniform invoice (統一發票)Mandatory for B2B and B2C; government-issued invoice numbers
ContributorOpen Accountants Community
Validated byPending — requires sign-off by a Taiwan-licensed 會計師 (CPA)
Skill version2.0

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About

Use this skill whenever asked to prepare, review, or classify transactions for a Taiwan Business Tax (營業稅) return, handle uniform invoice (統一發票) compliance, or advise on VAT registration and filing in Taiwan. Trigger on phrases like "營業稅", "Taiwan business tax", "統一發票", "uniform invoice", "401 return", "403 return", "申報營業稅", or any Taiwan VAT/business tax request. ALWAYS read this skill before touching any Taiwan business tax work.

TaiwanTax year 2025

Full guide

Taiwan Business Tax (營業稅) Skill v2.0


Section 1 — Quick reference

FieldValue
CountryTaiwan (中華民國 / Republic of China)
Tax營業稅 (Yíngyèshuì — Business Tax / VAT)
CurrencyNTD (New Taiwan Dollar / 新台幣 NT$)
Tax yearCalendar year (1 Jan – 31 Dec)
Standard rate5%
Zero rate0% (exports, services to foreign businesses paid in foreign currency)
ExemptMedical, education, land sales, financial services (banking interest, insurance premiums), small businesses below threshold
Registration thresholdNTD 480,000/year (goods); NTD 240,000/year (services) for small business; above = mandatory general registration
Small business (小規模營業人)Monthly revenue < NTD 80,000 (goods) / NTD 40,000 (services) — special simplified tax
Tax authority財政部國稅局 (Ministry of Finance — National Tax Administration / NTA)
Return form401 (bi-monthly, general taxpayers); 403 (quarterly, small business)
Filing portaleTax (https://www.etax.nat.gov.tw)
Filing frequencyBi-monthly (每兩個月申報一次) for most; quarterly for small
Deadline15th of month following reporting period (e.g., Jan–Feb period → 15 March)
Uniform invoice (統一發票)Mandatory for B2B and B2C; government-issued invoice numbers
ContributorOpen Accountants Community
Validated byPending — requires sign-off by a Taiwan-licensed 會計師 (CPA)
Skill version2.0

Key 401 return boxes

BoxMeaning
401-1Sales amount — taxable at 5% (課稅銷售額)
401-2Output tax at 5% (銷項稅額)
401-3Zero-rated sales (零稅率銷售額)
401-4Exempt sales (免稅銷售額)
401-5Total input tax (進項稅額合計)
401-6Disallowed input tax (不得扣抵進項稅額)
401-7Net input tax (進項稅額 − 不得扣抵)
401-8Tax payable (應納稅額 = 401-2 − 401-7)
401-9Excess credit carried forward (留抵稅額)
401-10Net payable after prior credit

Conservative defaults

AmbiguityDefault
Unknown rate on a sale5%
Unknown counterparty countryDomestic Taiwan
Unknown B2B vs B2C for foreign customerB2C — charge 5%
Unknown business-use % (vehicle, phone)0% credit
Unknown invoice typeNo input credit until uniform invoice confirmed
Unknown whether exempt or taxable serviceTaxable at 5%
Unknown export documentationNot zero-rated — 5% default

Red flag thresholds

ThresholdValue
HIGH single transactionNTD 300,000
HIGH tax delta on single defaultNTD 15,000
MEDIUM counterparty concentration>40% of output or input
MEDIUM conservative default count>4 per period
LOW absolute net tax positionNTD 100,000

Section 2 — Required inputs and refusal catalogue

Required inputs

Minimum viable — bank statement for the bi-monthly period in CSV, PDF, or pasted text. Confirmation of taxpayer type (general 一般 or small business 小規模).

Recommended — uniform invoices (統一發票) for all sales, purchase invoices for all input credits claimed above NTD 10,000, business registration certificate (統一編號 8-digit business ID).

Ideal — complete invoice register, 進項憑證 (input vouchers), prior period return and credit carried forward (留抵稅額), export documentation.

Refusal if minimum missing — SOFT WARN. No bank statement = hard stop. "Input tax credits require uniform invoices (統一發票 or 電子發票). All credits are provisional pending invoice confirmation."

Refusal catalogue

R-TW-1 — Small business (小規模) with input credit claims. "Small businesses (小規模營業人) are taxed on a simplified basis and cannot claim input credits. They file quarterly using Form 403 and pay a deemed tax on purchases. This skill can compute the simplified tax but cannot process input credits for small businesses."

R-TW-2 — Special industry taxpayers. "Banks, insurance companies, and certain financial institutions have different business tax calculation methods. Out of scope."

R-TW-3 — Partial exemption proration. "If the business makes both taxable and exempt sales and cannot clearly allocate input tax, a proration (比例扣抵) is required. Out of scope without the annual ratio — escalate to a 會計師."

R-TW-4 — Cross-border electronic services (B2C). "Foreign businesses providing electronic services to Taiwan consumers (B2C) must register under the special e-services regime. Out of scope for domestic filing."

R-TW-5 — Land transactions. "Sales of land are exempt from business tax. If this forms a significant portion of transactions, proration rules apply — escalate."


Section 3 — Supplier pattern library

Match by case-insensitive substring on counterparty or reference. Most specific match wins. Fall through to Section 5 if no match.

3.1 Taiwanese banks — fees and charges (exempt / exclude)

PatternTreatmentNotes
中華郵政, CHUNGHWA POST BANKEXCLUDE (fee lines)Banking — exempt financial service
台灣銀行, BANK OF TAIWAN, BOTEXCLUDE (fee lines)Same
合作金庫, TAIWAN COOPERATIVE BANK, TCBEXCLUDE (fee lines)Same
第一銀行, FIRST COMMERCIAL BANKEXCLUDE (fee lines)Same
兆豐銀行, MEGA BANK, MEGA INTERNATIONALEXCLUDE (fee lines)Same
玉山銀行, E.SUN BANKEXCLUDE (fee lines)Same
國泰世華, CATHAY UNITED BANKEXCLUDE (fee lines)Same
富邦銀行, TAIPEI FUBON BANKEXCLUDE (fee lines)Same
永豐銀行, SINOPAC BANKEXCLUDE (fee lines)Same
中信銀行, CTBC BANK, 中國信託EXCLUDE (fee lines)Same
手續費, 帳管費, 匯費EXCLUDEBank fees — exempt
利息, 利息收入EXCLUDEInterest — exempt

3.2 Taiwanese government and statutory (exclude)

PatternTreatmentNotes
財政部, 國稅局, NTAEXCLUDETax payment — not a supply
營業稅, 綜所稅, 所得稅EXCLUDETax remittance
勞保, 健保, 勞工保險, 全民健康保險EXCLUDESocial insurance — out of scope
勞動部, 勞工局EXCLUDEGovernment authority fees
公路監理, 地方稅EXCLUDELicensing/local tax — not a supply
中華民國專利局, 智財局EXCLUDEGovernment IP fees

3.3 Taiwanese utilities (taxable at 5%)

PatternTreatmentRateNotes
台灣電力, TAIWAN POWER, TAIPOWERInput 5%5%Electricity — taxable
台灣自來水, TAIWAN WATERInput 5%5%Water — taxable
中華電信, CHUNGHWA TELECOM, CHTInput 5%5%Telecom/broadband — taxable
台灣大哥大, TAIWAN MOBILEInput 5%5%Mobile — taxable
遠傳電信, FAR EASTONEInput 5%5%Mobile — taxable
台灣之星, TAIWAN STAR (now TWM)Input 5%5%Mobile — taxable
台灣固網, TFIXInput 5%5%Fixed-line — taxable

3.4 Transport and logistics (taxable at 5%)

PatternTreatmentRateNotes
台灣高鐵, THSR, 高鐵Input 5%5%High-speed rail — taxable
台灣鐵路, TRA, 台鐵Input 5%5%Rail — taxable
台北捷運, TAIPEI MRT, 北捷Input 5%5%Metro — taxable
高雄捷運, KAOHSIUNG MRTInput 5%5%Metro — taxable
統聯客運, UBUSInput 5%5%Long-distance bus — taxable
中華航空, CHINA AIRLINES, CALCheck route0%/5%International 0%; domestic 5%
長榮航空, EVA AIRCheck route0%/5%Same
黑貓宅急便, YAMATO TAIWANInput 5%5%Domestic courier — taxable
新竹物流, HSINCHU TRANSPORTInput 5%5%Domestic freight — taxable
大榮貨運, GREAT WALL TRANSPORTInput 5%5%Freight — taxable
台灣宅配通, TAIWAN DELIVERYInput 5%5%Courier — taxable

3.5 Food and retail

PatternTreatmentRateNotes
7-ELEVEN TAIWAN, 統一超商Input 5%5%Retail — taxable (food included at 5%)
全家便利商店, FAMILY MART TAIWANInput 5%5%Same
萊爾富, HI-LIFEInput 5%5%Same
OK MARTInput 5%5%Same
全聯福利中心, PX MARTInput 5%5%Supermarket — taxable
大潤發, RT-MART TAIWANInput 5%5%Hypermarket — taxable
家樂福, CARREFOUR TAIWANInput 5%5%Hypermarket — taxable
愛買, JASON'SInput 5%5%Supermarket — taxable
餐廳, 飲食 (eat-in)Input 5%5%Restaurant meals — taxable (no exemption for food in Taiwan)

3.6 SaaS — local Taiwanese suppliers (5%)

PatternTreatmentRateNotes
104人力銀行, 104 JOB BANKInput 5%5%HR platform — taxable
1111人力銀行Input 5%5%HR platform — taxable
鼎新電腦, DIGIWINInput 5%5%Taiwanese ERP — taxable
資通電腦, ARESInput 5%5%Taiwanese software — taxable
LINE (Taiwan entity)Input 5%5%If billed via Taiwan entity

3.7 SaaS — international suppliers (reverse charge consideration)

Taiwan imposes business tax on cross-border electronic services to Taiwan businesses. The foreign supplier should register or the Taiwan buyer may need to self-assess.

PatternBilling entityTreatmentNotes
GOOGLE (Workspace, Ads, Cloud)Google Asia Pacific (SG)Reverse charge 5%Foreign electronic service — self-assess
MICROSOFT (365, Azure)Microsoft Taiwan or regionalCheck invoiceIf Taiwan entity: 5% on invoice; if foreign: self-assess
ADOBEAdobe Systems (US/SG)Reverse charge 5%Foreign service
META, FACEBOOK ADSMeta PlatformsReverse charge 5%Foreign service
SLACKSalesforce/Slack (US)Reverse charge 5%Foreign service
ZOOMZoom Video (US)Reverse charge 5%Foreign service
NOTIONNotion Labs (US)Reverse charge 5%Foreign service
ANTHROPIC, CLAUDEAnthropic (US)Reverse charge 5%Foreign service
OPENAI, CHATGPTOpenAI (US)Reverse charge 5%Foreign service
GITHUBGitHub/MicrosoftCheck entityIf via Taiwan entity: 5%; if US: reverse charge
AWSAWS Asia Pacific (SG)Reverse charge 5%Singapore entity — foreign service

3.8 Payment processors (exempt fees)

PatternTreatmentNotes
STRIPE (transaction fees)EXCLUDEPayment processing — exempt financial service
PAYPAL (fees)EXCLUDESame
LINE PAY 手續費EXCLUDESame
街口支付, JKOPAY 手續費EXCLUDESame

3.9 Internal transfers and exclusions

PatternTreatmentNotes
帳戶轉帳, 內部轉帳EXCLUDEInternal movement
借款, 還款, 貸款EXCLUDELoan principal — out of scope
薪資, 工資EXCLUDEPayroll — outside business tax scope
股利, 股息EXCLUDEDividend — outside scope
押金, 保證金EXCLUDEDeposit — out of scope until applied
ATM提款Tier 2 — askDefault exclude; ask purpose

Section 4 — Worked examples

Six classifications from a hypothetical Taipei-based IT consultant. Format: 玉山銀行 (E.SUN Bank) CSV.

Example 1 — Domestic B2B revenue (5%)

Input line: 2025/04/15 轉帳收入 中信工程顧問股份有限公司 統一發票: WX12345678 +525,000 NT$

Reasoning: Incoming NTD 525,000 from a Taiwan company for IT consulting. Business tax at 5%. Gross NTD 525,000 includes 5% tax. Net = NTD 500,000 (課稅銷售額) + NTD 25,000 output tax. A uniform invoice (統一發票) must be issued with the 8-digit business number of the buyer. Report on Form 401 box 401-1.

Classification: Output tax 5% — NTD 25,000. Net sales: NTD 500,000.

Example 2 — Export service (zero-rated, paid in foreign currency)

Input line: 2025/04/22 外匯入款 ACME CORPORATION USA Consulting Invoice TW-2025-018 +USD 10,000 (NTD 312,000)

Reasoning: USD payment from a US company for consulting services. Services provided to a foreign business paid in foreign currency qualify for zero-rating under the Business Tax Act. Evidence: contract, foreign wire transfer record. Report NTD 312,000 on box 401-3 (zero-rated). No output tax. Confirm: (a) service consumed by a foreign company; (b) payment received in foreign currency.

Classification: Zero-rated export — NTD 312,000. Output tax: NTD 0.

Example 3 — Utility expense (5%, input credit)

Input line: 2025/04/10 自動扣款 台灣電力股份有限公司 電費 2025年3月 -4,200 NT$

Reasoning: Monthly electricity bill from Taiwan Power (Taipower). Standard 5% business tax. NTD 4,200 gross. Net = NTD 4,000 + NTD 200 input tax. Taipower issues a uniform invoice — input credit of NTD 200 is claimable. Report on 401-5 (total input tax).

Classification: Input tax 5% — NTD 200. Net expense: NTD 4,000.

Example 4 — International SaaS reverse charge (Google Ads)

Input line: 2025/04/08 扣款 GOOGLE ASIA PACIFIC PTE Google Ads April 2025 -31,500 NT$

Reasoning: Google Ads billed from Singapore entity. Foreign electronic service provided to a Taiwan business. Taiwan's cross-border e-services rules require the Taiwan buyer to self-assess 5% business tax if the foreign supplier has not registered. NTD 31,500 is treated as net; self-assessed tax = NTD 31,500 × 5% = NTD 1,575. Google Singapore has Taiwan registration — check if their invoice shows Taiwan business tax. If yes, treat as standard input; if no, self-assess.

Classification: Reverse charge 5% — NTD 1,575. Confirm Google's Taiwan registration status.

Example 5 — Blocked input (personal vehicle)

Input line: 2025/04/05 扣款 中油加油站 加油費 -3,000 NT$

Reasoning: Fuel from CPC (China Petroleum Corporation / 中油). Vehicle expenses — business-use percentage unknown. Business tax rules: input tax on vehicles is disallowed if the vehicle is also used privately. Default: 0% credit until business-use percentage confirmed. If dedicated business vehicle with no personal use: full 5% input credit. Flag for Tier 2 confirmation.

Classification: Tier 2 — ask. Conservative default: no input credit (0%).

Example 6 — Exempt service received (bank interest income recorded as expense reversal)

Input line: 2025/04/01 利息收入 玉山銀行 存款利息 2025年3月 +1,250 NT$

Reasoning: Bank interest credit. Interest income is exempt from business tax in Taiwan. EXCLUDE from 營業稅 return. This is also not a supply — it is passive income. No output tax. No impact on input credit proration unless the business has significant exempt income that triggers proration rules.

Classification: EXCLUDE. Exempt interest income — outside business tax scope.


Section 5 — Tier 1 rules (compressed)

5.1 Standard rate 5%

Default rate for all taxable sales of goods and services in Taiwan. Legislation: Business Tax Act (加值型及非加值型營業稅法) Article 10.

5.2 Zero rate — exports

Exports of goods and services rendered to foreign businesses paid in foreign currency. Evidence required: export customs declaration for goods; contracts and FX transfer records for services. Legislation: Business Tax Act Article 7.

5.3 Exempt supplies

Exempt (免稅) supplies: medical and hospital services, education, cultural/arts services (some), financial services (interest, insurance premiums), residential land, sale of securities, postage stamps. No output tax; no input credit claimable on costs attributable to exempt revenue. Legislation: Business Tax Act Articles 8–9.

5.4 Uniform invoice (統一發票)

All taxable sales must be evidenced by a uniform invoice (統一發票) with a government-issued sequential number. Required fields: seller's business number (統一編號), buyer's business number (for B2B), transaction date, description, taxable amount, tax amount. Electronic invoices (電子發票) allowed if registered on the e-invoice platform.

5.5 Input credit rules

Input tax is deductible if: (1) a uniform invoice is held; (2) the purchase relates to taxable (not exempt) business activities; (3) not blocked (motor vehicles for mixed use, entertainment, personal expenses). Blocked inputs cannot be credited regardless of business purpose.

5.6 Cross-border electronic services

Foreign suppliers of electronic services (B2C to Taiwan consumers) must register if Taiwan B2C sales > NTD 480,000/year. Taiwan B2B buyers self-assess if the foreign supplier has not registered. Rate: 5%.

5.7 Small business tax (小規模營業人)

Monthly revenue below NTD 80,000 (goods) / NTD 40,000 (services): file quarterly Form 403. Tax is assessed by the tax office on a deemed basis (usually 1% of sales for food/beverage; standard rates otherwise). No input credits. No uniform invoice required (use plain receipt).

5.8 Filing deadlines

FilerPeriodDue date
General taxpayer (bi-monthly)Jan–Feb, Mar–Apr, May–Jun, Jul–Aug, Sep–Oct, Nov–Dec15th of following month
Small business (quarterly)Q1, Q2, Q3, Q415th of month following quarter

5.9 Penalties

OffencePenalty
Late filingNTD 1,200–12,000
Late payment1% per month up to 30%
Failure to issue uniform invoiceNTD 3,000–30,000 + 5× assessed tax
Tax evasionUp to 5× evaded tax + potential criminal liability

Section 6 — Tier 2 catalogue

6.1 Vehicle expenses — business-use percentage

What it shows: Fuel, tolls, parking, or vehicle lease payment. What's missing: Proportion of business vs. personal use. Conservative default: 0% input credit. Question to ask: "Is this vehicle used exclusively for business? If mixed, what is the estimated business-use percentage? Is a mileage log kept?"

6.2 Export qualification for services

What it shows: Revenue from a foreign customer. What's missing: Whether payment was received in foreign currency and the service was consumed outside Taiwan. Conservative default: Taxable at 5%. Question to ask: "Was payment received in foreign currency? Was the service entirely consumed by a foreign entity outside Taiwan?"

6.3 International SaaS — registered or not in Taiwan

What it shows: Payment to a foreign tech company. What's missing: Whether the foreign supplier has registered for Taiwan business tax. Conservative default: Self-assess 5% reverse charge. Question to ask: "Does the invoice from this supplier show a Taiwan business number (統一編號)? If yes, treat as standard; if no, self-assess."

6.4 Mixed residential/commercial property rent

What it shows: Rent payment. What's missing: Whether commercial (taxable) or residential (depends — residential land exempt but building portion taxable in some cases). Conservative default: Taxable at 5% if commercial; check for exempt status. Question to ask: "Is this rent for commercial office space or residential? Does the landlord issue a uniform invoice?"

6.5 ATM cash withdrawals

What it shows: Cash withdrawal. What's missing: What the cash was spent on. Conservative default: Exclude. Question to ask: "What was this cash used for? Do you have receipts?"


Section 7 — Excel working paper template

TAIWAN BUSINESS TAX WORKING PAPER — 營業稅計算表
Period: ____________  Entity: ____________  統一編號: ____________

A. OUTPUT TAX (銷項稅額)
  A1. Taxable sales at 5% (net)               ___________
  A2. Output tax at 5% (A1 × 5%)              ___________
  A3. Zero-rated exports (net)                ___________
  A4. Exempt sales (net)                      ___________
  A5. Reverse charge output self-assessed     ___________

B. INPUT TAX (進項稅額)
  B1. Domestic purchases — 5% (net)           ___________
  B2. Input tax at 5% (B1 × 5%)               ___________
  B3. Import business tax paid                ___________
  B4. Reverse charge self-assessed input      ___________
  B5. Total input tax (B2+B3+B4)             ___________
  B6. Disallowed input (vehicles, personal)   ___________
  B7. Net input (B5 − B6)                     ___________

C. NET PAYABLE
  C1. Net tax (A2 − B7)                       ___________
  C2. Prior period credit carried forward     ___________
  C3. Net payable / (excess credit) (C1 − C2) ___________

REVIEWER FLAGS:
  [ ] All uniform invoices (統一發票) confirmed?
  [ ] Export FX evidence available for zero-rated sales?
  [ ] Vehicle use percentage confirmed?
  [ ] International SaaS registration status confirmed?
  [ ] Exempt income proration check done?

Section 8 — Bank statement reading guide

Common Taiwanese bank CSV formats

BankKey columnsDate formatAmount
玉山銀行 E.SUN交易日期, 摘要, 交易金額, 餘額YYYY/MM/DDNTD integer or decimal
國泰世華 Cathay交易日, 說明, 存入, 提出, 餘額YYYY/MM/DDNTD
中信銀行 CTBC交易日期, 交易說明, 轉入金額, 轉出金額, 餘額YYYY-MM-DDNTD
富邦銀行 Fubon交易日期, 交易種類, 金額, 餘額YYYYMMDDNTD
台灣銀行 BOT交易日, 摘要, 借方金額, 貸方金額, 餘額YYYY/MM/DDNTD
中華郵政 Chunghwa Post日期, 說明, 取款, 存款, 餘額YYYY/MM/DDNTD

Key Taiwanese banking terms

ChineseMeaningClassification hint
轉帳收入 / 入款Incoming transferPotential revenue
轉帳支出 / 扣款Outgoing transfer / debitPotential expense
自動扣款Auto-debit / standing orderRecurring expense
外匯入款Foreign currency receiptPotential export
手續費Handling feeBank fee — exempt
利息收入Interest incomeExempt
餘額BalanceRunning balance — ignore
摘要 / 說明Description / narrativeKey classification field
ATM提款ATM withdrawalTier 2 — ask
薪資SalaryOut of scope

Section 9 — Onboarding fallback

If the client provides a bank statement but cannot answer all questions immediately:

  1. Classify all transactions using the pattern library (Section 3)
  2. Apply conservative defaults (Section 1)
  3. Mark Tier 2 items as "PENDING — reviewer must confirm"
  4. Generate working paper with flags
TAIWAN BUSINESS TAX ONBOARDING — MINIMUM QUESTIONS
1. Are you a general taxpayer (一般納稅義務人) or small business (小規模)?
2. Your 統一編號 (8-digit business number)?
3. Filing period: which bi-monthly period does this bank statement cover?
4. Do you have any export sales (paid in foreign currency from foreign clients)?
5. Any vehicle expenses? Business-use percentage?
6. Any international SaaS subscriptions? Do those suppliers show a Taiwan 統一編號?
7. Do you make any exempt sales (land, financial services, medical)?
8. Prior period excess credit (留抵稅額) carried forward amount?

Section 10 — Reference material

Key legislation

TopicReference
Business Tax Act加值型及非加值型營業稅法
Standard rateBusiness Tax Act Article 10
Zero rateBusiness Tax Act Article 7
ExemptionsBusiness Tax Act Articles 8–9
Uniform invoice統一發票使用辦法
Cross-border e-services財政部公告 (MoF Announcement) on B2C digital services
Small businessBusiness Tax Act Article 13
PenaltiesBusiness Tax Act Articles 45–52; Tax Collection Act

Known gaps

  • Partial exemption proration (exempt income > de minimis) — escalate to 會計師
  • Financial institution special calculation — escalate
  • Non-resident B2C e-service registration — out of scope
  • Land transaction exemption interaction — verify with 會計師

Self-check before filing

  • All uniform invoices issued for taxable sales
  • Export FX documentation held for zero-rated sales
  • Input tax correctly split: taxable vs. exempt vs. blocked
  • International SaaS reverse charge self-assessed where needed
  • Prior period credit (留抵稅額) correctly carried forward
  • Vehicle and entertainment inputs correctly blocked

Changelog

VersionDateChange
1.02024Initial release
2.0April 2026Full v2.0 rewrite: pattern library, worked examples, no inline tier tags

Prohibitions

  • NEVER claim input credit without a valid uniform invoice (統一發票)
  • NEVER zero-rate a service without confirming FX payment from a foreign entity
  • NEVER allow small business taxpayers to claim input credits
  • NEVER omit self-assessed reverse charge for foreign electronic services
  • NEVER classify bank interest as taxable revenue — it is exempt
  • NEVER present calculations as definitive — direct to a licensed 會計師 (CPA) for confirmation

Disclaimer

This skill and its outputs are provided for informational and computational purposes only and do not constitute tax, legal, or financial advice. Open Accountants and its contributors accept no liability for any errors, omissions, or outcomes. All outputs must be reviewed by a qualified professional (會計師 or equivalent) before filing.

The most up-to-date version is maintained at openaccountants.com.


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