報稅最常見的 10 個錯誤:扶養、扣除額、所得漏報一次整理

每年 5 月報稅,民眾最常遇到的不是「不會填」,而是「以為可以、結果被補稅甚至罰鍰」。以下由專業會計師整理實務上最高頻率的 10 個錯誤,帶你一次避開地雷。

錯誤 1:扶養親屬 — 別挑戰國稅局的勾稽系統

常見情境:認為只要有給生活費,就能報扶養。例如列報有薪資收入的父母,或父母已有其他兄弟姊妹列報。

會計師糾錯: 扶養須符合「所得門檻」或「無謀生能力」。

  • 父母/祖父母: 未滿 60 歲者,年所得需低於免稅額(113 年度為 9.7 萬)。
  • 其他親屬(姪、甥、舅等): 除需未成年或在學外,還須具備「同居一家」事實與「家長家屬關係」。

專業建議: 報稅前先確認被扶養人的所得資料,若其所得高於免稅額 + 標準扣除額,列報反而不划算。

錯誤 2:同一位親屬「兄弟姊妹重複列報」

常見情境:兄弟姊妹各自申報時都填入父母,想說「大家都有養」。  

會計師糾錯: 同一課稅年度,一位親屬原則上只能被一位納稅義務人列報扶養。國稅局勾稽到重複申報,通常會要求你們擇一更正,或補件說明由誰扶養。

專業建議:

  • 需要時保留匯款/生活費證明、同戶籍或居住事實等資料,以備查核。
  • 由「所得級距最高」的人列報最省稅。 例如稅率 20% 的大哥列報父母,省下的稅金比 5% 的小妹多出 4 倍。家族內部可私下協議將省下的稅金轉為長輩紅包
錯誤 3:夫妻申報方式沒選對,稅差「差很多」

常見情境: 結婚後一律用「夫妻合併申報」,沒評估分開計稅或申報方式的差異。

會計師糾錯: 夫妻雖須合併申報,但「計稅方式」可選:(1) 全戶合併 (2) 薪資分開 (3) 各類所得分開。

專業建議: 雙薪家庭通常選「薪資分開計稅」最划算;若有高額股利或利息,則需測試「各類所得分開計稅」。

錯誤 4:扣除額選錯(標準 vs 列舉)— 收據留了一堆卻沒用上

常見情境: 沒發現列舉總額(捐贈+保費+醫藥+房貸/房租)已超過標準扣除額,卻還是選標準扣除。

會計師糾錯: 113 年度標準扣除額:單身 13.1 萬、夫妻 26.2 萬。

專業建議: 只要上述 5 項支出總和超過門檻,就選「列舉」。尤其是剛買房(房貸利息)或有大額自費醫療的人,一定要手動核對。

錯誤 5:保險費以為「全部都能扣」— 其實有範圍與限制

常見情境:把投資型保單、某些非典型保險性質的支出也當保險費扣除。

會計師糾錯: 1. 受扶養親屬須為「直系」(父母、子女)。 2. 要保人與被保險人須在同一申報戶內。

專業建議: 每人每年有 2.4 萬元的人身保險限額(不含健保),但健保費、補充保費可「全額扣除」且無上限,務必確認系統是否完整載入。

 

錯誤 6:醫藥及生育費列舉 — 未扣除保險理賠

常見情境:把醫美、坐月子、美白牙齒收據拿來扣除,或理賠過的醫療費照樣全額列。

會計師糾錯: 醫療扣除限於「醫療性質」,且受有保險理賠部分不得扣除

專業建議: 僅保留公立醫院或健保特約醫院的收據。若有大額支出,務必附上診斷證明書。

錯誤 7:房租與房貸利息 — 貪心雙報

常見情境:去年上半年租屋、下半年買房,想將兩份支出都列舉。

會計師糾錯: 同一申報戶在同一期間內,房租支出(上限 18 萬)與房貸利息(上限 30 萬)僅能擇一。

專業建議: 試算兩者的「天數比例」與「金額」,選大者列報。113 年起房租改為「特別扣除額」,門檻與細節更優,務必留意。

錯誤 8:所得漏報— 兼職、接案、補助、海外所得最容易漏

常見情境:認為沒有收到紙本扣繳憑單就不用報。

會計師糾錯: 現在幾乎所有合法所得(含外送平台、稿費、利息)都在國稅局系統中。海外所得(美股、加密貨幣)超過 100 萬台幣亦需申報。

專業建議: 報稅時務必使用「行動電話認證」或「自然人憑證」查詢年度所得資料,系統帶出的資料最準確。

錯誤 9:股利課稅方式沒試算— 選錯可能差一大截

常見情境:沒試算就選「合併計稅」或「分開計稅」。

會計師糾錯: 合併計稅: 享 8.5% 抵減稅額(上限 8 萬),適合小資族。
       分開計稅: 單一稅率 28%,適合所得級距在 30% 以上的大戶。

專業建議: 系統會自動試算,請直接比較最後的「應納稅額」,哪邊低就選哪邊。

錯誤 10:以為「申報完就沒事」— 憑證未留存

常見情境:申報完就把收據、醫藥費正本丟掉。

會計師糾錯: 國稅局的抽查期(核課期間)長達 5~7 年。

專業建議: 申報成功後,務必下載 PDF 存檔。若有手動輸入的列舉扣除額,收據建議掃描備份並保留正本 7 年。

會計師最後提醒:

「節稅」是在去年度 12/31 以前完成的佈局;「報稅」則是在今年 5 月完成的精準核對。

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Establishment of a Taiwan Branch by Foreign Entities: Process & Required Documents

1) Phase 1: Pre-operation Preparation and Qualification Review from Abroad

  1. Company Name Reservation and Scope of Business Pre-examination (Administration of Commerce, Ministry of Economic Affairs)
  • Priority must be given to the Chinese translation of the foreign parent company's name. The fixed format must prepend "Foreign Merchant [Nationality of Parent Company]" and append "Taiwan Branch" (e.g., Foreign Merchant ○○ Co., Ltd. Taiwan Branch).
  • Required items :1–3 proposed company names; 2–10 business items (negative list).
  1. Document Preparation for Foreign Parent Company
  • Required Documents :
    • Foreign Corporate Qualification Proof Documents (direct submission of official copies): Certificate of Corporate Qualification, official registration/declaration documents required for anti-money laundering (AML) as mentioned above, register of directors/shareholders, and copies of passports or identification documents of relevant personnel.
    • Foreign Capital Status Declaration: Must be physically signed by all relevant personnel, certifying that they do not hold Mainland China capital status and comply with laws and regulations (if the Person in Charge and the Manager are different people, both must sign separate forms).
    • Power of Attorney (POA): Must be stamped with a page-spanning seal (if different people, the POA must explicitly state the dual authorization text).
  • Direct Submission: Authorized signatories can sign and seal directly, and submit for review "without undergoing any notarization or legalization beforehand." In practice, there is a very high probability of direct approval and issuance of the Phase 1 Supplementation Letter. (Note: If the competent authority randomly checks and requests legalization later, you can then commission a local notary public and verify it through the overseas mission/office.)
  1. Submission of Phase 1 Registration: Requesting the "Operating Capital Supplementation Letter"
  • Process:Submit the approved Name Reservation Form, the identity documents of both parties mentioned above, the POA, and foreign corporate qualification proof documents to the "Administration of Commerce, Ministry of Economic Affairs" for review.
  • Result:Successfully obtain the "Phase 1 Supplementation Letter" from the Ministry of Economic Affairs.

2) Phase 2: Localizing Taiwan Identity and Bank Account Opening

  1. Obtaining the Visa and UI Number
  • Process:Process: The person opening the account in Taiwan (usually the Manager) applies for a Taiwan visa ➔ obtains a valid resident or visitor visa (or relevant entry/exit permit). After entering Taiwan (or via the online system), present the passport and relevant visa to the National Immigration Agency, Ministry of the Interior, to apply for the "Record of UI Number for Foreign Nationals."
  • Note: If the Person in Charge and the Manager are different people, the big boss remaining abroad (Person in Charge A) must still commission a Taiwan agent via paper documents to apply to the Immigration Agency for Person A's own "Record of UI Number." The UI numbers of both individuals must be ready at the time of submission.
  1. Pre-examination of Taipei City Business Premises Address and Signing Lease Agreement
  • Business Premises Address Pre-examination (Department of Urban Development / Building Administration Office): Taipei City strictly enforces land use zoning regulations. Before officially signing a lease agreement, make sure to submit an address pre-examination through the "Taipei City Commercial Office Business Premises Review System" to avoid failing registration later due to non-compliance, which could result in a total loss of high deposits, rent, and decoration costs.
  • Required items :Building Ownership Certificate or Building Registration Transcript (Category 2 Transcript).
  • Signing Lease:Formally sign a contract with the landlord after passing the pre-examination (the lease should state that it is for the branch office's business use).
  • Documents to Obtain:Building owner's consent letter and a copy of the latest house tax bill (or ownership certificate).
  1. Opening a Bank "Preparatory Office" Account for the Branch
  • Account Name:The format is fixed as "Foreign Merchant [Parent Company Name] Co., Ltd. Taiwan Branch Preparatory Office".
  • Required items :Required items: Original copy of the "Supplementation Letter" from the Administration of Commerce, the approved Company Name Reservation Form, original IDs of the account opener (passport, Record of UI Number, relevant visa), (if different people, add Person in Charge A's passport and Record of UI Number), original POA from the parent company explicitly authorizing account opening, parent company foreign corporate qualification proof documents, registers of shareholders/directors, ownership structure chart of ultimate beneficiaries, and the preparatory office small stamp for bank use (usually the Manager's personal stamp if they are different people).

3) Phase 3: Influx of Capital and CPA Certification

  1. Inward Remittance of "Operating Capital" and Foreign Exchange Settlement (Bank)
  • Process:Process: The foreign parent company account remits the operating capital into the preparatory office account in Taiwan.
  • Attention:During foreign exchange settlement, you must request and safely keep the "Inward Remittance Advice" and "Foreign Exchange Purchase Memorandum" (the nature of settlement must be marked as "310 Operating Capital"). The beneficiary name must perfectly match the branch office name.
  • Applying for Balance Certificate:On the day following the deposit of operating capital, apply to the bank for a Certificate of Deposit Balance.
  1. CPA Audit and Certification of Operating Capital
  • Legal Basis:According to Article 5 of the Regulations Governing Certified Public Accountants' Auditing and Certification of Registered Capital of Companies, the establishment of a branch office must be certified by a CPA.

Required items :Required items: Original Bank Certificate of Deposit Balance, copy of the preparatory office bankbook cover, stamped page, and inner pages (including remittance and settlement records), copies of the Inward Remittance Advice and Foreign Exchange Purchase Memorandum, copy of the Ministry of Economic Affairs Supplementation Letter, parent company foreign corporate qualification proof documents, and the branch office establishment registration form.

4) Phase 4: Final Approval and Launch of Daily Operations

  1. Submission of Phase 2 Supplementation ➔ Obtaining the Unified Business Number (UBN)
  • Process:Process: Return the "Inward Remittance Advice," "Foreign Exchange Purchase Memorandum," "CPA Capital Audit Report," along with the Records of UI Number, passports, ID copies of relevant personnel, and physically signed declarations/letters of undertaking to the Ministry of Economic Affairs for supplementation.
  • Result:Result: Officially receive the approval letter for the establishment of the foreign company's Taiwan branch and obtain the Unified Business Number (UBN).
  1. Business Registration (Tax Registration) (National Taxation Bureaus, Ministry of Finance)
  • Process:Process: Apply for tax registration at the local National Taxation Bureau branch or office where the branch is located to obtain the business tax filing status.
  1. Activation of Invoices
  • E-Invoices:Register on the Ministry of Finance's E-Invoice Integrated Service Platform and apply for e-invoice track numbers.
  • Paper Invoices:Apply to the National Taxation Bureau for a "Unified Invoice Purchasing Certificate" to purchase paper invoices.
  • Required items :Required items: Original approval letter from the Administration of Commerce, original company registration form, original tax registration approval letter, original dual IDs of the person in charge, official company stamps (large and small), invoice stamp, etc.
  1. Converting "Preparatory Account" into "Official Company Account" (Bank)
  • Process:Process: The account opener goes to the original bank to officially rename and convert the preparatory office account into an official branch office bank account. Only at this stage can funds be freely utilized.
  • Required items :Required items: Original approval letter from the Ministry of Economic Affairs, original branch office establishment registration form, copy of the tax registration approval letter, dual IDs of the account opener, and official corporate stamps (large and small).
  1. Subsequent Daily Operations Work
  • 14.1 Certification for Administration and Commerce (MOEACA IC Card):Apply at the MOEA Certification Authority for online tax filing, labor/health insurance, e-invoicing, and other operations.
  • 14.2 Import/Export Exporter/Importer Registration:If engaged in trading business, register with the International Trade Administration, Ministry of Economic Affairs. According to Article 4 of the Regulations Governing Registration of Exporters and Importers, the English name of the branch must indicate its nationality and branch status (e.g., must include the nationality name and the "Taiwan Branch" text), otherwise it will be rejected.
  • 14.3 Establishing Insured Units:Set up labor insurance, health insurance, and labor pension contribution accounts with the Bureau of Labor Insurance and the National Health Insurance Administration.
  • 14.4 Work Permit and Residency: Apply to the Ministry of Labor for a foreigner work permit for the branch manager. Once obtained, the manager can apply to or change their long-term Alien Residence Certificate (ARC) at the Immigration Agency to legally reside, work, and live in Taiwan.