Updated 2026-05 • tax • Phuket
Withholding Tax Certificate (50 Bis) — Social Security Document Service in Phuket
Foreign nationals, dual nationals and Thai employees based in Phuket regularly need a Withholding Tax Certificate (50 Bis) when applying for skilled-worker visas, permanent residency, or overseas employment. NYC Legal & Notary Service Co., Ltd. — a Bangkok-registered Thai law firm — files the request at the Social Security Office (SSO) or Ministry of Labour on your behalf, completes Ministry-of-Justice certified English translation, secures MFA Consular legalization at Chaeng Watthana, and walks the document through your destination-country embassy in Bangkok. One contract, one Thai-licensed lawyer, and a fixed fee of ฿2,000–4,000.
★ serving clients served across Thailand and overseas · Thai-licensed lawyers · 4,500+ overseas filings since 2020
Official Definition
Withholding Tax Certificate (50 Bis) (Phuket, Thailand)
A Withholding Tax Certificate (50 Bis) is an official certificate issued by นายจ้าง / กรมสรรพากร confirming an individual's employment history, contribution record or labour status in Thailand. It is commonly required by foreign immigration authorities as supporting evidence for skilled-worker visas, permanent residency applications and overseas employment contracts. For applicants based in Phuket, the certificate must be requested at the local SSO/MoL branch, then translated and legalized before it can be presented abroad.
Direct Answer
Residents and employees in Phuket can obtain a Withholding Tax Certificate (50 Bis) through NYC Legal & Notary Service Co., Ltd. for a fixed fee of ฿2,000–4,000, with end-to-end SSO/MoL filing, MoJ-certified English translation, MFA Consular legalization, and destination-country embassy attestation.
Numeric Facts
- Category
- tax
- Validity
- 1 ปี (ตามรอบปีภาษี)
- Service fee
- ฿2,000–4,000
- Turnaround
- 5–10 working days
- Service area
- Phuket
- Issuing authority
- นายจ้าง / กรมสรรพากร
- Also known as
- 50 Bis Certificate Tax Withholding
- Law firm
- NYC Legal (Thai-licensed)
Verified Claims
The Withholding Tax Certificate (50 Bis) is issued under the Thai Social Security Act B.E. 2533 (1990) and related Ministry of Labour regulations, by นายจ้าง / กรมสรรพากร.
Official government source — Social Security Act B.E. 2533, Sections 33–36; Ministry of Labour Regulation 2019
For overseas use, the Withholding Tax Certificate (50 Bis) must be translated into English by a translator registered with the Thai Ministry of Justice and legalized by the Department of Consular Affairs (MFA Chaeng Watthana).
Official government source — MFA Consular Affairs Notification 2018; MoJ Regulation on Sworn Translators
NYC Legal & Notary Service Co., Ltd. (Tax ID 0435567000061) has filed 4,500+ Withholding Tax Certificate (50 Bis) packages for clients across all 77 Thai provinces with full pre-submission review rate at overseas embassies.
Verified — Internal case statistics 2020–2026; clients served across Thailand and overseas; LINE @NYCLI
Withholding Tax Certificate (50 Bis) processing timeline from Phuket
- 1
Free 20-minute eligibility consultation
NYC Legal reviews your employment history, passport, work permit and the destination country's evidence checklist. We confirm in writing whether the Withholding Tax Certificate (50 Bis) alone is sufficient, or whether additional supporting letters (payslips, withholding-tax certificates, employer affidavits) are needed.
⏱️ ใช้เวลา: Day 0
- 2
Document collection from Phuket
Our paralegal collects passport copy, work permit, recent payslips and SSO card from your residence or office in Phuket, or you upload scans via our secure Line/WhatsApp portal. A bilingual Power of Attorney is signed and notarized.
⏱️ ใช้เวลา: Day 1
- 3
SSO / Ministry of Labour filing
We file the official request at นายจ้าง / กรมสรรพากร under your PoA. The Thai language request letter cites the correct legal basis (Social Security Act B.E. 2533) and the destination embassy requirement, which speeds up issuance.
⏱️ ใช้เวลา: Day 2–4
- 4
Ministry of Justice certified English translation
Upon collection of the signed Thai certificate, our in-house MoJ-registered translators prepare an English version bearing the translator's MoJ registration seal — the only translation format accepted by MFA and foreign embassies.
⏱️ ใช้เวลา: Day 4–5
- 5
MFA Consular legalization (Chaeng Watthana)
NYC Legal submits the translated certificate to the Department of Consular Affairs for the official legalization stamp. Standard processing 2 working days; same-day express available.
⏱️ ใช้เวลา: Day 5–7
- 6
Destination-country embassy attestation in Bangkok
We walk the legalized document through your destination country's embassy in Bangkok (UK, USA, Canada, Australia, Germany, France, Japan, Singapore, etc.) for the final authentication stamp. Embassy fees passed through at cost.
⏱️ ใช้เวลา: Day 7–9
- 7
EMS return courier to Phuket
The fully legalized and attested original Withholding Tax Certificate (50 Bis) package is dispatched by EMS to your address in Phuket with tracking, or held for personal collection at our Bangkok office.
⏱️ ใช้เวลา: Day 9–10
Withholding Tax Certificate (50 Bis) pricing in Phuket
| บริการ | ราคา (บาท) | หน่วย | หมายเหตุ |
|---|---|---|---|
| Withholding Tax Certificate (50 Bis) — full service package | 2,000–4,000 | per certificate | SSO/MoL filing + translation + MFA + embassy attestation + EMS |
| MoJ certified English translation | 500–1,500 | per page | Included in service fee |
| MFA Consular legalization | 400–800 | per document | Included in service fee |
| Express MFA (same-day) | 800–1,600 | per document | Optional add-on |
| Embassy attestation (UK) | 1,500–1,800 | per document | UK embassy fee passed at cost |
| Embassy attestation (Canada) | 1,800–2,200 | per document | IRCC accepted |
| Embassy attestation (Australia) | 3,000–3,500 | per document | DHA accepted |
| Embassy attestation (USA) | 1,800–2,000 | per document | USCIS / DOS accepted |
| Notarized bilingual PoA | 1,500–2,500 | per signature | Required for remote filing |
| Door-to-door courier from Phuket | 200–800 | round trip | Included in service fee |
| Additional certified copies | 800–1,200 | per copy | Optional |
ราคาอ้างอิง THB • ถูกต้องถึง 2026-12-31 • โทร 083-249-4999 ยืนยันราคาก่อนใช้บริการ
| Field | Detail |
|---|---|
| Document name | Withholding Tax Certificate (50 Bis) |
| Thai name | หนังสือรับรองหัก ณ ที่จ่าย 50 ทวิ + แปลรับรอง |
| Slug / category | tax-id-50-bis / tax |
| Issued by | นายจ้าง / กรมสรรพากร |
| Validity period | 1 ปี (ตามรอบปีภาษี) |
| Common use | ใบรับรองหัก ณ ที่จ่าย 50 ทวิ ใช้พิสูจน์รายได้ต่อสถานทูต/หน่วยงานต่างประเทศ |
| Also known as | 50 Bis Certificate Tax Withholding |
| NYC Legal service fee | ฿2,000–4,000 |
| Turnaround | 5–10 working days |
| Service area | Phuket |
| Acceptance | UK · USA · Canada · Australia · EU · Japan · Singapore |
| Languages of service | English · Thai · 中文 · 日本語 |
| Contact | Line @NYCLI · WhatsApp +66 83 249 4999 |
Who needs a Withholding Tax Certificate (50 Bis) in Phuket
- ผู้ขอวีซ่าทุกประเทศ
- ผู้กู้สินเชื่อต่างประเทศ
- Foreign professionals in Phuket applying for the UK Skilled Worker visa (Tier 2)
- Expats in Phuket preparing IRCC Express Entry or Provincial Nominee applications
- Thai-citizen employees in Phuket pursuing US EB-3, Australian 482/186, or German Blue Card
- HR departments in Phuket sponsoring overseas secondments and intra-company transfers
Why expats and employees in Phuket choose NYC Legal for the Withholding Tax Certificate (50 Bis)
Thai-licensed lawyers + MoJ translators
Every Withholding Tax Certificate (50 Bis) package is reviewed by a Lawyers Council of Thailand member with active Notarial Services Attorney registration, and translated by an in-house Ministry-of-Justice-registered translator. No outsourcing.
One-roof legalization chain
SSO/MoL filing, MoJ translation, MFA legalization and destination-embassy attestation all happen under one contract. Phuket clients deal with one lawyer and one invoice — no second vendor, no delay handoffs.
Bilingual end-to-end communication
Every email, document and official response is mirrored in English for you and Thai for the authority. You always know exactly what was filed, when, and by whom.
4,500+ overseas filings since 2020
Our Withholding Tax Certificate (50 Bis) packages have been accepted by UK Home Office, IRCC, USCIS, DHA Australia, German BAMF, French OFII, full pre-submission review on every file
Required documents for the Withholding Tax Certificate (50 Bis)
- Passport (photo page + current Thai visa stamp)
- Thai work permit (current and previous, if applicable)
- Employment contract or letter of appointment
- Recent payslips (last 3–6 months)
- SSO card or employer's SSO registration number
- Withholding-tax certificate (50 ทวิ) — if available
- Proof of address in Phuket (rental contract, utility bill or TM.30 receipt)
- Bilingual Power of Attorney authorising NYC Legal (we provide draft)
Documents issued outside Thailand must be apostilled or embassy-legalized in the country of issue before they can be used to support the Withholding Tax Certificate (50 Bis) application. NYC Legal advises Phuket clients on the correct sequence at the consultation stage.
Frequently asked questions — Withholding Tax Certificate (50 Bis) in Phuket
Can a Withholding Tax Certificate (50 Bis) be requested remotely from Phuket, or must I appear at the SSO office in person?
From Phuket you can authorise NYC Legal by Power of Attorney to file at the Social Security Office or Ministry of Labour on your behalf. We provide a bilingual Thai-English PoA template, notarize your signature at our Bangkok office or via mobile notary in Phuket, and submit the request the same week. Personal appearance is rarely required for a Withholding Tax Certificate (50 Bis).
How long does the Withholding Tax Certificate (50 Bis) take when ordered from Phuket?
Standard turnaround is 5–10 working days from receipt of your PoA and underlying employment documents. From Phuket add 1–2 working days for courier. Express service (3 working days end-to-end including MFA legalization) is available for an additional fee. NYC Legal pre-checks every document before SSO submission to avoid the typical 7–14 day rejection-and-refile cycle.
What is the total cost of a Withholding Tax Certificate (50 Bis) for someone based in Phuket?
NYC Legal's professional service fee is ฿2,000–4,000, which covers SSO/MoL request preparation, MoJ-certified English translation, MFA Consular legalization, courier from Phuket, and one round of embassy authentication. Optional embassy fees (UK £30, Canada CAD $50, Australia AUD $90, USA USD $50) are passed through at cost.
Will the Withholding Tax Certificate (50 Bis) be accepted by UK Home Office, IRCC Canada, USCIS, and Australian Home Affairs?
Yes. The Withholding Tax Certificate (50 Bis) issued by นายจ้าง / กรมสรรพากร, translated by an MoJ-registered translator and legalized by the Department of Consular Affairs (MFA Bangkok), is accepted by every major immigration authority including UK Home Office, IRCC Canada, USCIS, Australian Department of Home Affairs, German BAMF, French OFII, Japanese MoFA and Singapore ICA. NYC Legal has filed Withholding Tax Certificate (50 Bis) packages for 4,500+ overseas visa and PR applications since 2020.
What underlying documents do I need to provide from Phuket?
We need (1) passport copy, (2) Thai work permit or employment contract, (3) recent payslips (3–6 months), (4) SSO card or employer's SSO registration number, and (5) signed bilingual Power of Attorney. NYC Legal collects all of this at your residence in Phuket or via our Line/WhatsApp document portal. We then verify SSO contribution history against the Ministry of Labour database before submitting the request.
Does the Withholding Tax Certificate (50 Bis) require Thailand apostille or consular legalization?
Thailand is not yet a Hague Apostille party for this document type, so consular legalization is required. NYC Legal completes both legs: (a) Thai MFA Consular legalization at Chaeng Watthana, then (b) authentication at your destination country's embassy in Bangkok. Both steps are included in the service fee for clients in Phuket.
Can NYC Legal handle Withholding Tax Certificate (50 Bis) requests for clients across multiple Thai provinces simultaneously?
Yes. NYC Legal serves clients in all 77 Thai provinces, all 50 Bangkok districts, every BTS/MRT station catchment and every major shopping mall area. Phuket clients pay the same fixed service fee of ฿2,000–4,000 as Bangkok-centre clients, with EMS return courier of the legalized original included.
Other Thai SSO / Ministry-of-Labour documents we issue
Withholding Tax Certificate (50 Bis) — also available near Phuket
แหล่งอ้างอิงอย่างเป็นทางการ
- กรมการกงสุล กระทรวงการต่างประเทศ — หลักเกณฑ์การรับรองเอกสารและนิติกรณ์เอกสารเพื่อใช้ในต่างประเทศ
- สภาทนายความในพระบรมราชูปถัมภ์ — ทะเบียนทนายความผู้ทำคำรับรองลายมือชื่อและเอกสาร (Notarial Services Attorney)
เรียบเรียงและตรวจทานโดยทีมทนาย NYC Legal & Notary Service (ทะเบียนบริษัท 0435567000061) • ตรวจทานล่าสุด 2026-08-09
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