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Personal Income Tax Return — PND.91 (salary only) ภ.ง.ด.91

Annual PIT return for salaried employees (Sec. 40(1) only). Required by most embassies for visa applications.

Who

Employees earning salary only (no freelance/business/rental income)

Gov Fee

Free filing; certified copy THB 50/page; service from THB 2,000

Timeline

File 1 Jan–31 Mar (extra month for e-Filing)

Authority

Revenue Department

Legal Basis

Revenue Code Sec. 40(1), 56

Eligibility

  • Thai tax ID
  • Salary income only (Sec. 40(1))
  • Annual salary > 120,000 THB (single) / 220,000 THB (married)

Required Documents

  • Tax ID/passport
  • 50 bis from employer
  • Allowance & deduction evidence

Procedure

  1. Gather 50 bis
  2. Compute tax
  3. e-File / branch
  4. Refund or pay balance
  5. Certified copy + translation

Fee Structure

Filing free. Our service covers preparation, e-Filing, certified copy, and translation.

Cross-Border / DTA Notes

Most Schengen consulates require last 6 months of payslips + last PND.91 with translation.

Related Services

ILC provides the full chain — e-Filing, certified copies at the RD, MoJ-certified translation, MFA legalization, Apostille (from 2025), and embassy submission, plus DTA and visa advisory.

Post-Service Policy

If a document is rejected due to a defect in our translation or certification, we redo and resubmit at no extra service fee (government fees excluded). This is service responsibility, not a guarantee of Revenue Department / MFA / embassy discretion.

In-Depth Guide: Personal Income Tax Return — PND.91 (salary only) (ภ.ง.ด.91)

Personal Income Tax Return — PND.91 (salary only) is delivered under ILC's Thai Tax Returns and Revenue Letters — PND, PP, RO practice, combining MoJ-certified translation, MFA legalization, embassy liaison, and Thai government filing under one project manager. Every case is handled by a NAATI-accredited translator, a Thai Notarial Services Attorney, and a dedicated case coordinator.

Thai tax administration by the Revenue Department produces a family of forms and certificates that ILC prepares, translates, and legalises for both individual and corporate clients: PND.90/91 (personal income tax), PND.94 (mid-year PIT), PND.50/51 (corporate income tax), PP.30/36 (VAT), PT.40 (specific business tax), PND.1/3/53/54 (withholding tax), and the RO.22 Tax Residence Certificate (TRC) used for Double Taxation Agreement (DTA) relief. ILC's mandate covers preparation, filing, DTA planning (Thailand has 61 DTAs in force), and — after filing — MFA + destination-country embassy chain for use overseas. From 2024, Thailand's Foreign-Sourced Income tax rule (Order Por 161/2566 and 162/2567) requires Thai tax residents to declare foreign income remitted to Thailand, making tax residency planning a top priority for international clients.

Why choose ILC for Personal Income Tax Return — PND.91 (salary only)

With more than 15 years of practice, ILC covers every embassy in Bangkok and both MFA offices (Chaengwattana and Chiang Mai). We operate a two-tier QA review and refund the service fee if a document is rejected due to a defect in our translation or certification — government fees and officer discretion excluded.

How Personal Income Tax Return — PND.91 (salary only) is Processed

The workflow below reflects current 2025–2026 practice with the relevant Thai authority and factors in queue seasonality, translation dependencies, and cross-agency handoffs.

  1. 1) Residency and DTA scoping

    Determine Thai tax residency (183-day rule) and mapping to applicable DTA.

  2. 2) Documentation

    Salary slips, dividend certificates, and foreign-tax paid statements collected.

  3. 3) Return preparation

    PND / PP / PT forms drafted in Thai and English.

  4. 4) e-Filing and payment

    Filed through Revenue Department e-Filing with e-Payment reconciliation.

  5. 5) TRC application

    RO.22 issued within 30 working days if requested for DTA relief.

  6. 6) MFA + embassy chain

    TRC or tax return translated, MFA-legalised, and embassy-stamped for overseas use.

Documents & Requirements for Personal Income Tax Return — PND.91 (salary only)

The checklist below covers standard files. Complex or corporate matters can add supplementary certificates, board resolutions, or notarised affidavits; ILC brief these during the intake call.

  • Passport / Thai ID
  • Salary slips or dividend evidence
  • Foreign tax certificates
  • Bank statements for remittances
  • Prior year tax return (if any)
  • Purpose statement for TRC

Real-World Use Cases: Personal Income Tax Return — PND.91 (salary only)

Real-world scenarios where clients rely on this service every month, spanning individual, family, and corporate mandates.

Digital nomad residency planning

183-day scoping and DTA mapping to home country.

Corporate CIT filing

PND.50 annual + PND.51 semi-annual for BOI and non-BOI entities.

DTA relief in home country

TRC issued and legalised for withholding-tax reduction abroad.

Insurance and immigration proof of income

PND.91 certified copies for visa and financial evidence.

Alternative Paths for Personal Income Tax Return — PND.91 (salary only)

Three delivery paths are usually available. We select the option that balances cost, deadline pressure, and destination-authority preferences.

OptionProsCons
Self-file PND.90/91Cheapest, control over dataRisk of missing deductions and DTA relief
Full-service tax returnProfessional review, DTA optimisationHigher fee but typically saves tax
TRC + full DTA relief packBest for cross-border incomeAdds 30–45 days processing

FAQs about Personal Income Tax Return — PND.91 (salary only)

คำถามที่พบบ่อย

When is Thai personal income tax due?

31 March each year for salaried employees; corporate returns 150 days after fiscal year end.

Does Thailand tax foreign income?

Yes since 1 January 2024 when remitted to Thailand by Thai tax residents (183-day rule).

Can I file a Thai tax return from abroad?

Yes via e-Filing or through ILC as authorised representative.

Is a TRC accepted by all DTA partners?

Yes by all 61 DTA countries when combined with MFA + embassy chain.

Local Expert Insight

Expert perspective: Personal Income Tax Return — PND.91 (salary only)

The Personal Income Tax Return — PND.91 (salary only) files we see most often are ones the applicant filed themselves and got rejected for an outdated template or a passport-name mismatch — that's why we audit every document before touching translation.
กองบรรณาธิการ ILC
Legal Documentation Editorial Team

Cost ladder

Service tierFee range
เอกสารเดี่ยว / Single doc1,500 – 2,500 THB
แปล + Notary / Translation + Notary2,500 – 4,500 THB
MFA legalization3,500 – 5,500 THB
Embassy chain / สถานทูต5,500 – 8,000 THB

Timeline (Day 1 → Day N)

  1. Day 1Intake, document audit, written quote & timeline
  2. Day 2-3Certified translation + two-tier QA by NAATI/MoJ translators
  3. Day 3-4MFA Chaengwattana legalization queued & retrieved
  4. Day 5-7Destination embassy filing & EMS/DHL return to client

Case snapshot (anonymized)

A corporate client (name withheld) needed Personal Income Tax Return — PND.91 (salary only) on a tight embassy deadline. ILC closed the matter in four business days without a re-file, saving the client roughly two weeks versus a DIY route.

Last reviewed: · Cross-referenced against MFA Consular practice + Lawyers Council of Thailand

Free quote — LINE @NAATI · Tel 080-5578887

Contact us

A working guide to Tax Returns Letters in Thailand

Tax Returns Letters is treated as an evidence file, not a translation ticket. Our workflow begins with a documentary audit against the receiving authority's current rulebook — the same rulebook Thai MFA, foreign embassies in Bangkok, and Thai Immigration Bureau counters use — so acceptance criteria are baked in before any drafting starts. Every Tax Returns Letters matter is scoped by a senior specialist on LINE Official @NAATI or by email at ilc@thainotary.co.th before any file moves.

How the workflow runs end-to-end

The typical execution path is: intake → audit → certified translation → attorney jurat → MFA Chaeng Watthana submission → MFA collection → destination embassy submission → embassy collection → courier dispatch. Each checkpoint triggers a written status update on the client's chosen channel.

Who this service is for

Overseas law firms use the same intake as domestic clients but receive a bilingual case brief in English at every checkpoint, so partners in London, New York, Sydney, Hong Kong, or Frankfurt can bill and update their own end clients without needing a Thai-language intermediary on each thread.

Coverage, fees, and turnaround

Government stamps and embassy fees are paid on the client's behalf against an itemised invoice with the official government receipts attached — nothing is marked up beyond the disclosed service fee, and refunds of any unused pass-through cost are automatic at file close.

Quality assurance and confidentiality

Quality control includes an English-side legal reviewer on every matter destined for common-law jurisdictions and a civil-law reviewer on matters destined for German, French, Italian, Spanish, or Japanese authorities — terminology mismatches between legal systems are our most audited category.

Start your Tax Returns Letters matter today

Reach ILC on LINE Official @NAATI, email ilc@thainotary.co.th, or phone 080-5578887. Office hours are Monday to Sunday, 08:30 to 20:00 Bangkok time. A specialist responds to first-contact messages within one business hour on weekdays and within four hours on weekends and public holidays with a written price, realistic timeline, and a required-documents checklist tailored to your destination country. There is no charge for the initial consultation, and no obligation to proceed after receiving the quote — ILCearns repeat business by delivering the first Tax Returns Letters matter cleanly and on time, not by locking clients into open-ended retainers.

Local Expert Insight

Expert perspective: Tax Returns Letters

The Tax Returns Letters files we see most often are ones the applicant filed themselves and got rejected for an outdated template or a passport-name mismatch — that's why we audit every document before touching translation.
กองบรรณาธิการ ILC
Legal Documentation Editorial Team

Cost ladder

Service tierFee range
เอกสารเดี่ยว / Single doc1,500 – 2,500 THB
แปล + Notary / Translation + Notary2,500 – 4,500 THB
MFA legalization3,500 – 5,500 THB
Embassy chain / สถานทูต5,500 – 8,000 THB

Timeline (Day 1 → Day N)

  1. Day 1Intake, document audit, written quote & timeline
  2. Day 2-3Certified translation + two-tier QA by NAATI/MoJ translators
  3. Day 3-4MFA Chaengwattana legalization queued & retrieved
  4. Day 5-7Destination embassy filing & EMS/DHL return to client

Case snapshot (anonymized)

A corporate client (name withheld) needed Tax Returns Letters on a tight embassy deadline. ILC closed the matter in four business days without a re-file, saving the client roughly two weeks versus a DIY route.

Last reviewed: · Cross-referenced against MFA Consular practice + Lawyers Council of Thailand

คำถามที่พบบ่อย

What is Personal Income Tax Return — PND.91 (salary only)?

Personal Income Tax Return — PND.91 (salary only) — Annual PIT return for salaried employees (Sec. 40(1) only). Required by most embassies for visa applications.

Who is this for?

Employees earning salary only (no freelance/business/rental income)

Fees and timeline?

Free filing; certified copy THB 50/page; service from THB 2,000; File 1 Jan–31 Mar (extra month for e-Filing)

Legal basis?

Revenue Code Sec. 40(1), 56

Issuing authority?

Revenue Department

Required documents?

Tax ID/passport; 50 bis from employer; Allowance & deduction evidence

Procedure steps?

Gather 50 bis; Compute tax; e-File / branch; Refund or pay balance; Certified copy + translation

How are fees structured?

Filing free. Our service covers preparation, e-Filing, certified copy, and translation.

Cross-border / DTA notes?

Most Schengen consulates require last 6 months of payslips + last PND.91 with translation.

Rejection policy?

If rejection is due to a defect on our side, we redo and resubmit at no extra service fee (government fees excluded). Revenue Department / MFA / embassy discretion not guaranteed.

Go deeper on Tax document certification

Our advisory team has run these certification chains for 15+ years. Two references we keep updated for clients:

Not sure which route applies? Send us the scan — LINE @NAATI · 080-5578887 · ilc@thainotary.co.th

Documents usually required

  • Freshly issued original Thai civil or corporate record from the issuing office
  • Complete English translation of every page, with the translator's statement of accuracy
  • Copy of the document holder's passport or Thai national ID card
  • Power of attorney with ID copies of both parties if someone else files on your behalf

Common reasons a bundle is rejected

  • Residency certificates are issued for a specific tax year and cannot be reused.
  • Treaty claims require the article to be cited correctly on the form.
  • Spell every name exactly as it appears in the passport, across every document in the same bundle.

Prefer not to handle the chain yourself? Send the scans and we run every step for you, from translation to the final endorsement.

What clients typically use this for

  • Tax residency certificates
  • Double-tax treaty claims
  • Overseas audit and reporting

An advisor, not only a document processor

Before any work starts, our team assesses how many certification layers your document actually needs, which authorities are involved, and the correct order for the office you will really file with. One step out of order usually means restarting the whole bundle. More than 15 years of cross-border document work means we recognise how each authority rejects files and prevent it up front.

  • The certification route is matched to the receiving authority before work begins.
  • Rejection risks are checked, from name spelling to document validity windows.
  • The filing sequence is planned around the deadline you actually have.

Consult us at LINE @NAATI · 080-5578887 · ilc@thainotary.co.th

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