Personal Income Tax Filing
(P.N.D. 90/91)
Tax calculation and filing for freelancers, online sellers, and salaried employees with multiple income streams. Plan your deductions to maximize returns. Easy processing—just send details via LINE.
- Accurate Tax Calculations
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- Maximum Deduction Planning
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- 100% Data Security

Filing Taxes is Easy
Complete & Accurate
No more worries about retroactive Revenue Department audits. Fully utilize your eligible deductions.
Who is this service for?
We simplify the complexity of handling different income types (Section 40(1) to 40(8)).
Salaried Employees (with side income)
Have a regular salary but also take outside jobs or sell items after work.
Freelancers / Independent Contractors
Graphic designers, programmers, product reviewers, brokers.
Online Sellers
Selling via Shopee, TikTok, Lazada, or invoicing through social media pages.
Investors / Landlords
Earning income from dividends, interest, or real estate rentals.
Stop worrying about taxes
and focus on making money.
Fear of Retroactive Revenue Audits
Many aren't sure which income needs filing, or they file under the wrong category risking fines. We check everything in detail.
Unaware of Deductions, Missing Savings
SSF, RMF, life insurance, home loan interest, or new government tax breaks. We calculate them all so you pay the least or get a refund.
Complicated Web Processes & Server Crashes
Just send us your 50 Tawi documents or total income summary. The SiamAccount team handles the data entry and submits it via e-Filing for you.
What You Will Get
- Accurate calculation and categorization of income (40(1) - 40(8)).
- Allocation of expenses (standard vs. actual) to minimize tax liability.
- Preparation and online submission of P.N.D. 90 or 91 forms.
- Delivery of the official Revenue Department receipt and filing summary for your records.
Easy... Just 3 Fingertip Steps
No travel needed. No document printing. Just take a photo and send it via LINE.
Send Data via LINE
Take a photo of your withholding tax certificates (50 Tawi) or sales summary. Let us know your personal deductions.
Team Calculates & Summarizes
Accountants calculate taxes, choose the most economical method, and send the summary for your approval.
e-Filing Submission
We submit the forms into the Revenue system and send the receipt and full documents back to you.
Transparent Pricing, Based on Complexity
Prices stated before work begins. No hidden fees.
*Prices above are for annual personal income tax filing (P.N.D. 90/91) only. It does not include monthly bookkeeping or VAT services for individuals.
