What is withholding tax? What new business owners need to know in 2026
Withholding tax is a tax that the law requires the payer of income to deduct from the amount payable to the recipient and remit directly to the Revenue Department. If you are starting a new business in Chiang Mai or a nearby province, understanding this is at the heart of running a lawful business and reducing the risk of penalties from the Revenue Department. If you are looking for help with the paperwork, the accounting services in Chiang Mai team at YMTD is ready to advise you so that your business runs smoothly throughout 2026.
Why understanding withholding tax matters to your business
Many people see tax as a hassle, but in fact withholding tax is a way of keeping cash flow and tax obligations in order. If you do not withhold tax, or withhold the wrong type, your company becomes liable for that tax on behalf of the recipient, together with hefty interest and surcharges. A good tax management system lets you plan your taxes efficiently, and if you want a professional to take care of this, tax planning with us saves you time and gives you confidence that every baht is correct under the law.
Common withholding tax rates for 2026: an easy summary table
In 2026, withholding tax rates still follow the Revenue Department's principles. Business owners should remember these frequently used rates:
- Transport fees: withhold 1%
- Advertising fees: withhold 2%
- Service fees (e.g. contract work): withhold 3%
- Rent (real property): withhold 5%
- Professional fees (e.g. accounting, legal): withhold 3%
For business owners who want accurate calculations, our accounting services in Chiang Mai team is ready to help classify each type of expense so you withhold the right amount every time.
The workflow and filing of withholding tax
The process starts with receiving the invoice and checking that the type of expense is correct. Tax is then withheld and a withholding tax certificate (50 bis certificate) is issued to the recipient. Finally, the tax is remitted to the Revenue Department by the 7th of the following month (or the 15th if filed online). Following the steps systematically not only makes your business look professional but also builds confidence among your trading partners. If you want to focus on growing the business, using the audit and document services from YMTD will take a great deal of the back-office burden off your shoulders.
Common mistakes in withholding tax
The points where new business owners most often slip up are:
- Not withholding on everything: Forgetting to withhold tax on some items the law specifies
- Entering the wrong tax type code: Leading to an incorrect filing that has to be corrected later
- Filing after the deadline: Resulting in a surcharge of 1.5% per month
- Incomplete 50 bis certificates: Unclear details in the document mean the recipient cannot use it for their own tax credit
Preventing these mistakes is not difficult. All it takes is a good accounting system and a team of specialists from accounting services in Chiang Mai as your adviser at hand.
Frequently asked questions
What should I do if I forgot to withhold tax?
Contact the recipient to arrange remitting the tax afterwards, or, if the payment has already been made, the company must accept that tax burden and remit it together with the actual surcharge as quickly as possible.
Is a 50 bis certificate required every time?
Yes, it must be issued every time tax is withheld at source, so that the recipient can use it as evidence for a tax credit or for their year-end tax filing.
Do I have to withhold tax when hiring a freelancer?
Yes. If the payment is a service fee or contract work paid to an individual and exceeds 1,000 baht, you must withhold 3% under the Revenue Department's conditions.
Summary
Understanding withholding tax is not only about complying with the law; it builds a solid foundation for your business in 2026. If you want an expert adviser in Chiang Mai, do not let the numbers hold back your business's growth. Contact YMTD Accounting Partner Chiang Mai. We are ready to take care of you from the start through to professional tax planning.
For more information contact: Tel 081-542-3019 / LINE: @ymtd or visit our website for more services at all articles
