How to Write a Handwritten Will in Thailand (Step by Step)
- Aphiwat Bualoi
- Jan 21
- 4 min read
Many people want to write a will by themselves, but when it comes time to actually do it, confidence disappears. You may have read articles, seen sample clauses, or heard advice from friends—yet the real question is still the same: “If I write it myself, will it be valid?”
This blog post is here to make the process simple and practical. You will learn the key legal rule for a handwritten will in Thailand, what information you should prepare before you start, and a clear writing structure you can follow so your will is complete and easy to use later.
The Legal Rule You Must Know (Thai Civil and Commercial Code Section 1657)
A handwritten will in Thailand is valid only if it is written entirely by the person making the will. That includes every part of it—the text, the date, and the signature.
This is the core rule under Section 1657 of the Thai Civil and Commercial Code. If you type the will, if someone else writes it for you, or if part of it is printed and part is handwritten, you may create legal risk. For this type of will, the safest approach is simple: write everything yourself.
One more important detail: witnesses are not required for a handwritten will. That surprises many people, but it’s true for this specific form.
However, there is a common mistake that can cause problems later: edits and corrections. If you cross out words, erase a line, or rewrite a sentence, you must sign next to every correction. If you don’t, the corrected part may be treated as invalid.
Before You Write: Prepare This Checklist
Most will-writing mistakes happen because people start writing too fast and forget critical information. The best way to avoid errors is to prepare a checklist first. When your information is ready, writing becomes calm and clear.
1) Your personal details
Prepare your:
full name
ID number (or passport number)
address
2) Your assets (with clear identification)
Be specific. A will should not be vague. Prepare details such as:
Real estate: title deed number (Chanote) and property details
Bank accounts: bank name, account name, account number
Vehicles: brand, model, and license plate
Other assets: shares, funds, valuable items, collections, jewelry, etc.
3) Your beneficiaries (heirs)
For each person you want to receive assets, prepare:
full name
ID/passport number
relationship to you
address
4) Your executor (estate administrator)
Your executor is the person who will carry out your will after your death. Prepare:
full name
ID/passport number
address
5) Your debts (if any)
If you have loans or liabilities, list them clearly. This helps the executor manage payments properly.
6) “Everything else” clause (very important)
This is one of the most important parts of a will. It covers assets you forgot to list or assets you acquire later. Without this clause, your estate may become unclear and arguments can start.
You should clearly state who receives all remaining assets and how they should be divided (for example, equal shares or specific percentages).
How to Write the Will (A Simple Structure)
Once your checklist is ready, you can begin writing. Use plain paper and write clearly.
1) Title
Start with a clear title such as “WILL”.
2) Date
Write the full date (day/month/year).
3) Declare this is your last will
Write a sentence confirming that this is your final will, and that any previous wills are cancelled.
4) Identify yourself
Write your full name, ID/passport number, and address.
5) Distribute assets clearly
For each asset, write:
what it is
who receives it
enough details to identify it correctly
6) Appoint an executor
Name the executor and state that they have the authority to manage the estate and carry out the will.
7) Add the “everything else” clause
State who receives any remaining assets not clearly listed.
8) Signature at the end
Sign your name at the bottom. Many people also write the date again near the signature as a final confirmation.
Funeral Wishes: Include or Separate?
If you have wishes about funeral arrangements or ceremonies, you can include them in the same document. Some people prefer to write those wishes in a separate note for convenience. Either approach is fine, but the key is clarity—make it easy for your family to follow.
When You Should Talk to a Lawyer
A handwritten will is a helpful tool, but it is not always the best solution for every situation. If you have:
many assets
business ownership
a second marriage or blended family
foreign family members
a risk of disputes among heirs
…then professional advice can prevent costly problems later.
Final Thought
A handwritten will can be legally valid in Thailand if you follow the core rule: write everything yourself, date it, and sign it properly. Most people can do it—but success depends on preparation and clarity.
If you want a will-writing checklist or you’re not sure how to structure your asset distribution, you can contact our office for guidance. Planning early is always better than leaving your family to deal with confusion—or conflict—later.
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