Should I Register a .co.th or .com Domain for My Thai Business?

.co.th costs a fixed ฿856/year including VAT and requires a business registration document or equivalent. It signals Thai business operation clearly. .com is available immediately with no document requirement, but many foreign registrars use promotional first-year pricing that rises significantly on renewal. If you are already registered as a business entity, .co.th is simpler to manage long-term. If you have no business registration yet, .com or .in.th are your options.

Why Is the First-Year Domain Price Different from the Renewal Price?

It is a marketing tactic by foreign registrars. The first year is priced as a promotion to attract sign-ups, with the actual recurring cost revealed at renewal. For example, Namecheap listed .com at approximately ฿10.98 in the first year but ฿18.48 on renewal as of 16 September 2026. THNIC, which manages .co.th and .in.th, charges the same price every year. When comparing providers, always look at the renewal price, not the first-year promotional rate.

Can an Unregistered Business Register a .co.th Domain?

No. THNIC requires a company registration certificate, VAT registration, or trade registration document to register .co.th. However, individuals without a business registration can register .in.th using a national ID card only, at the same ฿856/year price per THNIC policy. If you are not yet registered as a business but want a Thai-domain extension, .in.th is the appropriate option.

What Happens If I Forget to Renew My Domain?

The domain is suspended and enters a redemption period. For THNIC-managed domains (.co.th, .in.th), recovering a domain in redemption costs ฿1,712 including VAT — approximately double the normal annual renewal fee. If the domain is left unredeemed long enough, it may eventually become available for anyone else to register. Set a reminder at least 30 days before expiry to avoid this.

How Many Years Should I Register My Domain for at Once?

Registering for multiple years at once saves the hassle of annual renewal and can be marginally cheaper per year. THNIC's 5-year .co.th registration is ฿4,013 including VAT, which works out to less than ฿803 per year versus ฿856 annually. If you are uncertain about the domain name itself, one year is fine while you decide. Once you are committed to the name, multi-year registration is the more practical choice.

Who Should Hold the Domain Account for a Business?

The business owner, or a business email address that the owner controls directly. Never the developer's personal email. If the relationship with the developer changes, regaining access to a domain registered under their personal account can be extremely difficult. Keep all purchase receipts in the business name as proof of ownership. This rule applies regardless of how trustworthy the developer seems at the start of the project.

Where Should You Register a Domain? Real Prices in 2026 and the Renewal Trap Nobody Warns You About

I once heard a story from a restaurant owner. He found a shophouse in a great location and the landlord offered the first year's rent at a very low price — so low he signed the lease immediately without asking what year two would cost. When the first year ended, the new bill arrived. The number he saw looked nothing like what he'd been told. The landlord hadn't lied about anything. The first year's price was real. But nobody had clearly stated the second year's price from the start.

This sounds completely unrelated to websites, but it's exactly the same mechanism as registering a domain name. I've met many business owners who chose a domain based on the first price they saw when signing up, then were surprised when the second year's invoice arrived. This article isn't going to teach you how to choose a memorable domain name — that's been covered well elsewhere at What Is a Domain Name? How to Choose a Name That's Easy to Remember. This article covers just one thing: actual pricing, where to register, and who should hold the account.

Before reading further, take three minutes to check your own situation. If your business already has a website, find the receipt or renewal notification email from the most recent domain renewal and compare it to the first invoice when you initially registered. If you can't find it or aren't sure, ask whoever manages your website: whose name is the domain registered under, which email address, and how much does the annual renewal cost? The answers to those two questions will tell you immediately whether your business is facing the same situation this article describes.

Two Doors That Thai Businesses Have to Choose Between

When registering a domain name, Thai businesses have two main options. The first is a Thai-nationality domain like .co.th, registered through THNIC or THNIC-authorized agents. The second is an international domain like .com, registered through an overseas registrar. Neither path is right or wrong — they just have different terms, and that's what creates such a wide gap in long-term pricing.

.co.th — Requires Identity Verification Before You Can Register

According to the registration policy THNIC has published (checked September 16, 2026), registering a .co.th or .ธุรกิจ.ไทย domain isn't just a matter of paying and getting it immediately. You must first submit identity verification documents — at least one from THNIC's specified list. The documents most businesses already have include: a company certificate, VAT registration certificate (Phor.Phor. 20), trade registration certificate (Tor.Kor. 0401 or Por.Kor. 0401), or a certificate of trademark registration. Additional documents are accepted as well, such as Phor.Phor. 01 and a memorandum of association, which THNIC specifies must be signed by an authorized officer. The full list is in the policy page. Per THNIC's guidelines, the domain name should also correspond to the registered organization's name — you can't choose an arbitrary name unrelated to your legal entity name. The advantage is that if you already have a properly registered business, whether a company or just a trade registration, you likely already have these documents on hand and won't need to gather new ones.

If you don't yet have any legal entity or trade registration, there's still an option: .in.th. According to the THNIC registration policy, this category is open for any individual to register with just a national ID card — no business documents required at all. It's suitable for shops or freelancers who haven't registered their business yet. The pricing is in the same table as .co.th: 856 THB for both the first year and renewal years.

.com — Instant Registration, No Documents, but More Complex Pricing

On the .com side, there's no identity verification at all. Enter a credit card and your domain is registered immediately. Much easier to access. But the price you see at signup is typically not what you pay every year. I checked the pricing page of Namecheap — one of the international registrars commonly used by Thai businesses (checked September 16, 2026) — and found that .com for the first year is priced at $10.98 USD, which the page itself labels as a Sale price for new registrations only. The renewal price starting from year two is $18.48 USD — nearly double. The same page also notes that ICANN charges an additional $0.20 USD per year on top of the listed price. These figures are what the registrar states in USD — they don't include the currency conversion fee your credit card may charge on top.

This pricing model isn't unique to Namecheap. Most international registrars use a similar mechanism: set the first year's price low to attract sign-ups, then the real price shows up at renewal. The exact figures for each registrar change frequently — always check the current pricing page of the registrar you're considering at the time you actually register. Don't trust numbers from any article, including this one. Always verify at the registrar's site before making a decision.

The Real Numbers, Side by Side

On the .co.th side, the price THNIC has published is more straightforward. The first year and every renewal year cost the same: 856 THB (VAT included). There's no promotional first-year price that jumps in year two. Registering multiple years at once gives a slightly lower per-year price — 2 years at 1,605 THB, 3 years at 2,408 THB, 5 years at 4,013 THB (all prices include VAT). If your domain expires and you forget to renew until it needs recovery, the recovery fee is 1,712 THB — nearly double the standard renewal.

On the .com side at Namecheap, the verifiable figures are: first-year Sale price at $10.98 USD, renewal from year two at $18.48 USD — stated by the registrar in USD only, with no Thai VAT applied since it's a foreign company. If you're in Thailand's tax system and need to issue proper tax invoices, this is a separate topic to discuss with your accountant. .co.th issues Thai-format electronic receipts or tax invoices directly; .com from overseas does not.

The first-year price you see when searching for a domain name is not the price you pay every year. Always open the registrar's renewal pricing page and check it carefully before making a decision.

So Why Not Just Register at the Cheapest Price You Can Find?

I completely understand the reasoning behind wanting the cheapest option — it's not wrong at all, especially when starting a business where every baht counts. But the point worth thinking about separately is that the cheapest first-year price and the total cost over the domain's life are two different things. If your business intends to use this domain for five or ten years, the true renewal price matters far more than a first-year promotional price. And if your business already has a trade registration or company, the .co.th path with its stable annual price may end the conversation more simply than having to track the promotional code or expiry timing of a .com domain every year.

Why Registering Correctly from Day One Pays Off Long-Term

A good domain name that someone else has already registered is simply unavailable to you — no matter how much you're willing to pay. That's why waiting to "register later when you're really ready" carries more risk than most people realize. Another equally important point: if you take the right path from the start, the documents you prepare once for a .co.th registration can be used for every renewal going forward — you won't have to track down new documents every year. Compare that to chasing discount codes or promotional pricing from an international registrar every time you're approaching the renewal date, which is work that repeats indefinitely.

The Minimum to Have Ready Before You Register

Before making a final decision, prepare three things. First, a list of two or three backup domain names in case your first choice is already taken. Second, your identity verification documents if you're going the .co.th route, or a credit card that can make international payments if you're going the .com route. Third — and more important than most people realize — decide in advance which email address will be the domain account owner. This email is the only channel the registrar uses to verify your identity when you need to make changes or transfer the domain in the future.

A 30-Day Plan Before You Register Your Domain Correctly

Week 1 — Check what you already have: If you already have a website, find out whose name the domain is registered under, which email address, and how much you pay per year. Compare against what the registrar currently publishes and see if the figures match.
Week 2 — Choose your path: If you already have a trade registration or company, gather the documents and choose the .co.th path. If you don't have any legal entity yet, consider .in.th or .com based on your business situation.
Week 3 — Register under the right name: Use your business email address, not a personal email belonging to an employee or developer. Keep the receipt or tax invoice as proof of ownership.
Week 4 — Set up a renewal reminder: Note the expiry date on your calendar at least 30 days in advance, with a budget based on the actual renewal price — not the first-year price you remember.

Check Every Year When the Invoice Arrives

After registering, make it a yearly habit to open the renewal invoice and compare it against the registrar's currently published price on their website. If the numbers diverge significantly, ask clearly what additional fees have been added. For .co.th, the price should remain close to stable each year as THNIC publishes. For .com, if the price creeps up every year with no explanation, that's a signal to check the registrar's current pricing page — renewal prices can be adjusted at any time without much advance notice.

The Question That Matters More Than Price: Who Holds This Account?

The thing I want to emphasize most in this article isn't the price numbers at all — it's the question of whose name your domain is registered under. Many business owners let their web developer or marketing team register the domain for them from the start, using the developer's own email as the account owner. When everything is going smoothly, this is no problem. But if the relationship with that developer ever ends badly, the question of who has the right to modify or transfer the domain becomes an immediate crisis. This is exactly the question I covered in detail in Seven Real Pantip Posts About Developers Who Took a Deposit and Disappeared — Plus How to Protect Yourself Before Paying. Businesses that register the domain in their own name from day one, using their own business email, have already eliminated this problem — regardless of how any future relationship changes.

The domain is just one starting point. Another decision that goes hand in hand with it is the hosting that stores your actual website data. If you're about to sign a contract with a hosting provider, there are details on how different quote types differ and what you should ask before signing at How to Read a Hosting Quote Before You Sign.

If you're not yet sure whether your business needs its own website at all, read Do Online Stores Need a Website? The Pros and Cons Every Shop Should Know first.

Closing Thoughts

Going back to the shophouse story: the lesson isn't that promotional pricing is bad. A low first-year price is still a real price. The point is to know the second year's number before you sign — and to make sure you're signing in your business's own name, not someone else's. A domain works exactly the same way: the first-year price isn't the whole story, and the name on the account matters more than the number itself.

In TumWebSME packages starting at 79,000 THB (paid once), we handle domain registration and renewal for our clients — always in the client's name, never in our team's name. View full package details at our packages page. If your business is about to register a new domain, or you're wondering whose name your current domain is registered under, feel free to message us and tell us your situation. We'll help you figure out what to do next.