The baht did not sit still for a single week last month
If your clients pay you from abroad, July 2026 probably meant a different number in your bank account every single time.
- On 8 July the baht opened around 33.43 per US dollar, firming slightly as the dollar softened
- Between 13 and 17 July it slid to roughly 33.64, its weakest level in about 14 and a half months, tracking gold breaking below USD 4,000 an ounce
- On 20 July it opened at 33.68, with Middle East tension pushing money into the dollar as a safe haven
- On 30 July it opened back at 33.47 after the Fed held rates steady
- By 3 August the reference rate used in the local gold market was back around 33.33 to 33.35
Bank research desks were working with a range of roughly 33.00 to 33.90 for the month — a spread of about 2.5 to 3 percent.
That sounds trivial until you price it. A USD 3,000 project landing on a 33.64 day versus a 33.00 day is a gap of nearly THB 2,000. Two or three invoices a month and you are looking at a five-figure annual difference for exactly the same amount of work.
The broader picture is actually friendly to anyone earning in dollars — the baht is meaningfully weaker than it was at the start of the year. The thing to manage is the volatility, not the level.
The single most common misunderstanding
Income from a foreign client is not the same thing as foreign-sourced income.
If you are sitting in Thailand doing the work, and you deliver it to a client in Singapore, Tokyo or New York, that income is Thai-sourced under section 41 paragraph one of the Revenue Code. It is fully taxable in Thailand regardless of when the money reaches a Thai bank account, and regardless of how long it sits in PayPal, Wise or Payoneer.
The remittance rules that changed practice from 1 January 2024 are a different animal. They apply to income whose source is genuinely outside Thailand — work performed or investments held while you were abroad — and to people who spend 180 days or more in Thailand in the tax year.
And the widely reported proposal to exempt foreign income brought back within the same year or the following year? As of early August 2026 it has not appeared as an enacted royal decree. Do not build a tax plan on a draft.
No 50 tawi certificate means no credit waiting for you
Thai clients withhold 3 percent and hand you a certificate. At filing time, everything withheld across the year offsets the tax you owe, and plenty of freelancers end up with a refund.
Foreign clients do none of that. The money arrives in full, minus transfer fees, and nothing is sitting at the Revenue Department with your name on it. Freelancers whose income is mostly international are the ones most likely to be shocked by the number at filing time.
The fix is boring and it works: open a separate account and move a slice across the moment each payment lands. And remember that if your income falls under sections 40(5) to 40(8), the half-year PND 94 return is due 30 September.
How to record exchange rates so they survive a review
Three rules that are practical and defensible:
- If the money is converted to baht on arrival, book the actual baht amount credited. Do not recalculate it yourself.
- If you hold the foreign currency, record the income using the Bank of Thailand reference rate on the day you received it, and screenshot that day's rate into the same folder.
- Transfer fees, conversion spreads and platform commissions are deductible if you claim actual expenses. If you use the lump-sum deduction they change your real profit but not your tax.
Per job, keep four documents together: the invoice you issued, the transfer confirmation or payment advice, the conversion summary, and the statement line showing the credit. Assemble that habit now and March becomes a filing exercise instead of an archaeology dig.
VAT: the 1.8 million threshold counts foreign clients too
A lot of freelancers assume overseas revenue sits outside the threshold. It does not. The THB 1.8 million annual test counts all service revenue, wherever the client is.
What changes is the rate. Once registered, services consumed entirely outside Thailand can qualify for the zero rate — but you need evidence that consumption genuinely happened abroad. If part of the deliverable is used in Thailand, for instance a campaign that runs in the Thai market, that portion goes back to 7 percent.
Your payment rails changed this year
In March 2026 Wise became the first non-bank to receive five licences from the Bank of Thailand, and from 19 May 2026 it has operated as a local Thai entity, with PromptPay connected and the ability to hold and convert 40-plus currencies.
Read the fine print though. For personal accounts registered to a Thai address, transfers between two non-baht currencies may route through baht — USD to SGD becoming USD to THB to SGD — which means two conversions and a higher total cost. The change is rolling out progressively between March and October 2026. If you hold multiple currencies without converting each time, check the notices inside your own account before your next payout.
Still receiving by SWIFT? Correspondent and beneficiary bank fees usually come out of what your client sent, so state clearly on the invoice which side absorbs them.
A 30-minute checklist for this evening
- Add a validity line to your quotation template — this price holds until a specific date. Fourteen to thirty days is a reasonable norm.
- State the billing currency explicitly, and say who pays international transfer fees.
- Write your own conversion rule in advance. For example, convert 70 percent to baht on arrival and hold 30 percent in dollars against tools you already pay for in dollars. A rule set in advance beats guessing the direction of the currency each morning.
- Open a tax-holding account and move 20 to 25 percent of every foreign payment into it immediately, because no withholding credit is coming.
- Complete the four-document set for every international job billed this year, before the PND 94 deadline arrives.
You cannot control the currency. You can control pricing with an expiry date, setting tax aside on the day money lands, and keeping complete evidence per job. Those three habits are worth more than watching a chart every morning.
If you would like quotations, invoices, receipts and payment status for each job to live in one place — so filing season is retrieval rather than reconstruction — that is exactly the workflow MANA is built around for Thai freelancers.