VAT
VAT affects every profit and margin figure a shop reports, and it comes down to three separate questions. DataGlass keeps them separate because they genuinely are.
| Question | Where it is answered |
|---|---|
| Is this seller registered for VAT? | The shop — Settings → VAT |
| Is this particular product taxed? | The product — its VAT exempt switch, or Bulk edit (Excel) |
| Did this cost come with a tax invoice? | The shop, overridable per product |
Registration belongs to the shop
VAT registration is a property of the selling entity, not of a product. If you run one shop under a registered company and another under your own name, only the first charges VAT — even when both sell exactly the same products.
To set it, open the shop, click the Settings icon in the shop header, and go to VAT. Turn on VAT registered.
Nothing is written to your products when you do this. Each shop's registration is read at the moment its numbers are calculated, so setting one shop never moves what another shop reports — even for a product the two of them share.
You need permission to view financial data to change these settings.
Exempt products
A registered seller is not necessarily taxed on everything. Some goods are exempt or zero-rated.
By default every product in a registered shop is treated as taxed. To mark one exception, open the product and turn on VAT exempt in the breakdown settings menu; it saves to the product and applies to all of its variants. To mark many at once, use Bulk edit (Excel) on the products page: download the sheet, set the VAT-exempt column for the products concerned, and upload it back.
An exempt product is never taxed and never yields an input-VAT credit, whatever the shop is set to. The VAT panel tells you how many products are currently marked exempt.
Claiming input VAT
Claim input VAT answers a different question: can you reclaim the VAT sitting inside the money you spend?
In Thailand you can only reclaim VAT on a purchase when the supplier issued you a tax invoice. Many small suppliers do not. Turning this on tells DataGlass to reclaim that VAT, which raises the profit it reports for you; leaving it off means the VAT inside your costs is treated as part of the cost.
Wages are never claimable, so the labour part of your costs is excluded whatever this is set to.
If only some of your suppliers issue invoices, set the exceptions per product in Bulk edit (Excel). A product with no setting of its own follows the shop.
Input VAT can only be claimed by a registered seller, so this switch is unavailable while VAT registered is off.
Prices already include VAT
A price on Shopee, Lazada or TikTok is what the buyer pays, and in Thailand that figure already contains the VAT. So the tax on a sale is taken out of the price rather than added on top.
On a ฿1,070 sale you owe ฿70 — that is 7% of the ฿1,000 you actually keep, which works out to 1,070 × 7/107 of the price. It is not 1,070 × 7%, which would be the answer if buyers were going to pay ฿1,144.90 instead.
Showing numbers with or without VAT
Financial views have a separate Include VAT toggle, sitting right above VAT exempt in the same menu. That one only changes what you are looking at — it saves nothing. It has no effect on a shop that is not registered, because there is no VAT to include.
Why this matters
A shop marked registered when it is not understates profit by deducting VAT you never owed; the reverse overstates it. Claiming input VAT you hold no invoices for overstates it again. If your shops sit under different legal entities, set each one separately rather than assuming they match.