TikTok has been fined VND 880 million (US$33,400) by the National Competition Commission for violations of data collection rules in Vietnam, according to Dau Tu Kinh Te.
The regulator said TikTok lacked a way for users to opt in or out of data use for advertising, that it applied unlawful standard contract terms, and that it provided incomplete information that could mislead consumers.
Authorities also found the company had insufficient complaint and dispute-resolution procedures for vulnerable consumers.
TikTok was not alone, either.
Local messaging app Zalo was also fined VND 810 million (US$30,700) for similar violations.
This follows on from authorities issuing a formal summons of VNG Corporation, Zalo’s parent company, after complaints over its data collection practices on the messaging platform, earlier this month, as reported by Vietnamnet.
Specifically, the National Competition Commission, a part of the Ministry of Industry and Trade, said it had received a surge of reports concerning Zalo’s revised terms of service, which required users to either consent to expanded data collection or see their account deleted within 45 days.
This all comes as TikTok continues to expand in Vietnam’s e-commerce space.
TikTok expansion plans in Vietnam
Earlier this year, it was also reported by Dau Tu Kinh Te, that TikTok was seeking approval to establish three new companies inside Ho Chi Minh City’s new International Financial Centre.
This expansion would see its logistics services handling around 1–2 billion orders a year, a domestic TikTok Payment service for its 45 million users, and a digital commerce unit processing more than US$10 billion in annual transactions.
This announcement, however, came amid broad concerns among sellers over TikTok Shop fee increases.
Vietnam seller resentment over TikTok fee hikes
Indeed, TikTok Shop has recently come under fire for introducing a new 3,000 VND (US$0.11) order-handling fee on every transaction, Dan Tri reported back in October.
Earlier this year it was announced that from October 27 the fee would apply, regardless of order size or quantity, tightening margins for sellers, which they claimed were already tight after a hike in commission rates of up to 300 percent.
It was particularly irksome in that the fee would even apply to orders later refunded or returned.
This has, however, not stopped the short video app from increasing its market share.
Tiktok e-commerce market share in Vietnam
Specifically, TikTok Shop expanded its share of Vietnam’s e-commerce market in 2025 to roughly 41 percent, according to Dau Tu Kinh Te citing a report from Vinventures.
This made it the second biggest e-commerce firm in the country after Shopee which commands about 56 percent, according to Dau Tu Kinh Te.
The same report found, TikTok Shop revenue grew 69 percent year on year, while Shopee growth slowed to about 4 percent, with TikTok Shop sellers increasing to about 267,000. Shopee’s active sellers, conversely, dropped 32 percent to around 210,000.