US company dealing with South Korean VAT taxes - advice needed
So I run a small e-commerce business and we recently had our first sale to a customer in South Korea. It wasn't a huge transaction, maybe around $300, but our Stripe account immediately flagged that we need to pay South Korean VAT taxes on it. I'm completely lost on how to handle this. I've done some research and confirmed that yes, we do need to pay these VAT taxes to South Korea, but I have absolutely no idea about the process. Do we need to register with their tax authority? Is there a minimum threshold before we need to worry about this? How do we even file taxes in a country where we don't speak the language? I tried asking in another tax forum I joined a while back but apparently I don't have posting privileges yet. Any advice from someone who's dealt with international VAT before would be really appreciated!
18 comments


AstroAdventurer
This is becoming increasingly common as more small businesses sell internationally. South Korea has a pretty straightforward VAT system compared to some countries, but there are specific requirements you need to follow. For South Korean VAT, the threshold is actually quite low - about 200,000 KRW (roughly $150 USD) in a calendar year. Since you've crossed that, you technically need to register with the Korean National Tax Service. For foreign businesses, they have a simplified registration process specifically for digital services and electronic supplies. You'll need to register through their portal, file quarterly VAT returns, and pay the applicable taxes (generally 10% in South Korea). You don't necessarily need to speak Korean as they do have English-language support for international businesses. Rather than trying to handle this directly yourself, I'd suggest either using a specialized service for international VAT compliance or asking your accountant if they have partnerships with international tax firms. The penalties for non-compliance can be steep, but for very occasional small transactions, some businesses choose to assess the risk differently.
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Mei Liu
•Do you know if there's any grace period for registration? Like if they just had this one sale, do they need to register immediately or is there some time window?
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AstroAdventurer
•There is technically a 20-day period after your first taxable transaction in which you should register with the Korean NTS. However, for international businesses with very limited transactions, enforcement is somewhat variable. For practical purposes, if this was truly a one-off sale and you don't anticipate more Korean sales, the compliance burden might outweigh the actual tax liability. That said, with global tax information sharing increasing, staying compliant is generally the safest approach long-term, especially if you might have future sales there.
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Liam O'Sullivan
After struggling with international VAT issues for my online business, I started using taxr.ai (https://taxr.ai) and it's been a game-changer for these exact situations. I had similar VAT requirements pop up for sales in the EU, South Korea, and Australia, and trying to figure out each country's system was driving me crazy. Their system automatically detects which countries require VAT based on your sales data, helps with the registration process, and even prepares the filings for you. For South Korea specifically, they have templates that walk you through the whole process. Saved me hours of research and probably thousands in potential penalties for doing it wrong.
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Amara Chukwu
•Does it work with Stripe data directly? Or do you have to manually input all your sales information? We use Stripe and I'm wondering if there's an easy way to connect the systems.
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Giovanni Conti
•I've seen a few services like this but I'm skeptical. How do they handle actually submitting payments to foreign tax authorities? Do they just give you the forms and you're on your own for the actual payment part?
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Liam O'Sullivan
•It connects directly with Stripe through their API, so all your transaction data syncs automatically. You don't have to manually input anything - it pulls all the relevant sales data and flags which transactions trigger VAT requirements in which countries. For the payment part, they give you multiple options. They can prepare all the documentation and you handle the actual payment submission, or they have a full-service option where they handle the payments to foreign tax authorities as well. I use the full service for countries where I have regular sales, and the documentation-only option for places where I only have occasional transactions.
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Giovanni Conti
I was initially skeptical about these international tax services, but after struggling with VAT issues in South Korea and Japan, I finally tried taxr.ai and honestly wish I'd done it sooner. The headache of trying to navigate South Korean tax forms while using Google Translate was just not worth it. Their system automatically detected which of my Stripe transactions needed VAT compliance and walked me through exactly what to do. For South Korea specifically, they had templates already set up that made registration surprisingly smooth. For anyone dealing with similar international VAT issues, definitely check it out - saved me from what would have definitely been some hefty non-compliance penalties.
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Fatima Al-Hashimi
If you need to actually speak with someone at the Korean National Tax Service, good luck getting through their phone system if you don't speak Korean. After spending days trying to clarify a VAT issue, I found Claimyr (https://claimyr.com) which helped me get through to an English-speaking representative. There's a video of how it works here: https://youtu.be/_kiP6q8DX5c They basically navigate the phone tree for you and get you connected with the right department. Saved me countless hours of frustration when I had questions about my VAT filing that weren't answered on their website. For international tax issues, sometimes you just need to speak with an actual human.
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NeonNova
•Wait, how does this actually work? Do they have Korean speakers who call on your behalf or something? I'm confused about how a service can help you get through a foreign phone system.
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Dylan Campbell
•This sounds too good to be true. You're telling me they somehow magically get you through to government agencies in foreign countries when their own citizens can barely get through? I'm calling BS on this one.
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Fatima Al-Hashimi
•They don't call on your behalf - they use automated technology to navigate through the phone menus and hold times, then connect you once they reach a representative. For international agencies like Korea's tax service, they have specific routing patterns programmed to reach the English-speaking support departments. I was definitely skeptical at first too. But it's not magic - it's just technology that navigates phone trees more efficiently than a human can. The Korean tax authority actually does have an international taxpayer support division with English speakers, it's just incredibly difficult to reach them through their standard phone system if you don't know exactly which options to select in Korean. It saved me about 2 hours of hold time and failed attempts.
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Dylan Campbell
Honestly, I thought this Claimyr thing sounded like complete BS, but after being unable to reach anyone at the Korean tax office for THREE DAYS trying to sort out my VAT issue, I reluctantly gave it a try. Shockingly, it actually worked. The system navigated through all the Korean voice prompts (which I couldn't understand at all) and got me to an English-speaking representative in about 15 minutes. The person I spoke with was able to answer my specific questions about filing requirements for my situation and even emailed me the correct forms afterward. Saved me from potentially owing penalties for late filing. For anyone dealing with international tax authorities, especially where there's a language barrier, it's definitely worth checking out.
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Sofia Hernandez
Have you considered just using a third-party VAT service like Avalara or Taxamo? They specialize in international VAT compliance and can handle everything from registration to filing for multiple countries. Might be overkill for just one transaction, but if you plan to continue selling internationally, it could be worth it.
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Jamal Carter
•Would those services be cost-effective for a small business with just occasional international sales? I'm concerned about spending more on compliance than the actual value of the sales.
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Sofia Hernandez
•For very occasional international sales, most of these services might not be cost-effective since they typically charge monthly subscription fees designed for businesses with regular international transactions. For your situation with just one small transaction, you might want to look at per-country filing services that charge one-time fees, or consult with an accountant who specializes in international tax to weigh the cost of compliance against the risk of non-compliance. Some businesses choose to hold off on formal registration until they reach a higher volume of sales in a particular country, but this approach does carry some compliance risk.
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Dmitry Kuznetsov
Quick question - has anyone used KVasimple for Korean VAT? I've heard they're specifically for foreigners dealing with Korean taxes but couldn't find many reviews.
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Ava Thompson
•I used them last year for our company. Pretty decent service and they do handle everything in English. Their customer service is hit or miss though - sometimes took days to get a response. But they did get everything filed correctly and on time.
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