Kwon Ji-hyun, Certified Tax Accountant
Key Services
Your first consultation comes with no obligation — check out our tax calculators and industry diagnostic tools first
Customer Types
We provide tailored tax services suited to your industry and business type. Select the type that matches you for detailed guidance.
From Seoul metro area startup tax reductions to government subsidy linkage — tax planning for your very first step, designed to cut early-stage costs
R&D center tax credits, venture company certification, stock options — specialized tax expertise that truly understands IT businesses
One-stop bookkeeping support for converting from sole proprietorship to corporation, new incorporation, and risk management as your business grows
Complex sales settlement across Coupang, Smart Store, and your own site, plus VAT and income tax filing with nothing missed
From 3.3% freelancer refunds to expense handling and income tax savings tailored to solo creators and knowledge-service providers
Meticulous monthly bookkeeping that catches money leaking out every month, plus optimized VAT and income tax filing
Services
Personalized tax services designed directly by Kwon Ji-hyun
Beyond accurate books — our lead tax accountant personally reviews your finances every month and finds tax savings you didn't know existed.
From gifting startup capital to structuring corporate shares and real estate transactions, we design safe, reliable plans to preserve your assets.
We thoroughly research government incentives and tax reduction programs by industry, and legally minimize the tax you owe.
No monthly bookkeeping contract needed. We handle just the May comprehensive income tax filing, accurately, every time.
Lead Tax Accountant
The less tax you pay, the more you keep. Kwon Ji-hyun personally handles tax matters across a wide range of industries — sole proprietors, individual business owners, corporations, and new startups — offering every client an optimal tax-saving plan.
Why 103tax
It starts with the fact that the lead tax accountant handles your case personally — not a junior staff member
| Typical Tax Firms | 103tax | |
|---|---|---|
| Your contact | A staff member is assigned; direct communication with the lead tax accountant is difficult | Kwon Ji-hyun, the lead tax accountant, personally handles everything from consultation to bookkeeping |
| How we communicate | Mostly phone and email, with slow response times | Real-time communication via KakaoTalk; urgent inquiries answered same-day |
| Pricing | You only find out after a consultation | Bookkeeping and service fees are published on our website up front |
| Specialization | Handled the same way regardless of industry | Tailored tax planning by industry — IT, startups, developers, and more |
| First consultation | Sometimes just a formality, or comes with a fee | Genuine first consultation, plus free tax calculators and industry diagnostic tools |
Process
Four simple steps, with nothing to worry about
Book easily online or via KakaoTalk
Kwon Ji-hyun personally reviews your situation and presents a strategy
Bookkeeping or filing work starts immediately after signing
Regular reports and proactive guidance on tax-saving issues
Tools
Use tools designed by Kwon Ji-hyun to understand your situation, and see real case studies
Answer 4 questions to get tax service and saving-tip recommendations matched to your industry. Takes just 3 minutes.
Start DiagnosisEasily estimate your comprehensive income tax and VAT. Just enter your revenue and expenses to see the result instantly.
Calculate NowReal tax-saving success stories by industry — sole proprietors, corporations, freelancers, and more. See the before-and-after numbers.
View CasesAirPods, coffee shops, cars... search any confusing expense and get an instant answer on whether it's deductible and why.
Search NowEnter your revenue to compare the real difference between 3.3% freelancer status, simplified taxpayer, and general taxpayer.
Compare NowJust select your business type to instantly see how many days remain until your next filing deadline.
Check NowSearch your industry code to instantly check the 2025 standard and simplified expense rates. Covers all 1,612 industry codes published by the National Tax Service.
Look Up RatesIf you're a 3.3% freelancer, check who needs to file, deadlines, and refund eligibility, all on one page.
Check NowTen major tax laws explained in plain language, with practical commentary and checklists added to 246 key statutory provisions.
ExploreAddress
1115, SkyValley Tower 2, 1142 Beoman-ro, Geumcheon-gu, Seoul (08595), South Korea
Phone
Business Hours
Weekdays 10:00 AM – 7:00 PM
Closed Saturdays, Sundays, and public holidays
KakaoTalk
@103tax (Accepting inquiries 24/7)