The 103Tax Way
What Really Matters for Individual Bookkeeping Is Consistency
Plenty of firms will file a return well once. What sets 103Tax apart is what comes after — we run regular monthly checkups, flag issues before they become problems, and never stop managing your books for as long as your business runs.
Regular checkups — we catch red flags every month
At every monthly close, we review your expense-to-revenue ratio and how your tax burden is trending, so we're the first to spot signals that could lead to an audit or a penalty.
Advance alerts — we tell you before the deadline is close
VAT (July/January) and comprehensive income tax (May) deadlines, plus deductions that are easy to miss, are flagged with plenty of lead time — not at the last minute.
Check your next filing deadlineOngoing management — we don't stop after a single filing
At many firms, the relationship ends the moment a filing is done. We keep tracking your business through monthly reports and prepare your next tax-saving move ahead of time.
Tax Savings by the Numbers
The Real Difference Regular Checkups Make
These figures are reconstructed from actual consultation cases — amounts that would have been missed without a monthly checkup.
Sole proprietor · Restaurant
₩1.8M saved per year
Found unclaimed delivery-app commission expenses
Sole proprietor · Cafe
₩1.6M avoided
Timed the switch from simplified to general taxpayer status
Freelancer · One-person business
₩1.2M in 3.3% withholding refunded
Reflected equipment, subscription, and home-office expenses
Individual Business Bookkeeping
Leave Your Tax Filing to a Professional
Individual businesses must file VAT twice a year and comprehensive income tax once a year. Filing on your own often means paying more tax than necessary due to missed expenses or blown deadlines. With tax accountant Kwon Ji-hyun managing it directly, the tax savings typically outweigh the bookkeeping fee.
Bookkeeping vs. Not Keeping Books — the Tax Gap Is Real
A business required to keep double-entry books faces a 20% penalty for not doing so. Keeping books almost always results in a much lower tax bill than the simplified expense-rate method, because actual expenses can be claimed in full.
Monthly bookkeeping
Monthly recording of income and expenses, receipt management, and tax-invoice processing
VAT filing (twice a year)
First period (July) and second period (January) VAT filing and refund processing
Comprehensive income tax filing (once a year)
May comprehensive income tax filing, with expense optimization and tax-saving strategy
Withholding tax & payroll filing
Employee payroll processing, 4 major insurances, and withholding tax filing on your behalf
Service Scope
What's Included in the Bookkeeping Service
Bookkeeping vs. No Bookkeeping
See at a glance why professional bookkeeping is the better choice
| Category | Bookkeeping with 103Tax | Filing on Your Own, No Books |
|---|---|---|
| Expense claims | Full actual expenses reflected | Simplified expense rate (many expenses missed) |
| Tax reduction | Optimal tax-saving strategy applied | No knowledge of tax-saving methods |
| Filing accuracy | Reviewed by a professional, error-free | High risk of errors and penalties |
| Deadline management | Automatic reminders and filing on your behalf | You have to track it yourself |
| Tax audit support | Professional accompaniment | You have to respond alone |
Frequently Asked Questions
Before You Consult, Check These First
Use our free tools to estimate your tax and filing deadline in advance
Tax Calculator
Enter your revenue and expenses to get an estimated comprehensive income tax and VAT figure
Filing Deadline D-Day
Select your business type and see how many days remain until your next filing deadline
"Is This a Deductible Expense?"
Search any confusing expense and see instantly whether it qualifies
Related Reading
When to Outsource Bookkeeping to a Tax Accountant
Which is better — self-bookkeeping or outsourcing — and when to make the switch.
Simplified Ledger vs. Double-Entry Bookkeeping — Which Applies to You?
How to determine your bookkeeping obligation based on industry revenue thresholds.
How Much More Tax Do You Pay Without Bookkeeping? — The Non-Bookkeeping Penalty, Explained
A worked example of how much your tax burden actually increases without books.
No Books, but Still Have to File — Standard vs. Simplified Expense Rate
The difference between estimated-filing methods used when you have no ledger.
Why Choose 103Tax
Bookkeeping Isn't Something to Hand to Just Anyone
Your contact never changes
We don't hand your account off to staff — tax accountant Kwon Ji-hyun personally handles bookkeeping, filing, and consultations, so the person managing your business already knows its full history.
You know the fee before you sign
So there's never a surprise quote after a consultation, we publish our bookkeeping and filing fees in advance.
Ask questions any time
No need to call or book a visit — message us on KakaoTalk and get a real-time answer.