프리랜서노트 - 3.3% 계산기·종합소득세·수입 관리

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About this app

It is a free calculator. There are no filing services or fees.

If you record your income after the 3.3% deduction, Freelancer Note calculates in advance whether you will receive a refund or pay additional comprehensive income tax next May.

■ 3.3% Income Recording

· Automatically calculates net income and withheld taxes simply by entering the client, amount, and payment date

· 3.3% Business Income, 8.8% Other Income, No Withholding Tax, Manual Input

· Separately record deposits and scheduled deposits to view amounts to be received at a glance

· Monthly income and income share by client

■ May Comprehensive Income Tax Refund & Payment Estimate

· Calculate next May's Comprehensive Income Tax in advance based on this year's records

· Compare which is more advantageous: the Simple Expense Ratio or Simplified Bookkeeping (Actual Expenses)

· Shows the calculation process step-by-step, from Income − Expenses → Deductions → Tax Rate → Local Income Tax

· Increases accuracy by including National Pension contributions and dependents

■ 3 Types of Calculators (Directly without Internet)

· 3.3% Calculator: Pre-tax → Net Income, Net Income → Pre-tax Reverse Calculation (Includes 8.8% Other Income)

· VAT Calculator: Supply Price ↔ Total Amount

· Comprehensive Income Tax Calculator: Load from my records or directly Input

■ Notifications to ensure you don't miss anything

· May Comprehensive Income Tax filing period

· Money to be received with a missed deposit date

· January & July VAT filing, November interim prepayment (Turn on notifications only for what you need)

■ What makes it convenient

· Use immediately without registration; income information is saved only on your mobile phone

· Easy to compare amounts by client with Hometax payment statements

· Record expenses and compare them with simplified ledgers

· Backup files keep records intact even if you change phones

· Share this year's income summary as an image

※ Calculation results are estimates for reference only; the actual tax amount may vary depending on other income (employment, pension, etc.) or deductions and exemptions. Freelancer Note does not provide tax agency or filing services; you can file directly on Hometax or Sontax.
Record your income after 3.3% tax deduction, and we'll instantly tell you your estimated comprehensive income tax refund and payment for May. Fee-free calculator.
Updated on
Nov 8, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location, App activity and 2 others
  • This app may collect these data types
    Location, App activity and 2 others
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

프리랜서노트 첫 버전입니다.
· 3.3% 수입 기록과 받을 돈 관리
· 5월 종합소득세 환급·납부 예상 (단순경비율 vs 간편장부 비교)
· 3.3%·부가세·종합소득세 계산기
· 신고 기간·입금 예정일 알림, 백업, 수입 요약 공유