Withholding Tax Calculator

Withholding tax calculation has never been this easy!
The most convenient withholding tax calculator for freelancers, contractors, developers, designers, consultants, and anyone with business income.

* Key Features
Bidirectional Calculation
Contract Amount → Net Amount Calculation
Net Amount → Contract Amount Reverse Calculation
Automatic result linking when switching tabs

- Calculation History Management (NEW!)
Automatic saving of up to 50 calculation records
Favorite feature to bookmark important calculations
Tap saved records to apply them instantly
Complete history management and deletion functions

- Convenience Features
Quick reset with amount clear button
Direct navigation to desired tab from history
Automatic keyboard management for smooth input

- Accurate Tax Calculation
Automatic 3% basic tax rate calculation
Automatic 0.3% local income tax calculation
Total 3.3% withholding tax at a glance

* Intuitive UI/UX
Clean and easy-to-read design
Real-time thousand-separator formatting
Color-coded sections for easy identification
Secure local storage with no permissions required

* Perfect For
- Freelance developers and designers
- Contract project workers
- Consulting professionals
- Writers and lecturers with royalty income
- Business income earners subject to withholding tax

* How to Use
Contract Amount Mode: Enter total contract amount to calculate net receivable amount after tax
Net Amount Mode: Enter desired amount to calculate required contract amount including tax
Tab switching automatically carries calculation results for continuous calculations

* Utilizing Calculation History:
- Tap the calculation history button to view past calculations
- Use the star icon to add important calculations to favorites
- Tap any saved amount to automatically switch to the corresponding tab and apply it
- Use the amount clear button to easily reset input values

* Special Features
- Smart Tab Switching: Calculation results automatically become input values for the next tab
- Real-time Formatting: Automatic thousand-separator formatting during input
- Intuitive Colors: Blue (contract amount), Purple (net amount), Orange (tax) for clear distinction
- Precise Calculation: Accurate calculations down to decimal points with no errors
- Intelligent History Management: Automatically saves calculation results and organizes them with favorites
- One-tap Application: