年収手取り計算機

Description

💰 Annual Take-Home Salary Calculator - Full Version

【🎯 Overview】
This is the most comprehensive annual take-home salary calculation app in Japan, suitable for all working styles, whether you are an employee, sole proprietor, or corporate executive. It is fully compliant with the latest tax system for 2025, accurately calculates income tax, resident tax, and social insurance premiums, and instantly calculates your actual take-home amount.

【✨ Main features】

🏢 Fully compatible with three working styles
- Company employees and civil servants: Salary income deduction, welfare pension, health insurance
- Self-employed: Blue return deduction, national health insurance, national pension, personal business tax
- Corporate executives: Corporate tax, salary income tax on executive compensation, total actual take-home pay

📊 Accurate tax calculation
- Income tax rate in accordance with the 2025 tax system (7 levels from 5% to 45%)
- Accurate calculation including special income tax for reconstruction (2.1%)
- Resident tax (10% income tax + flat rate)
- Basic deduction of 480,000 yen, dependent deduction of 380,000 yen/person applied

💼 Detailed deduction calculation
- Salary income deduction: Step-by-step deduction according to annual income (550,000 yen to 1,950,000 yen)
- Blue return special deduction: 650,000 yen (self-employed)
- Social insurance premium deduction: Employee pension, health insurance, employment insurance (approximately 15%)
- National Health Insurance: Two-step calculation of income tax rate + flat rate
- National pension: 16,980 yen per month (estimated for 2025)

🏛️ Corporate tax calculation
- Reduced tax rate for small and medium-sized enterprises: 15% for amounts under 8 million yen, 23.5% for amounts over 8 million yen
- Large enterprise tax rate: 23.5% flat rate
- Local corporate tax: 10.4%
- Comprehensive calculation including prefectural and municipal taxes
- Simulation of optimal allocation of executive compensation and corporate profits

【🆕 New features】

📚 Calculation history function
- Automatically save past calculation results
- History list organized by date and type
- Redisplay past calculations with one tap
- Easily compare income due to changes in work style
- History data export function

🎨 Theme customization
- Switch between light and dark themes
- Color accent selection
- Dark mode support that is easy on the eyes
- Screen display according to user preferences

【💡 Recommended for:

👔 Company employees
- Compare annual income when changing jobs
- Check the impact of raises and bonuses on take-home pay
- Combine with side job income
- Optimize dependent deductions

💼 Self-employed and freelancers
- Compare blue and white tax returns
- Check the tax savings effect of expense accounting
- Consider the timing of incorporation
- Pre-calculate national health insurance premiums

🏢 Managers and executives
- Set the optimal amount for executive compensation
- Balance adjustment between corporate tax and income tax
- Benefits of utilizing the reduced tax rate for small and medium-sized enterprises
- Check the impact of tax rates on capital amount

【📈 Display calculation results】

Display detailed breakdown
- Annual take-home pay and monthly take-home pay
- Display taxes and insurance premiums by item
- Automatic calculation of effective tax rate
- Detailed breakdown of deductions

Special display for corporations
- Separate display of corporate tax, etc. and individual executives
- Calculate the total effective take-home pay
- Effective tax burden rate on sales
- Optimal allocation proposals for corporations and individuals

【🔧 Easy-to-use design】

Intuitive interface
- Easy operation with tab switching
- Automatic validation of input items
- Easy-to-understand guide with error messages
- Speedy one-tap calculation

Supports detailed settings
- Tax rates by prefecture (Tokyo, Osaka, etc.)
- Setting the number of dependents
- Various deductions and insurance options available
- Small and medium-sized enterprises determined by capital amount

【📱 Technical specifications】

- Native app made with Flutter
- Supports offline operation
- High-speed calculation engine
- Secure local data storage
- Compatible with Android 5.0 and above

【🛡️ Privacy and security】

- Input data is stored only on the device
- No internet connection required
- No external transmission of personal information
- Fully offline operation

【💯 Calculation accuracy】

Fully compliant with the 2025 tax system
- Uses tax rate tables published by the National Tax Agency
- Accurate application of various deductions
- Comprehensive calculation including special income tax for reconstruction
- Proper reflection of local tax rates

With this app, you can accurately simulate your income when making important decisions in life, such as changing jobs, going independent, or starting a corporation. It automates complex tax calculations and helps you choose the best way to work.

Download now and find out your true take-home income!