【2025】27470! The secrets behind the code are revealed, you must know this knowledge

In Taiwan, every time a new year comes, human resources-related systems, Payroll Management, even system developers, must face Labor and Health Insurance Adjustments to key data such as "basic salary". Especially the number "27470" - representing the year 2024 Minimum salary range Code has become a variable that many engineers and HR personnel cannot ignore when writing annual programs. Today, let us uncover the logic and secrets behind this string of numbers and see how the "code" affects every link in salary settlement!

Key figures and policy highlights for 2025

The Origin of Codename "27470"

What is "27470"? This is the standard for the "minimum insurable wage range" for full-time workers starting in 2024, and it also became an important constant in program and system settings last year. As the policy changes again, this string of numbers will be replaced by new numbers in 2025. The various associations and follow-up effects are the key points that software designers and HR personnel must pay attention to.

main Policy Updates At a Glance

Remark:Starting from 2025, "27470" will be officially replaced by "28590", and the labor insurance premium rate will also be increased to 12.5%.

Labor and Health Insurance Level Table and Impact Analysis

Why is "27470" so important?

In all human resources and payroll systems, changes in the minimum insured wage policy will directly affect:

• Employee withholding amount
• Company covers employer costs
• Labor insurance and retirement contribution figures
• Calculation related program parameters/logic for each year

The number "27470" corresponds to the key setting value in the program constant and step table. If "27470" is not updated during the current year conversion, it will cause calculation errors, violations of law or mispayment.

System settings and annual switching

Many human resources systems will write the "year-level" correspondence into a setting file or data table to facilitate automatic switching and painless upgrades every year. For example, the following table:

Every adjustment means that Taiwan’s human resources system must “change codes” at the beginning of the year to confirm that “28590” will replace “27470” starting in the new year.

Full linkage from policy to backend program

Impact from the perspective of HR and engineers

For HR, grade adjustment will affect the insurance premiums and actual wages of all employees; for software engineers, it is a matter of simultaneous correction of variables and logic. Here are the important elements you need to consider:

• Key settings such as rates and tiers need to be configurable and automatically switched annually.
• "27470" should be accessed via configuration files/tables and not hard-coded into the program.
• The actual insured salary must be checked against the grade table and cannot be based solely on "input salary".

PHP code configuration and design suggestions

Typical configuration files:

$insuranceConfig = [ 2024 => [ 'min_wage' => 27470, 'labor_insurance_rate' => 0.12, ... ], 2025 => [ 'min_wage' => 28590, 'labor_insurance_rate' => 0.125, ... ] ];

Common mistakes and foolproof design:

• "27470" is hard-coded in the logic, and cannot be switched automatically
• The calculation did not refer to the grade table, and the grade rounding comparison was not done
• No automatic testing was performed during the annual switch, resulting in the remnant of old logic

Design suggestions:

• Use the year and level as index points, and only need to change the settings every year without interrupting the service
• With automated testing, we deploy testing and verification before new policies are implemented every year
• Combined with database to control annual grade data, enhancing maintenance flexibility

Comprehensive calculation method of labor insurance, health insurance and labor retirement

Detailed list of burdens of each unit

Practical formula

Taking 2025, no dependents, and a monthly salary of $30,300 as an example, the calculation is as follows:

Key: Every time the tiers and rates are adjusted, the benchmark figures in the formula must be adjusted synchronously! (e.g. "27470")

System maintenance and automatic upgrade practices

Core Recommendations

• The core levels such as 27470 are designed as "dynamic variables" and only need to adjust a single setting every year.
• Formula maintenance is concentrated on Service or Utility objects to reduce repeated writing.
• Annual changes are accompanied by test cases to ensure that the formula is correct.

Automated test case list

1. When salary = 27470, the result of switching to 2024/2025 must fully comply with the announced grade range algorithm
2. Assuming the salary is 27500, does the "grade range comparison" correctly fall on "27470" or "28590"?
3. After switching settings, API output will comply with the new annual policy specifications
4. There is an annual switching prompt on the front end to avoid mixing old data

A must-have for engineers: Guard Condition application

Recommended in PHP/system design:

• Mandatory salary floor and ceiling rationalization inspection (27470-45800)
• Enter salary to find the grade automatically, instead of calculating directly based on the input value
• Condition selection and testing based on the annual dimension

Example Logic

if ($salary < $insuranceConfig[$year]['min_wage']) { $salary = $insuranceConfig[$year]['min_wage']; } if ($salary > 45800) { $salary = 45800; }

In this way, "27470" and "28590" in 2025 can be switched automatically and correctly.

Final Reminders and Transition Tips

With the arrival of 2025, "27470" will officially come to an end. Whether you are an HR, human resources manager, system administrator or programmer, you must check whether the relevant system settings, database level codes and formulas are immediately mapped to the new policy to avoid abnormal deductions for all employees due to the retention of old values!

Behind each seemingly simple "code 27470" actually affects the salary accuracy of tens of thousands of companies and millions of employees. When you perform your next system upgrade or data maintenance, don’t forget to check again whether you have “welcomed the new year”!

Continuous pursuit of innovation and change is the real key to professional maintenance quality for engineers and HR. By mastering the details, systems and human resource operations will always be ahead of the times!