65 lines
1.1 KiB
Go
65 lines
1.1 KiB
Go
package utils
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import (
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"time"
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)
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// 一些计算
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// ComputeIndividualIncomeTax 计算个人所得税
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func ComputeIndividualIncomeTax(income float64) float64 {
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if income <= 800 {
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return 0
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}
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if income <= 4000 {
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income = income - 800
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}
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// 实际纳税金额
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if income > 4000 {
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income = income * 0.8
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}
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// 税率、速算扣除数
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var taxRate, quickDeduction float64
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if income <= 20000 {
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taxRate = 0.2
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quickDeduction = 0
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} else if income <= 50000 {
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taxRate = 0.3
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quickDeduction = 2000
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} else {
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taxRate = 0.4
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quickDeduction = 7000
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}
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incomeTax := income*taxRate - quickDeduction
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return incomeTax
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}
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// CalculateAge 计算年龄
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func CalculateAge(birthdate string) (int, error) {
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// 解析出生日期字符串
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layout := "2006-01-02"
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birthTime, err := time.Parse(layout, birthdate)
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if err != nil {
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return 0, err
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}
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// 获取当前时间
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now := time.Now()
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// 计算年龄
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years := now.Year() - birthTime.Year()
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// 如果今年的生日还没到，年龄减一
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if now.Month() < birthTime.Month() || (now.Month() == birthTime.Month() && now.Day() < birthTime.Day()) {
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years--
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}
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return years, nil
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}
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