npm i easy-salary

import Salary from 'easy-salary';

const result = (new Salary({
    salary: 10000,
    // ... 其他配置
})).calculate();

// 传入的配置参数
interface Config {
    salary?: number; // 基础工资
    specialAdditionalDeduction?: number; // 每月专项附加扣除 租房扣除
    yearEndAwardsNumber?: number; // 年终奖月数
    yearEndAwards?: number; // 年终奖 0表示默认使用 年终奖月数
    insuranceAndFundBase?: number; // 五险一金计算基础，为上一年度平均薪资，默认为salary
    startingSalary?: number; // 个税起征点
    insuranceAndFundRate?: IInsuranceAndFund; // 五险一金个人部分
    insuranceAndFundRateOfCompany?: IInsuranceAndFund; // 五险一金公司部分
    extraBonus?: number | number[]; // 每月额外奖金
    housingFundRange?: IHousingFundRange; // 公积金计算上下限
}
interface IInsuranceAndFund {
    pension?: number; // 养老保险
    medicalInsurance?: number; // 医疗保险
    unemploymentInsurance?: number; // 失业保险
    injuryInsurance?: number; // 工伤保险
    maternityInsurance?: number; // 生育保险
    housingFund?: number; // 住房公积金
    supplementaryFund?: number; // 补充住房公积金
}
interface IHousingFundRange {
    min: number;
    max: number;
}

<script src="https://cdn.jsdelivr.net/npm/easy-salary/easy-salary.min.js"></script>
<script>
const result = (new window.Salary({
    salary: 10000,
    // ... 其他配置
})).calculate();
</script>

const levels = [
    {value: 36000, rate: 0.03, deduction: 0},
    {value: 144000, rate: 0.1, deduction: 2520},
    {value: 300000, rate: 0.2, deduction: 16920},
    {value: 420000, rate: 0.25, deduction: 31920},
    {value: 660000, rate: 0.3, deduction: 52920},
    {value: 960000, rate: 0.35, deduction: 85920},
    {value: 0, rate: 0.45, deduction: 181920},
];

const levels = [
    {value: 3000, rate: 0.03, deduction: 0},
    {value: 12000, rate: 0.1, deduction: 210},
    {value: 25000, rate: 0.2, deduction: 1410},
    {value: 35000, rate: 0.25, deduction: 2660},
    {value: 55000, rate: 0.3, deduction: 4410},
    {value: 80000, rate: 0.35, deduction: 7360},
    {value: 0, rate: 0.45, deduction: 15160},
];

calculateSalary({
    salary: 30000, // 月薪
    specialAdditionalDeduction: 1500, // 每月专项附加扣除 租房扣除
    yearEndAwardsNumber: 2, // 年终奖月数
    startingSalary: 5000, // 个税起征点
    insuranceAndFundRate: {
        pension: 0.08, // 养老保险 个人缴费费率为8%;
        medicalInsurance: 0.02, // 医疗保险 个人缴费比例为2%;
        unemploymentInsurance: 0.005, // 失业保险 个人缴费比例为0.5%;
        housingFund: 0.07, // 住房公积金 7%
        supplementaryFund: 0.05, // 补充公积金 5%
    },
})

{
    salaryAfterTax: [22747.5, 22747.5, 21750, 21575, 21575, 21575, 21575, 21575, 20900, 19900, 19900, 19900],
    totalSalaryAfterTax: 309930,
    awardsAfterTax: 54210,
    insuranceAndFund: housingFund: 2100,
    medicalInsurance: 600,
    pension: 2400,
    supplementaryFund: 1500,
    totalFund: 6750,
    totalHousingFund: 3600,
    unemploymentInsurance: 150,
    salaryTax: [502.5, 502.5, 1500, 1675, 1675, 1675, 1675, 1675, 2350, 3350, 3350, 3350],
    salaryPreTax: 30000,
    totalSalaryPreTax: 420000,
    awardsPreTax: 60000,
    awardsTax: 5790,
}