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Calculate bonus for employee based on salary & service years

Introduction

In many organizations, employee bonuses are calculated based on their years of service and current salary.

For example, a simple bonus policy might be:

Years of Service	Bonus Percentage
Less than 3 years	5%
3 to 5 years	10%
6 to 10 years	15%
More than 10 years	20%

Bonus can be calculated as:

Bonus Amount = Salary × Bonus %

Net Pay = Salary + Bonus Amount

Method 1:

C Program: Calculate Bonus Based on Salary & Years of Service

#include <stdio.h>
 
int main() {
    float salary, bonus, totalPay;
    int years;
 
    // Input employee details
    printf("Enter basic salary: ");
    scanf("%f", &salary);
    printf("Enter years of service: ");
    scanf("%d", &years);
 
    // Determine bonus percentage based on years of service
    if (years < 3) {
        bonus = salary * 0.05;
    }
    else if (years >= 3 && years <= 5) {
        bonus = salary * 0.10;
    }
    else if (years >= 6 && years <= 10) {
        bonus = salary * 0.15;
    }
    else {
        bonus = salary * 0.20;
    }
 
    // Calculate total pay
    totalPay = salary + bonus;
 
    // Output
    printf("\n----------------------------\n");
    printf("Employee Bonus Calculation\n");
    printf("----------------------------\n");
    printf("Basic Salary       : ₹ %.2f\n", salary);
    printf("Years of Service   : %d\n", years);
    printf("Bonus Amount       : ₹ %.2f\n", bonus);
    printf("Net Pay (with Bonus): ₹ %.2f\n", totalPay);
    printf("----------------------------\n");
 
    return 0;
}

Output

 
OUTPUT 1 :
Enter basic salary: 50000
Enter years of service: 2

----------------------------
Employee Bonus Calculation
----------------------------
Basic Salary       : ₹ 50000.00
Years of Service   : 2
Bonus Amount       : ₹ 2500.00
Net Pay (with Bonus): ₹ 52500.00
----------------------------

OUTPUT 2 :
Enter basic salary: 60000
Enter years of service: 8

----------------------------
Employee Bonus Calculation
----------------------------
Basic Salary       : ₹ 60000.00
Years of Service   : 8
Bonus Amount       : ₹ 9000.00
Net Pay (with Bonus): ₹ 69000.00
----------------------------

OUTPUT 3 :

Enter basic salary: 45000
Enter years of service: 12

----------------------------
Employee Bonus Calculation
----------------------------
Basic Salary       : ₹ 45000.00
Years of Service   : 12
Bonus Amount       : ₹ 9000.00
Net Pay (with Bonus): ₹ 54000.00
----------------------------

Explanation

The user enters the basic salary and years of service.
The program decides the bonus percentage according to the given slab.
bonus = salary × bonus_percentage.
totalPay = salary + bonus.
All details are displayed in a structured format.

Method 2:

C Program: Calculate bonus and apply tax deduction to get the Net Salary after Bonus and Tax

Introduction

In real-world payroll systems:

Bonus is calculated based on years of service.
Tax is deducted based on total income (salary + bonus).

Here’s a sample tax slab (can be modified):

Total Pay (Salary + Bonus)	Tax Rate
Up to ₹50,000	0%
₹50,001 – ₹1,00,000	10%
₹1,00,001 – ₹2,00,000	20%
Above ₹2,00,000	30%

C Program: Bonus & Tax Deduction Calculation

#include <stdio.h>
 
int main() {
    float salary, bonus, totalPay, tax, netPay;
    int years;
 
    // Input
    printf("Enter basic salary: ");
    scanf("%f", &salary);
    printf("Enter years of service: ");
    scanf("%d", &years);
 
    // 1. Bonus Calculation
    if (years < 3) {
        bonus = salary * 0.05;
    }
    else if (years >= 3 && years <= 5) {
        bonus = salary * 0.10;
    }
    else if (years >= 6 && years <= 10) {
        bonus = salary * 0.15;
    }
    else {
        bonus = salary * 0.20;
    }
 
    totalPay = salary + bonus;
 
    // 2. Tax Calculation (based on totalPay)
    if (totalPay <= 50000) {
        tax = 0;
    }
    else if (totalPay <= 100000) {
        tax = totalPay * 0.10;
    }
    else if (totalPay <= 200000) {
        tax = totalPay * 0.20;
    }
    else {
        tax = totalPay * 0.30;
    }
 
    // 3. Net Pay Calculation
    netPay = totalPay - tax;
 
    // 4. Display
    printf("\n--------------------------------------------\n");
    printf("        Employee Salary Slip (With Tax)     \n");
    printf("--------------------------------------------\n");
    printf("Basic Salary          : ₹ %.2f\n", salary);
    printf("Years of Service      : %d\n", years);
    printf("Bonus Amount          : ₹ %.2f\n", bonus);
    printf("Total Pay (Before Tax): ₹ %.2f\n", totalPay);
    printf("Tax Deduction         : ₹ %.2f\n", tax);
    printf("Net Pay (After Tax)   : ₹ %.2f\n", netPay);
    printf("--------------------------------------------\n");
 
    return 0;
}

Output

 
OUTPUT 1 :
Enter basic salary: 40000
Enter years of service: 2

--------------------------------------------
        Employee Salary Slip (With Tax)     
--------------------------------------------
Basic Salary          : ₹ 40000.00
Years of Service      : 2
Bonus Amount          : ₹ 2000.00
Total Pay (Before Tax): ₹ 42000.00
Tax Deduction         : ₹ 0.00
Net Pay (After Tax)   : ₹ 42000.00
--------------------------------------------

OUTPUT 2 :
Enter basic salary: 80000
Enter years of service: 6

--------------------------------------------
        Employee Salary Slip (With Tax)     
--------------------------------------------
Basic Salary          : ₹ 80000.00
Years of Service      : 6
Bonus Amount          : ₹ 12000.00
Total Pay (Before Tax): ₹ 92000.00
Tax Deduction         : ₹ 9200.00
Net Pay (After Tax)   : ₹ 82800.00
--------------------------------------------

OUTPUT 3 :

Enter basic salary: 150000
Enter years of service: 12

--------------------------------------------
        Employee Salary Slip (With Tax)     
--------------------------------------------
Basic Salary          : ₹ 150000.00
Years of Service      : 12
Bonus Amount          : ₹ 30000.00
Total Pay (Before Tax): ₹ 180000.00
Tax Deduction         : ₹ 36000.00
Net Pay (After Tax)   : ₹ 144000.00
--------------------------------------------

Explanation

Step 1: Bonus is calculated based on years of service.
Step 2: Total pay = salary + bonus.
Step 3: Tax rate is applied depending on total pay.
Step 4: Net pay = total pay − tax.
All details are displayed in a clean salary slip format.

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Decision Making Programs in C

Calculate bonus for employee based on salary & service years

Introduction

Method 1:

C Program: Calculate Bonus Based on Salary & Years of Service

Output

Explanation

Method 2:

C Program: Calculate bonus and apply tax deduction to get the Net Salary after Bonus and Tax

Introduction

C Program: Bonus & Tax Deduction Calculation

Output

Explanation