Loan Calculator in Python with Source Code

The Loan Calculator in Python is developed in python programming language and it is a desktop application. This system is created using tkinter and graphical user interface. The Loan Calculator is free to download the open source code. The task record contains a python content ( loan_calculator.py). Likewise, this task makes a helpful path for the client to increase a thought of how to perform advance computations.

The task is for the client advantageous, to assist them with getting some answers concerning the regularly scheduled installments on a particular credit. This venture is for monetary ascertaining to make sense of the credit’s customary regularly scheduled installment, with all out installment and the absolute intrigue. Also, the client needs to pay those installments over the span of the advance.

Discussing the highlights of this loan calculator framework, this python application is intended to compute regularly scheduled installments to expect for a straightforward credit. Thus, you can basically enter the credit sum, the term(years) and financing cost in the content fields and snap ‘ascertain advance’ button. It isn’t equipped for dealing with a wide range of exemptions.

Loan Calculator in Python with Sour...

Loan Calculator in Python with Source Code 2020 Free Download

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Before you start creating this Loan Calculator in Python, make sure that you have PyCharm IDE installed in your computer.

Steps on how to create Loan Calculator in Python

Loan Calculator in Python with Source Code

Step 1: Create a project name.
First when you finished installed the Pycharm IDE in your computer, open it and then create a “project name” after creating a project name click the “create” button.
Step 2: Create a python file.
Second after creating a project name, “right click” your project name and then click “new” after that click the “python file“.
Step 3: Name your python file.
Third after creating a python file, Name your python file after that click “enter“.

Step 4: The actual code.
This is the actual coding on how to create Loan Calculator System in Python, and you are free to copy this code and download the full source code given below.

Importing Tkinter Module

Tkinter is the standard GUI library for Python. Python when combined with Tkinter provides a fast and easy way to create GUI applications.

from tkinter import *

This module is for the design of window and title

In the code given below, which is for the design of window and title used in the system.

def __init__(self):
# creating the window here
window = Tk()

# set the title
window.title('Loan Calculator System')

This module is for the background color

In the code given below, which is for the background color used in a system

window.config(background='navajowhite')

This module is for the label

In the code given below, which is for the label used in a system, the label for annual interest rate, numbers of years, loan amount, monthly payment and total payment.

Label(window, text='Annual Interest Rate', bg='navajowhite', borderwidth=4).grid(row=1, column=1, sticky=W)

Label(window, text='Numbers of Years', bg='navajowhite', borderwidth=4).grid(row=2, column=1, sticky=W)

Label(window, text='Loan Amount', bg='navajowhite', borderwidth=4).grid(row=3, column=1, sticky=W)

Label(window, text='Monthly Payment', bg='navajowhite', borderwidth=4).grid(row=4, column=1, sticky=W)

Label(window, text='Total Payment', bg='navajowhite', borderwidth=4).grid(row=5, column=1, sticky=W)

This module is for the entry widgets

In the code given below, which is for the entry widgets used in a system. Such as entry of annual interest, years, amount, monthly payment, and total payment.

self.Int_for_Annual = StringVar()
Entry(window, textvariable=self.Int_for_Annual, justify=RIGHT).grid(row=1, column=2, sticky=E)

self.yrs = StringVar()
Entry(window, textvariable=self.yrs, justify=RIGHT).grid(row=2, column=2, sticky=E)

self.amt = StringVar()
Entry(window, textvariable=self.amt, justify=RIGHT).grid(row=3, column=2, sticky=E)

self.mon_payment = StringVar()
Label(window, textvariable=self.mon_payment).grid(row=4, column=2, sticky=E)

self.tot_payment = StringVar()
Label(window, textvariable=self.tot_payment).grid(row=5, column=2, sticky=E)

This module is for the button

In the code given below, which is for the button for Compute Loan.

computation = Button(window, text='Compute Loan', command=self.Payment_Computation).grid(row=6, column=2, sticky=E)

This module is for the total payment

In the code given below, which is for the computation of total payment of loan.

def Payment_Computation(self):
month = self.Getting_Payment_in_Monthly(
float(self.amt.get()),
float(self.Int_for_Annual.get()) / 1200,
int(self.yrs.get()))

self.mon_payment.set(format(month, '10.2f'))

tot = float(self.mon_payment.get()) * 12 * int(self.yrs.get())

self.tot_payment.set(format(tot, '10.2f'))

This module is for the monthly payment

In the code given below, which is for the computation of monthly payment.

def Getting_Payment_in_Monthly(self, Amount_Loan, mon_rate_interest, no_of_yrs):
# compute the monthly payment.
month = Amount_Loan * mon_rate_interest / (1
- 1 / (1 + mon_rate_interest) ** (no_of_yrs * 12))

Complete Source Code of Loan Calculator

from tkinter import *

class loanCal():

def __init__(self):
# creating the window here
window = Tk()

# set the title
window.title('Loan Calculator System')



# set the background color
window.config(background='navajowhite')

# creating the labels
Label(window, text='Annual Interest Rate', bg='navajowhite', borderwidth=4).grid(row=1, column=1, sticky=W)

Label(window, text='Numbers of Years', bg='navajowhite', borderwidth=4).grid(row=2, column=1, sticky=W)

Label(window, text='Loan Amount', bg='navajowhite', borderwidth=4).grid(row=3, column=1, sticky=W)

Label(window, text='Monthly Payment', bg='navajowhite', borderwidth=4).grid(row=4, column=1, sticky=W)

Label(window, text='Total Payment', bg='navajowhite', borderwidth=4).grid(row=5, column=1, sticky=W)

# Create the Entry Widgets
self.Int_for_Annual = StringVar()
Entry(window, textvariable=self.Int_for_Annual, justify=RIGHT).grid(row=1, column=2, sticky=E)

self.yrs = StringVar()
Entry(window, textvariable=self.yrs, justify=RIGHT).grid(row=2, column=2, sticky=E)

self.amt = StringVar()
Entry(window, textvariable=self.amt, justify=RIGHT).grid(row=3, column=2, sticky=E)

self.mon_payment = StringVar()
Label(window, textvariable=self.mon_payment).grid(row=4, column=2, sticky=E)

self.tot_payment = StringVar()
Label(window, textvariable=self.tot_payment).grid(row=5, column=2, sticky=E)

# CREATING BUTTONS
computation = Button(window, text='Compute Loan', command=self.Payment_Computation).grid(row=6, column=2, sticky=E)

window.mainloop()

# compute the total payment.
def Payment_Computation(self):
month = self.Getting_Payment_in_Monthly(
float(self.amt.get()),
float(self.Int_for_Annual.get()) / 1200,
int(self.yrs.get()))

self.mon_payment.set(format(month, '10.2f'))

tot = float(self.mon_payment.get()) * 12 * int(self.yrs.get())

self.tot_payment.set(format(tot, '10.2f'))

def Getting_Payment_in_Monthly(self, Amount_Loan, mon_rate_interest, no_of_yrs):
# compute the monthly payment.
month = Amount_Loan * mon_rate_interest / (1
- 1 / (1 + mon_rate_interest) ** (no_of_yrs * 12))
return month;


loanCal()

Downloadable Source Code

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Conclusion

In this Loan Calculator in Python with Source Code is free to download. Loan Calculator contains the admin side. This task makes a helpful path for the client to increase a thought of how to perform advance computations. This project is good for the student who want to learn python programming because this project contains a Graphical User Interface (GUI) and a users friendly. It is easy to understand and manipulate this project and use for education purpose only.

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Inquiries

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