Questions tagged [finance]

Finance is for anything related to currency, payment systems, credit card number validation, etc.

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votes
0answers
21 views

Histogram building in python, specific on one variable [closed]

Below is the dataset im using to build the histogram. I want to build a histogram which specifies on the 'EL' variable and where we have the frequency on the y-axis. Is it possible to group the 'EL' ...
10
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4answers
13k views

Simple budget program

I've decided to start working on a budget application for the purposes of enhancing my Python skills. In its current form this program takes given expenses and income and tells the user whether they ...
4
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2answers
93 views

Calculating the necessary contribution to attain a savings goal with compound interest

This is a problem set from the MIT online course : Suppose you want to set a particular goal, e.g. to be able to afford the down payment in three years. How much should you save each month to ...
4
votes
2answers
172 views

Pulling financial data via IEX Cloud API

I am pulling some financial data from the IEX Cloud API. Since it is a paid API w/ rate limits, I would like to do this as efficiently as possible (i.e., as few calls as possible). Given that the <...
3
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2answers
429 views

JavaScript interest rate calculator

As I am still new to web development, refactoring my code is still something that gives me some trouble. I would really appreciate it if someone could look over the Javascript for an interest rate ...
0
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2answers
789 views

Income tax calculator [closed]

I've just started coding and have written a program to calculate your tax to be paid. Is there anywhere where I can improve this? ...
1
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1answer
30 views

Return timeframes relevant to just-elapsed time period (financial/trading context)

I am writing trading software, and have written this utility function. Its purpose is to return a list of timeframes relevant to the just-elapsed time period. "Timeframe" here means bar or candle ...
6
votes
2answers
180 views

Asynchronous IBAN API with validation

I am working on an iban api which is about saving the iban of some members after (iban validation) in a database. The code is split between Domain (entities, behaviour for iban validation), Database ...
4
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1answer
61 views

Simple income/expenses accounting program

I've decided to start working on a budget application for the purposes of getting started on Rust. In its current form this program takes given expenses and income and tells the user whether they have ...
0
votes
0answers
191 views

A simple tax calculator

I have created a tax calculator using text fields and functions that would calculate the tax amount based on the bracket that the income falls into and shows the amount you have saved based on ...
7
votes
2answers
18k views

Bank account number validation in IBAN format

I wrote a JavaScript function for validating bank account numbers in IBAN format for my own joy. Could you have a look if you don't see any obvious mistakes or places for improvement? ...
5
votes
2answers
22k views

Cash-withdrawal from an ATM

I'm seeking review comments (design, performance, etc.) based on the problem statement: Write a CashWithDrawal function from an ATM which based on user specified amount dispenses bank notes. ...
3
votes
1answer
67 views

Python maintain precision for currency

Working with currencies I am aware it is not good to work with floating point values due to rounding and maintaining precision. Better is to work with integers. Would the following Currency class make ...
25
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4answers
12k views

Validating Credit Card Numbers

This is one of the puzzles I was trying to solve, where the question is to validate the credit card number with following characteristics: It must contain exactly 16 digits. It must start ...
2
votes
2answers
134 views

Loan repayment calculator

I am having some trouble figuring out how to modularize this code without rewriting it entirely. I know I should be able to break it up into modules for main, gathering info, doing calculation and the ...
54
votes
11answers
12k views

Sales tax calculator, rejected for being not OOP

I applied for an Application Developer position. They require all their applicants to complete 1 of 3 programming assignments. I picked one for sales tax calculation. It was quite simple. Write ...
3
votes
1answer
2k views

Calculate EMI based on principal, rate, duration (month or years)

I am trying to create an EMI calculator for a loan. The problem description is: Given a principal amount, rate of interest, monthly or quarterly installment terms and duration of loan in months/...
1
vote
1answer
163 views

Simple calculation of sector coefficients using PHP

Function This class extends the key class, called EQ, and does basic calculation based on minutely data. It then calculates weight coefficients (e.g., [0, 1]) for ...
3
votes
1answer
32 views

Mortgage calculator with Swing for Helsinki MOOC

New to Java, just finished the Helsinki MOOC course. I programmed a basic mortgage calculator as my first solo project and while it works, I have a few questions about coding style: The listener and ...
3
votes
1answer
106 views

Tracking stock prices using Python and Google Sheets

The purpose of this program is to keep track of some stocks that we bought in a game and every week we must list the closing prices of each stock in a Google Sheet. I thought since I had a lot of ...
5
votes
2answers
664 views

OOP bank account program in Python 3

Python beginner here. Building an OOP bank account program with SQLite and starting to struggle a bit with its design. From a design standpoint I have a file (bank) which calls ATM. ATM simulates an ...
3
votes
1answer
14k views

Simple bank account

I believe it is very much possible to make this code more efficient, possibly adding interfaces, inheritance or possibly divide the main class into more classes. I will improve some of the code such ...
0
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2answers
462 views

Loan calculator in C

I wanted to create a loan calculator, but the code I could think of was using 3 functions, and calling them and getting result. But I felt it was easy but bad code because I thought this can be ...
0
votes
1answer
362 views

Predicting credit card default

I have this code for predicting credit card default and it works perfectly, but I am checking here to see if anybody could make it more efficient or compact. It is pretty long though, but please bear ...
1
vote
1answer
68 views

Python 'Cashflow' object

In the code shown below, I have created 3 classes. The first of these are an 'Payment' class and a 'Annuity' class, which allow the user to create objects representing individual or recurring payments ...
0
votes
2answers
97 views

Python 'interest rate' object

I have only recently started learning python and the below is my attempt to create an 'interest rate' object which, given one of several types of interest/discount rate, gives the user access to all ...
5
votes
2answers
2k views

UK tax calculator

I'm very much on the beginner end of the PHP scale but I have read plenty of the entry level books and completed the online training at teamtreehouse.com so I know the basics. I'm at a point where I'...
1
vote
1answer
108 views

Renting vs. owning comparison calculation

I have working code that compares rental prices and owning costs, given some parameters. It works, but it surely does not look good. I hadn't worked with time-series before and I wonder how I could ...
3
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3answers
6k views

Safely convert dollars to cents

For my project, I need to convert dollar to cents, so I wrote the following function to safely do the conversion. The input dollar is float and the output should be ...
2
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2answers
51 views

The importance of consistency in percentage returns when investing

It is said that Being consistent in percentage annual returns leads to larger amount over time. That is for any given principal, getting 20% successively for 2 years is better than 30% for first ...
-1
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1answer
393 views

Compound interest calculator homework [closed]

I am a beginner at coding Java and am having a tough time understanding what is wrong with this code. This is an assignment I had posted about earlier and I also went to a Java tutor at my school for ...
7
votes
3answers
1k views

Reversible tax calculator class

I have a class that contains 2 properties of the same type. decimal NetAmount and decimal GrossAmount I would like to ...
6
votes
1answer
55k views

Bank ATM program in Python

For homework, I have to code a program in Python that effectively simulates a bank ATM. ...
2
votes
1answer
383 views

Profit Margin Calculator in Python (with installments)

I was sent here from StackOverflow to get some insight on how I can improve my code. I'm a beginner and the program is not streamlined at all. What the program does: Takes an input of the Retail ...
6
votes
1answer
631 views

Calculate implied volatility for options on stocks and futures with two models

I wrote a code for a quant finance job and they told me that, besides it worked, it was poorly written. I asked for a more detailed feedback but they did not send it to me. I paste it here with ...
15
votes
3answers
16k views

Basic Python OO bank account

I am learning Python and in particular learning about classes. Since I'm self teaching, I'd appreciate any feedback and constructive criticism. I have a couple specific questions: In Python you can ...
2
votes
1answer
136 views

Kids bank account in Clojure

I'm learning clojure. A while back I made a python bank account for my kids, teaching them to save. Have a look here. The Python one was a class and it created a table that had a little interest ...
7
votes
2answers
1k views

Bank Management System

I'm new to C++ and wrote this Bank Management System app. It's one of the projects that everyone does as a beginner. This app runs perfectly so far. I tried to use OOP and encapsulation in this app. ...
1
vote
1answer
126 views

Currency exchange app

I'm making a currency exchange app, it works as follows: User types in on desired currency input and the rest of the input fields change with state based on the currency value from the input used, I'...
5
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2answers
2k views

Bank account data structure

I need to model simple account data structure. The user should be able: to add a transaction get information about transaction take all transaction of some type sum a transaction and all its ...
8
votes
4answers
3k views

Convert an amount to Indian Notation

I need to convert an amount to an Indian currency format: ...
4
votes
1answer
1k views

A little stock market game in Python

This is a stock market game I made in Python a while ago, and I wanted to go ahead and share it on here. If you are wondering, the reason why there is only 2 stocks is due to the fact that creating a ...
2
votes
0answers
86 views

Computing most-cost effective loans in financial graphs using Java

Problem statement We are given a directed graph \$G = (V, A)\$, where \$V\$ is the set of actors and \$A \subseteq V^2\$ is the set of directed arcs. Existence of an arc \$(u, v) \in A\$ is ...
6
votes
1answer
874 views

Bank saving account class in Python (pandas)

I am setting up a kids bank account class to teach them how to save, and myself how to write a class in Python. The original idea was to create a pandas DataFrame that will show how the money gains ...
4
votes
3answers
443 views

Payments Service

The code that I am working with below is a payment service and MakePaymentRequest request takes in two account numbers, a receiving and a sending account, payment ...
2
votes
2answers
5k views

Calculate weekly net pay

My task is: Write a program that requests the hours worked in a week and then prints the gross pay, the taxes, and the net pay. Assume the following: Basic pay rate = $10.00/hr ...
22
votes
3answers
4k views

Financial website scraper

I wrote the code that would scrap Finviz for tickers and href that attach to the ticker. I tested with multi-page as well as one page. I'm new to python programming and therefore believe my code is ...
3
votes
0answers
85 views

Investment tracker allowing users to store investment information and later access it

This investment tracker allows users to store investment information and later call upon it. This is a simple solution to making investing easier to maintain. This application has a simple login ...
6
votes
1answer
2k views

Expense Tracker for keeping track of payment information

This system is a expense tracker. It allows ordinary people to track expenses, like bills , car notes, and keep up with the payments they make. I had this idea after my father and mother began to mess ...
7
votes
2answers
4k views

Banking application for practice

A few weeks ago I have started to teach myself C# and just finished my first little project, a very basic banking application. I don't expect it to be good but would like to get feedback (no matter ...