Tax Calculator

Introduction

Have you ever seen an option that says Tax-Free Threshold on one of the documents you have to fill out when you just land a new job and wonder what that means, whether you should tick it? This Tax Calculator is here to answer all your questions related to the amount of tax you pay.

There are 4 tax categories which you might be in for a given job that has income, each of which is described on the website. If you enter your salary and pay cycle it will calculate the tax incurs for each category. You can also choose to upload a pay slip which will autofill them along with the amount of tax withheld by your employer and determines which category you were taxed in.

This is extremely helpful when you have multiple sources of income. Since you only claim the Tax-Free Threshold from one payer so that payer will withhold tax from your income at a lower rate than the others, you might forget which one you claimed, or you could get taxed at the wrong rate for whatever reason (E.g. taxed as a Working Holiday Maker when you are an Australian resident for tax purposes), this tool can help you solve all these problems.

Deployment

Frontend

Deploy the frontend

cd frontend
npm install
npm run deploy

View the frontend on GitHub Pages

Backend

Deploy the backend

cd backend
npm install
gcloud app deploy

View the backend on Google Cloud

gcloud app browser

Running Locally

Run the frontend in one terminal

cd frontend
npm install
npm start

Change line 9 in Upload.tsx from

const SERVER_URL = 'https://tax-calculator-355806.ts.r.appspot.com/';

to

import { SERVER_URL } from '../config';

Run the backend in another terminal

cd backend
npm install
npm run nodemon