offbeatmammal/py-stock-sl

Prices Short/Long holding periods to determine Capital Gains on Stock value

py-stock-sl

Prices historical stock lots to determine after-tax valuation of a portfolio based on short-term and long-term holding period capital gains impact.

Assumes that the tax rate for a short sale is 28%, and for a long sale is 15%. This can be adjusted by changing

shortRate = 0.28
longRate = 0.15

Note:

This is just for fun, please talk to your accountant and verify the numbers before making any assumptions based on the calculations (and if you find ways to improve the accuracy, please share!)

Requires

Developed using: Python3, but also tested and planned to remain compatible with Python2.7

Users need to have an API key from Alpha Vantage which is inserted into the personalParams.py file

apikey = "1234"

personalParams.py file also needs the stock positions:

st = [
      ["AMZN",[
       [10,305.17,"01-01-2014"],
       [20,352.50,"01-01-2015"]]
      ],
      ["TMUS",
       [[10, 43.92,"06-13-2016"]]
      ]
     ]

The format of st is the ticker, followed by a group listing the number of shares, the purchase price and the purchase date (in the format dd-mm-yyyy)

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To-Do

• Resiliance: make code more able to handle errors
• Customize: allow user to enter (and store) tax rates and stock lots
  • will this be a web page that stores data in local storage, or server stored (with login requirement)?
  • possibly expose the code as an endpoint to return results based on passing parameters

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If you make use of this and like it and want to give something back... I wrote a book! :)

Contribute

This project can be forked from Github. Please issue pull requests from feature branches.

License

See Licence file in repo, or refer to http://unlicense.org