If you own stocks, ETFs or other equity assets and in your country is tax which allows you not pay taxes if you hold your assets some time. Then you probably will need FIFO Google Sheet which helps calculate you how much of your sales you don't have to tax.
I do not provide financial advice. This FIFO law applies in the country I live in and I created it for my taxes. I offer this script to you as well. You need to know what you are doing - a FIFO script will make your job easier.
More info about FIFO Scripts for Google Sheets on my website.
You will get Google Sheet with basic structure which should be filled with outputs from your broker and with FIFO functions.