This is simply a wrapper running the latest version. The BittyTax tool is primarily aimed at CGT calculation for crypto, however the HMRC matching rules are the same for shares and so this tool is great when used for this purpose too. The BittyTax format is a good fit when you are working with other foreign currencies and not just GBP, for example, Trading 212 and Interactive Brokers where the currency you are using for trades could be USD. This tool assumes that you already have data in the correct BittyTax format. If adding crypto trades there could be an issue depending on the amount of API price lookups, so bear that in mind.

Thanks for BittyTax goes to Scott Green who has created it over the years. It has been immensely helpful to me. Please consider donating to help support his project at https://github.com/sponsors/BittyTax . This wrapper is not affilated with BittyTax in any way, it is just a way to bring this tool to a wider audience. The idea is to add features here going forward. The functionaltiy here is provided 'as is' without any warranty. This tool is written in Python and the source code is available here. Any questions or comments email at btwrapper@edce.uk