> <i>Results are calculated using the OpenFisca-UK tax-benefit microsimulation model, and assume no behavioural or macroeconomic effects. See the repository for more information.</i><p>Isn't this the complicated and interesting part? It'd nice to add a 99% tax to rich people and big business, but they may just leave the country and build a factory abroad, and there will be no local jobs.
PolicyEngine lets anyone simulate reforms to the UK tax and benefit system, and see the impact on society and their own household. We're working on building it for the US as well. Here's a two minute demo video: <a href="https://youtu.be/P7ELqxEHRhE" rel="nofollow">https://youtu.be/P7ELqxEHRhE</a><p>Looking forward to feedback or questions!