A genuine National savings account for the people

I hate tax. You hate tax. Lets get rid of it. We can reduce our spending remove all wasteful investments and public spending. We don’t need to spend hundreds of thousands researching krill in the north see or whether or not DEI policy works. If people want to find those things out, this is where the private sector should step in and would if we were to allow them by getting rid of business tax.
We could actually run an investment bank, make a steady 20% a months use the 10% to increase our savings and use the other 10% to cut taxes down to zero, with the exception being that we keep a minimum of 10% of GDP for the military and we run it at continuous war footings levels as an international deterrant. Imagine if we had a 500,000 strong army not made of reservists but proper service men and women who would mostly form an international aid agency in case of emergencies and as part of a diplomatic change of pace because nobody would dare to screw around with us. Because we would have the kit for the army in place, we would have a sophisticated Navy and Airforce and we could offer the US Space Force a rock solid Marine corp just because its really fun! Imagine how cool it would be to have the title Space Marine! There should always be a steady but low level of taxation that we devote intirely to military spending. We can also use that money to start a MOD savings account to maximise our investment portfolio in defence.
Within 20-30 years, the financial burden placed on British people should be negligible and we will be able to remove all of that complex tax code nonesence from the statute books and cut spending even further.