A reminder that taxes don't fund the government they curb inflation. The government funds itself by printing money and taking out loans.
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The government is entirely capable of funding itself through printing money but as the PDF above describes - this will cause inflation. Taxes exist to reduce circulating currency and prevent run away inflation.
This is why the US as the reserve currency can sustain greater debt to finance itself before seeing inflationary pressures and the UK (and other countries) cannot.