[tyoma]

The tax table only focuses on income tax, but the UK derives a substantial portion of its national budget from VAT, which the US lacks (yes, I know about sales tax — not the same in rates or effect).

This does not consider costs. Example: US spends more per person on Medicare and Medicaid than the UK spends per person on NHS. Medicare and Medicaid are not exactly known for lavish spending.

Many expensive services are labor intensive and labor costs more. Other costs are driven by political factors — which are not caused by corporate interest but are instead wildly popular with voters (example: NIMBY-ism, Prop 13).

Even the dreaded tax filing business exists because there is a substantial political base that hates taxes — and having an awful and infuriating UI/UX to the tax system makes people hate taxes more. The fact that you have to fill out all those forms is a feature, not a bug.