Utilize your financial knowledge, give your answer or opinion to the input question or subject . Answer format is not limited.

In the USA, does the income tax rate on my wages increase with the amount of money in my bank account?
You can call what you're asking about a 'wealth tax', or 'capital tax'.  These are taxes not based on income you earned in a year, but some measure of how much you own. Some countries (Italy I believe is a prime example) tax ownership of foreign land. Some countries tax amounts owned by corporations [Canada did this until ~5-10 years ago depending on province]. Some countries strictly tax your wealth above a certain level (Switzerland, as has been mentioned, does this).  One form of what you are referring to that does exist in the US is the 'Estate Tax'. This is a tax on the amount of wealth that a person owns, at the time they die. The threshold for when this tax applies has been very volatile over the last 20 years, but it is generally in the multi-millions, and I believe sits somewhere around $5M. If these taxes start to crop up more and more (and I believe they will), don't be shocked at the initial 'sticker price'. Theoretically a wealth tax could replace some of the current income tax regime in many countries without creating a strict increased tax burden on their people. ie: if you owe $10k in income tax this year, but a $2k capital tax is instituted next year, then you are still in the same position as long as your income tax is reduced to $8k.  Whether these taxes are effective/preferable or not is really a question of economics, not personal finance, so I will not belabour that point. Note: if the money you have saved earns money (interest, or dividends, or maybe rent from a condo you own), then those earnings are typically taxed alongside your wage income. Any 'wealth/capital tax' as I've described it above would be in addition to income tax on investment earnings.