Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Why do Americans have to file taxes, even if their only source of income is from a regular job?
I think the key point that's making the other commenters misunderstand each other here is the concept of "deductions". I can only speak for the UK, but that's only a concept that business owners would understand in this country.  For things like child credits or low income tax credits, we don't get paid them at the end of the tax year, but into our bank accounts every couple of weeks all year round. Therefore, we have nothing to "deduct". If we work for a company and have business expenses, then the company pays for them. If we make interest on our savings, the bank pays it for us. We make money at our jobs, and the employer works out what taxes and national insurance we owe, based on a tax code that the government works out for us annually (which we can challenge).  To be fair, it's not like we're free from bureaucracy if we want to claim these benefits. There are often lots of forms if you want child benefit or disability allowances, for instance. We just apply as soon as we're eligible, rather than waiting to get a lump sum rebate. So it appears to be a very different system, and neither is inherently better than the other (though I'm personally glad I don't usually have to fill in a big tax return myself, which I only did one year when I was self employed). I'd be interested to know, since Google has let me down, which countries use the American system, and which the British or Czech.