Depends on your circumstances. The UK seems reasonable for most.
For the employed, you let your employer worry about it. You might occasionally get given a "tax code" which essentially equates to your tax free allowance. If that happens you just let your employer know and they'll sort it, and you can confirm by checking your payslip.
If you're determined to have over or underpaid tax (e.g. your income went down unexpectedly), your tax code for the following year will be adjusted so that you'll end up clawing back the money over time.
Unless you are self employed or have special circumstances, then you'll avoid having to file a "self assessment" form.
And to be clear, the "special circumstances" are nothing like the US' system of hundreds of different "deductions".
Even if you do have to fill in a self assessment form, you can do so with an online form, which actually takes into account answers rather than making you manually have to do things such as "Skip section 5 if you have put a number of in section 4b or a number less than 3340 in section 2a" that the US forms love to make you do.
Filing my US taxes is literally 99% of all paperwork I have to do each year, and I don't even earn enough to actually have to pay anything. Yet I still have to calculate everything, then write down the right numbers in the "foreign earned income exclusion" boxes, then tally it all up to make sure it's still zero, then make sure I've copied the right numbers to the right boxes and haven't mistakenly transposed any numbers, then copy those zeroes down to the right boxes through the rest of the 1040.
The UK has had this system for decades, it has had online tax filing since 3 July 2000. It's had PAYE (pay as you earn tax, i.e. tax deduction at source) since 1944.
The UK feels stagnant as heck, so I wouldn't recommend people actually move here, but its tax system is trivial to the point of ignorable if you're employed.
For the employed, you let your employer worry about it. You might occasionally get given a "tax code" which essentially equates to your tax free allowance. If that happens you just let your employer know and they'll sort it, and you can confirm by checking your payslip.
If you're determined to have over or underpaid tax (e.g. your income went down unexpectedly), your tax code for the following year will be adjusted so that you'll end up clawing back the money over time.
Unless you are self employed or have special circumstances, then you'll avoid having to file a "self assessment" form.
And to be clear, the "special circumstances" are nothing like the US' system of hundreds of different "deductions".
Even if you do have to fill in a self assessment form, you can do so with an online form, which actually takes into account answers rather than making you manually have to do things such as "Skip section 5 if you have put a number of in section 4b or a number less than 3340 in section 2a" that the US forms love to make you do.
Filing my US taxes is literally 99% of all paperwork I have to do each year, and I don't even earn enough to actually have to pay anything. Yet I still have to calculate everything, then write down the right numbers in the "foreign earned income exclusion" boxes, then tally it all up to make sure it's still zero, then make sure I've copied the right numbers to the right boxes and haven't mistakenly transposed any numbers, then copy those zeroes down to the right boxes through the rest of the 1040.
The UK has had this system for decades, it has had online tax filing since 3 July 2000. It's had PAYE (pay as you earn tax, i.e. tax deduction at source) since 1944.
The UK feels stagnant as heck, so I wouldn't recommend people actually move here, but its tax system is trivial to the point of ignorable if you're employed.