If you take no deductions then I agree your taxes are pretty straightforward - you owe a percentage of what you earned and must reconcile that with whatever you

If you take no deductions then I agree your taxes are pretty straightforward - you owe a percentage of what you earned and must reconcile that with whatever you have already paid. If your tax situation is more complicated, it's much harder to automatically assume a government created tax return would be accurate. Ex: I bought a house with my partner, how should we divide the write offs entailed to minimize our tax liability? Will the government also be keeping track of every purchase so that it knows how to verify/account for things I buy for work which I also can deduct?