If you don't match, then the IRS will either audit you or send you a proposed correction (along with penalties); i.e. once you fail to match, then the IRS is allowed to show you the correct calculations.
This is an incredibly convoluted system.
If you don't match, then the IRS will either audit you or send you a proposed correction (along with penalties); i.e. once you fail to match, then the IRS is allowed to show you the correct calculations.
This is an incredibly convoluted system.
Of course you can get your overpaid taxes back by means of the tax return - but a lot of people don't have the money or time or knowledge to do that.
The overpaid money is to the government if requested back, an interest-free loan - if not requested back, a gift.
If the government would now tell the IRS to fill out the form for you - then there would be significantly less income - due to more accurate taxation.
This is not true at all. You decide how much money will be deducted from each paycheck by filling out form W-4 and similar state forms. You can make withholding adjustments after each paycheck.
IRS will penalize you if you "prepay" too little (for instance, if you owe them more than 10% of your total tax), but there nothing that prevents you from not giving them interest-free loan.