>>107787631. I add my total wages.
2. I make the standard deduction to get my taxable income.
3. By looking up this level of taxable income in the tax tables,
I find the correct amount they should have withheld.
4. If my income withheld is higher, they owe me. If not, I owe them.
There's nothing to the 1040, so forms must be harder everywhere.
Side incomes would complicate things.