The taxable income calculations are as expected (no question of them having extra income added). Just the TAX calculated is OFF by ~$2000 from the number it should be based on the 2024 tax slabs.
It says blended-tax-rate of 20.8% where as it should have been 20.2%. So there is some problem with the tax-rate used to calculate. I don't think the IRS tax-calculation methods have any ambiguity.
I can't pay them to see the form or Tax calculations before I know if their calculations are correct (they have no-refund policy.. even if there is a mistake your money is gone). Have to use some other tax-software unfortunately.
