Most Americans have fairly simple single income taxes. Also all banks and investment services have to report your assets and income to the IRS. If your taxes a

Most Americans have fairly simple single income taxes. Also all banks and investment services have to report your assets and income to the IRS. If your taxes are complicated enough to need an actual accountant (not a tax preparer) you'd still need an accountant. But the tax preparers that fill out forms for simple W2s and a couple 1099 forms would be out of business.