Hi
The new W-4 does not claim your exemptions only. The new W-4 is based on your income and the deductions for dependents by a deduction
amount. The W4 computes only Federal withholding and the SS and medicare taxes are a set amount always. A W-4 calculator is on the b oth the Intuit website and the irs.gov website. I hope this helps you understand the tax withholding issue.