How many dependant do I claim if I am married with one child?

[SweetieJean]

On your W-4, or on your tax return?

[FrankyB]

w-4

[SweetieJean · Accepted solution]

What your claim on your W-4 form just determines your withholding.  Try this tool:

https://turbotax.intuit.com/tax-tools/calculators/w4/

Your actual tax return is filed Married Joint, and claiming the child as a dependent.

[Hal_Al]

In IRS gobbledygook, you claim 1 dependent, but 3 "exemptions". One exemption for you, one for your spouse, and one for each of your dependents. Neither your spouse or yourself is a "dependent".