I have always claimed 0 tax withholding on my W4. I recently had a baby at the end of 2017 and am also married and file jointly. Is it okay to keep claiming 0?

[MichaelDC]

Yes. This is just a guide to help ensure that you have enough withholding to cover your tax obligations. You may have taxable income from other sources that you want to make sure is covered. It is not a be all and end all law, but a way to help determine a safe withholding amount.

There are some that say that you're giving the government an interest-free loan until your refund. And then there are others that appreciate a bigger refund that only costs a few dollars a paycheck.

Please feel free to post any additional details or questions in the comment section.

[brackettbri]

My husband also claims 0, and that would be the only other taxable income, we both have 1 job. I had received an informational email from my employer about a new Tac Cuts and Jobs Act enacted in 12/3017, and they recommended everyone review their withholdings because people may withhold too little and face unexpected tax bills and potential penalties in 2019. I’m no tax expert and got nervous! Want to make sure I was doing the right thing!! Thanks so much

[brackettbri]

My husband also claims 0, and that would be the only other taxable income, we both have 1 job. I had received an informational email from my employer about a new Tac Cuts and Jobs Act enacted in 12/3017, and they recommended everyone review their withholdings because people may withhold too little and face unexpected tax bills and potential penalties in 2019. I’m no tax expert and got nervous! Want to make sure I was doing the right thing!! Thanks so much

[MichaelDC]

I don't blame you. The new tax law and what to expect is the great unknown. One thing to think of is that when a husband and wife both claim M1 or M2 each employer is taking out considering only one income. When you put two incomes together, you may be talking a higher tax bracket. We always each claimed S-0. YMMV
You may want to use these two tax calculators to see what your situation would be next year.
 <a rel="nofollow" target="_blank" href="https://turbotax.intuit.com/tax-tools/calculators/taxcaster/">https://turbotax.intuit.com/tax-tools/...
 <a rel="nofollow" target="_blank" href="https://turbotax.intuit.com/tax-tools/calculators/w4/">https://turbotax.intuit.com/tax-tools/calcula...>

Hope this is helpful.