Are you supposed to include medicare and social security tax withholdings on line 13 of 1040-ES or just the federal income tax withholding portion?

[jaharvey21]

We are married filing jointly. For 2018 I am a W2 employee and my wife is now a 1099 contract employee. I am trying to figure our estimated tax payments for 2018. On line 13 of 1040-ES it asks for "Income tax withheld and estimated to be withheld during 2018". Since I am a W2 employee my employer withholds federal income tax, medicare tax, and social security tax. I am unsure whether to include all three of these withholdings or just the federal income tax portion.

[MichaelL1 · Accepted solution]

You would just include the Federal Income Tax that will be withheld from your pay during 2018 to compute this.

The Form is determining your taxes for 2018 and reducing them by the Federal withholding that will take place during the year.

The Social security and Medicare you pay does not reduce your income tax liability for 2018.