Hello @Lexi
To calculate for multiple jobs and/or working spouse the easiest way to do that is to use TurboTax's W-4 Withholding Calculator . It will walk you through a series of questions about your income, tax deductions, and credits, and it provides instructions for completing Step 3 and 4 of the form.
Just remember, while you need to fill out a W-4 for each employer you work for, you should only complete Steps 2 through 4 for your highest paying job. For other jobs, leave those steps blank.
To ensure your tax withheld is appropriate for your tax situation, you can divide the amount you usually pay in federal taxes by the number of paychecks you receive in a year and compare it to the withholding from your and your spouses paystubs to find out if your estimates are accurate.
You and your spouse can update your W-4 form anytime during the year. Just remember, adjustments made later in the year will have less impact on your taxes for that year.
Hope this helps!
