Hi , It can be tricky to find that sweet spot of withholdings so you don't owe too much tax and do not receive too large a tax refund. I understand you want to have your tax withheld to be minimized, as you also have a rental loss. The IRS has great guidance on multiple jobs, and entering them on the Form W-4, use the Multiple Jobs Worksheet on page 3. You will be guided to enter an additional amount to withhold in Step 4(c). While you will need to know the approximate amount of pay for each job, you will enter the additional amount of withholding in Step 4(c) on the Form W-4 for only one of the jobs.
https://www.irs.gov/newsroom/faqs-on-the-2020-form-w-4
You could adjust your estimated pay for the jobs.
There is a W-4 Calculator that takes you step-by-step through the worksheet,
https://turbotax.intuit.com/tax-tools/calculators/w4/.
Once you complete the form, give it to your employer. Then, keep a close eye on your next few paychecks to see how the changes impacted your federal income tax withholding. It's always a good idea to compare your 2021 total tax from your 2021 tax return to the year-to-date federal tax withholdings from your most recent paycheck from each employer.
I hope this is helpful!
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