How to estimate taxes with W-2 and 1099 income
Plan estimated payments when a job with withholding and self-employment income happen in the same household.
Use withholding before estimated payments
W-2 withholding can count toward the same annual federal tax obligation that estimated payments cover. If withholding is high enough, it may reduce the amount that needs to be paid quarterly.
Enter federal tax already withheld so the calculator does not treat the full annual tax estimate as unpaid.
How W-2 wages affect SE tax
W-2 wages can also affect the Social Security portion of self-employment tax because the annual Social Security wage base is shared across covered earnings. A high W-2 wage can reduce the SE income still subject to the 12.4% Social Security portion.
The Medicare portion does not have the same wage-base cap, and higher earners may have Additional Medicare Tax considerations.
Spouse income and filing status
For married filing jointly or separately, spouse income can change brackets, deductions, credits, and Medicare thresholds. Spouse self-employment income can also create its own SE tax.
The calculator asks whether spouse income is W-2 or self-employed so the estimate does not silently treat all spouse income the same way.
The guide explains the rule. The calculator shows how it changes your next quarterly payment.
Open the calculator