As you said, you're filling out your Form W-4 accurately and updating every year, do you have other income that is causing the Balance due? Do you have dependents that maybe both of you are putting on each of your W-4? Are you checking the box in Step 2c for multiple jobs?
If any of the above issues is not the reason for balance due then let's use "Extra Withholding" in Step 4c. Divide the amount of money you owed on your Tax Year 2025 by remaining pay periods in 2026 and enter that amount on Line 4c. That should fix your balance due situation!!
As long as you have paid 100% of your prior year tax liability, or 110% (if your Adjusted Gross Income was over $150,000 for Married filing joint), you will not have any Estimated Tax Penalty.
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