When you change between blank, each spouse, joint, it moves the ratio of tax and changes the liability. I am not having this issue of changing from joint to blank to joint.
Since you did, TurboTax has a special phone number for help with IRS/state tax letters, which will be easier than going through regular Customer Support. Follow these steps:
- Click on this link,
- then click on the blue button that says "Get Help from TurboTax Support".
- Answer the question regarding what tax year is your letter.
- Then it will ask you what the letter concerns.
- Then it will show you the phone number during posted business hours.
See How to submit documentation for accuracy guarantee claims
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