What should a user do if they disagree with the IRS on a tax return?

If a user disagrees with the IRS regarding a tax return, the appropriate action is to file an appeal or provide additional documentation. This approach allows the taxpayer to formally challenge the IRS's findings and present their case, which may involve submitting relevant evidence or clarification that supports their original tax return position. Engaging in this process demonstrates an intention to resolve the discrepancy responsibly and could lead to a favorable outcome.

The other options do not promote effective resolution. Ignoring the IRS notification can exacerbate the situation, as it may lead to penalties or further action from the IRS. Automatically accepting the IRS's decision may prevent the taxpayer from voicing valid concerns or clarifying misunderstandings. Changing the next tax return to reflect the IRS findings does not address the specific issue at hand and could lead to inaccuracies in future filings. Thus, taking action through an appeal or submission of additional documentation is the most constructive path forward.