Minnesota Expanded Review of 2025 Tax Returns Begins

Minnesota is implementing an expanded review of 2025 tax returns as the Minnesota Department of Revenue updates its systems to reflect recent federal law changes. State officials say the effort is intended to improve compliance and accuracy as individual income tax filings move through the 2026 filing season.

Expanded Reviews Follow Federal Law Changes

The Minnesota Department of Revenue has confirmed it is broadening its review process following federal tax changes enacted in 2025. Updates are required to align Minnesota’s tax systems with revisions to the Internal Revenue Code that affect taxable income, tax deductions, and certain Tax Credits.

Minnesota generally conforms to federal tax law, including provisions originating from the Tax Cuts and Jobs Act, but it does not automatically adopt every federal change. When Minnesota tax law diverges, taxpayers must make state-specific adjustments on the Minnesota Individual Income Tax Return. These differences can affect income tax rates, itemized deductions, and tax liabilities, increasing the likelihood of additional review.

State Updates Systems as Federal Rules Shift

Department officials say system updates are designed to identify reporting errors early and reduce incorrect refunds or underpayments, particularly where federal tax treatment differs from Minnesota requirements. Officials note that changes affecting depreciation rules, pass-through income, and certain above-the-line deductions have required additional programming updates.

The Department of Revenue has stated that the expanded review process is being phased in to minimize disruption during the filing season. Returns that are electronically filed and include consistent supporting documentation are expected to process more quickly through the system.

Budget Documents Show Increased Audit Capacity

Minnesota Management and Budget documents for the 2026–27 biennium outline increased audit and review capacity at the Department of Revenue. The House budget resolution approved by the Minnesota legislature includes funding to support enhanced oversight as the state responds to growing complexity in income tax administration.

Governor Tim Walz’s administration has stated that the additional resources are intended to support accurate tax collection, rather than increasing penalties. Income tax revenues are a key component of the state’s financial forecasts.

Additional Review Resources Added for 2025 Filings

Budget materials indicate that added staffing will enable the Department of Revenue to more closely examine tax returns that show discrepancies between federal tax filings and Minnesota requirements, including documentation supporting deductions and credits. Officials say much of the additional review work will focus on correspondence audits rather than in-person examinations.

Certain 2025 Tax Returns Likely to Face Closer Review

While most taxpayers are expected to file their returns without issue, some are more likely to receive additional scrutiny. These include filings with complex income reporting, significant differences between federal and state calculations, or claims involving itemized deductions and tax credits such as the Child Tax Credit, which may be treated differently under Minnesota law.

Taxpayers who moved during the year may also face closer review. Minnesota requires part-year residents and nonresidents to properly allocate income using the Minnesota Nonresident and Part-Year Resident Return. Errors in residency status or income sourcing are among the most common issues identified during reviews.

Income Reporting and State Adjustments Draw Attention

Officials say errors in income classification or failure to apply Minnesota-specific adjustments to taxable income are common reasons tax returns are flagged for review. These issues often arise when taxpayers rely solely on federal calculations without accounting for the differences required under Minnesota law.

The Department of Revenue notes that this includes incorrectly excluding income that is taxable at the state level but exempt from federal taxation. Such discrepancies can trigger automated screening or requests for additional documentation during the review process.

Automated Screening Flags Returns for Further Review

The Department of Revenue utilizes automated systems to compare tax returns with IRS data, including information reported on Form 1040 and Schedule C. Returns flagged through data matching may be corrected automatically or selected for correspondence audits, which request additional documentation.

According to department guidance, Minnesota generally has up to three and a half years after a return is filed to initiate an audit. However, longer timeframes may apply in specific cases, such as substantial understatement of income.

Processing Times and Refund Delays May Increase

State officials caution that the expanded review process may lead to longer processing times for some 2025 tax returns, particularly those selected for additional verification. Returns requiring manual review or follow-up documentation may experience delays before refunds are issued or balances are finalized.

The Department of Revenue advises taxpayers to allow additional time for processing if their return includes adjustments related to recent federal law changes or Minnesota-specific modifications. Officials continue to recommend electronic filing and direct deposit as the most reliable way to avoid unnecessary delays during the filing season.

Tax professionals advise responding promptly to any Department of Revenue requests for information and submitting complete documentation within the stated timeframe. Failure to respond may result in temporary adjustments or delayed resolution while the review process continues.

What Taxpayers Should Do Before Filing

As the Minnesota expanded review of 2025 tax returns moves forward, taxpayers are encouraged to review Minnesota-specific guidance before filing their returns. Maintaining clear records and responding promptly to any Department of Revenue notices can help limit delays.

Tax professionals advise a careful review of taxable income calculations, deductions, and credits that are affected by changes in federal law. State officials emphasize that the expanded review process is intended to promote consistency and fairness across all individual income tax filings.

Source Links

• Minnesota Management and Budget, Summary of Agencies, Programs, and Activities – Department of Revenue (FY 2026–27)
• Minnesota Department of Revenue, Tax Law Changes
• Minnesota Department of Revenue, Audit Information

‍By William Mc Lee, Editor-in-Chief & Tax Expert—Get Tax Relief Now