Mississippi Form 89-105 Withholding Tax Return in QuickBooks: What Users Need to Know

QuickBooks desktop payroll users responsible for Mississippi state income tax withholding have access to Form 89-105 — the Mississippi Employer’s Withholding Tax Return — directly within the software. While QuickBooks automatically populates most of the form using existing company, payroll, and employee data, several manual checkpoints remain that trip up filers, particularly around filing frequency, amended returns, and address changes.

How QuickBooks Handles the Form

When a user opens Form 89-105 in QuickBooks, the software attempts to prefill the majority of fields based on the payroll data already entered throughout the tax period. In most cases, if all company, payroll, and employee information has been maintained correctly in QuickBooks, no additional manual entry is required. However, users are advised to carefully review every field that QuickBooks did not fill automatically and enter any missing information before filing.

For users who want to verify where specific numbers originated, QuickBooks provides clickable hyperlinks within the form window that trace withholding amounts back to the underlying payroll data. The built-in Help button on the form window offers additional guidance for navigating the interface and troubleshooting specific issues.

Filing Frequency and Deposit Deadlines

One of the most critical details employers must confirm is their filing frequency. Mississippi allows either monthly or quarterly filing, and QuickBooks reflects this choice on the form. Monthly deposits for Form 89-105 are due on the 15th day of the month following the month in which the tax was withheld. Quarterly deposits are permitted only when the total tax withheld is less than $300.

When a due date falls on a Saturday, Sunday, or legal holiday, the return is due on the next business day.

Key Checkboxes That Require Attention

The form includes several checkboxes that QuickBooks may not automatically manage, and getting these wrong can create problems with the Mississippi Department of Revenue:

Address Change

If the employer’s mailing address has changed, the new address must be entered in the mailing address area on the return, and the address change checkbox must be checked. If there is no address change, the box should be left unchecked. Failing to check this box after a move means the state will not have the correct address on file.

Amended Return

Employers who need to adjust a tax period that already has a regular return on file should check the amended return box and file an amended Form 89-105. However, there is an important restriction: if the Annual Reconciliation Return (Form 89-115) has already been filed for that year, employers should not file an amended or additional Form 89-105. Instead, an Amended Annual Reconciliation Return is required in that situation.

Close Account

The close account checkbox signals that the return is final. If an employer is closing their account — for instance, after ceasing operations or stopping payroll — this box must be checked. When e-filing a final return, the employer must also enter the date that final wages were paid. This date tells the state agency not to expect any further returns.

Who Must File

Every employer who withholds — or is required to withhold — Mississippi state income tax from employee wages must file this return. Employers should also be aware that personal liability applies: an employer who fails to withhold or remit the required amounts remains personally liable for those amounts.

Printing and Exporting

QuickBooks allows users to save a copy of the completed payroll form as a PDF, which is useful for recordkeeping or for providing copies to an accountant. Additionally, users who need to summarize their payroll data in a spreadsheet format can export the information to Microsoft Excel for further analysis or reporting.

Mailing the Paper Return

For employers filing by mail rather than electronically, the form includes specific physical preparation instructions. The return should not be folded. Payment checks should not be stapled, clipped, or fastened to the return in any way. Instead, both the return and the check should be placed loose in the envelope and mailed to the state agency at the appropriate address.

Bottom Line

Form 89-105 in QuickBooks is largely automated, but the software’s prefilled data is only as reliable as the payroll records behind it. The most common pitfalls center on the filing frequency selection, the amended return restriction tied to Form 89-115, and the checkboxes for address changes and account closure. Employers should verify each of these manually before submitting.