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

QuickBooks Desktop handles Mississippi’s Form 89-105 — the Employer’s Withholding Tax Return — by prefilling most fields automatically from existing company and payroll data, but users preparing this state filing still run into recurring questions around filing thresholds, check-box logic, and unsupported account types.

Filing Schedule and Deadlines

For monthly filers, deposits are due on the 15th day of the month following the month the tax was withheld. Employers whose withheld tax falls below a certain threshold — under $300 — may file quarterly instead. When a due date lands on a weekend or legal holiday, the return moves to the next business day.

QuickBooks selects the filing frequency — monthly or quarterly — automatically based on what the employer has set up in the company file. Users who need to verify or adjust that frequency should review their payroll setup rather than trying to override it on the form itself.

What QuickBooks Fills In — and What It Does Not

In most cases, when company, payroll, and employee records are complete and current inside QuickBooks, the software populates the return without requiring additional manual entry. The Federal Employer Identification Number appears with its required check digit in the last position. The taxpayer account type defaults to standard withholding.

However, QuickBooks does not support every withholding category Mississippi offers. Employers filing under Withholding Gaming or Withholding Leasing account types cannot use the built-in QuickBooks form and must fall back on the printed version supplied directly by the state agency.

The Filing Period Lock

One point of confusion: the filing period ending date is calculated automatically from the filing frequency and the end date the user selected on the form-selection screen. It cannot be overridden directly on the return. Employers who realize mid-stream that they picked the wrong period need to close the form, return to that selection screen, and choose a different end date.

Checkboxes That Catch People Off Guard

The return includes several check boxes, and getting them wrong can create downstream problems with the state:

• Address Change — If the business has moved, the new address goes in the mailing-address area and this box must be checked. Leaving it unchecked signals no change.
• Amended Return — Employers correcting a period that already has a regular return filed should check this box. There is an important caveat: if the Annual Reconciliation Return (Form 89-115) for that year has already been filed, do not file an amended Form 89-105. Instead, file an amended annual reconciliation.
• Close Account — This marks the return as final. When e-filing, employers must also enter the date final wages were paid so the state knows not to expect further filings.

Line 1 and Withholding Amounts

Line 1 captures Mississippi income tax withheld from employee wages — or the amount that should have been withheld. This figure flows from payroll data already recorded in the company file, assuming withholding setups are accurate.

Personal Liability Reminder

Mississippi holds employers — meaning the individuals responsible — personally liable for amounts they fail to withhold or remit. This is not a penalty assessed against the business entity alone. It underscores the importance of verifying that the prefilled numbers on the QuickBooks-generated return match actual payroll records before filing.

Physical Filing Notes

For employers mailing the paper return rather than e-filing, the state’s handling instructions are specific: do not fold the return, and do not staple, clip, or otherwise fasten the payment check to it. The return and check go loose into the mailing envelope.

When to Look Beyond the Built-In Form

The QuickBooks-generated Form 89-105 covers standard withholding scenarios well, but employers with non-standard account types — or those who need to amend after the annual reconciliation is already on file — will need to work directly with state-supplied forms. For broader QuickBooks payroll troubleshooting, including issues with state forms not generating correctly or withholding calculations appearing off, reviewing the underlying employee and company setup is usually the right starting point before contacting the agency.