Form Updates - November 25, 2025

Form Updates

Alabama

Form A4 and A4(SP) Updated

Form Title: Employee's Withholding Exemption Tax Certificate, Certificado para todo Empleado de Exención de Retencion de Ingresos para Pago de Impuestos
Form ID: AL101, AL101SP
Form version: 2025.10.0

Form A4 and A4(SP) have been updated, retroactively effective April, 1 2025:

• The revision date has been updated from "3/2014" to "4/2025".
• The mailing address on top of the form has been updated from "50 North Ripley Street, Montgomery, AL 36104" to "375 South Ripley Street, Montgomery, AL 36104".

Documentation

Form A4-MS Updated

Form Title: Nonresident Military Spouse Withholding Tax Exemption Certificate
Form ID: AL103
Form version: 2025.10.0

Form A4-MS has been updated, retroactively effective April, 1 2025:

• The revision date on the form has been updated from "9/19" to "4/25."
• The mailing address on the form has been updated from "50 North Ripley Street, Montgomery, AL 36104" to "375 South Ripley Street, Montgomery, AL 36104."

Documentation

Louisiana

Form L-4 Updated

Form Title: Employee's Withholding Certificate
Form ID: LA101
Form version: 2025.10.0

Form L-4 has been updated, effective January, 1 2026:

• The revision date on the form has been updated from "1/25" to "1/26".
• Contact website on the form has been updated from "www.revenue.louisiana.gov/Contact/ContactUs." to "https://revenue.louisiana.gov/contact-us/."

Documentation

Maryland

Form MW507 Updated

Form Title: Employee's Maryland Withholding Exemption Certificate
Form ID: MO101
Form version: 2025.10.0

Form MW507 has been updated, retroactively effective January, 1 2025:

• The mailing address on the form has been updated from "301 West Preston Street, Baltimore, MD 21201" to "7 St. Paul Street, Baltimore, MD 21202."
• The state abbreviation "MD" was removed from Line 8.

Documentation

Michigan

Form JW-4 Updated

Form Title: Employee's Withholding Certificate for City of Jackson Income Tax
Form ID: MI118P
Form version: 2025.9.0

Form JW-4 has been updated, effective October 1, 2025:

• Changes to formatting on the form PDF.
• Instructions are now on the first page, rather than the back/second page of the document.
• Updates to exemption language on the form and the instructions (exemption added for self and/or spouse if permanently disabled). 

Documentation

Missouri

MO101 Tax parameter value corrected

Form Title: Employee's Withholding Certificate
Form ID: MO101
Form version: 2024.12.0

We have corrected an issue where SPF was always returning a value of false for the employerIntervention tax parameter. This tax parameter will now correctly reflect either false or true, depending on the value for the tax parameter employerInterventionReason.