Mobile Car Wash Permit Requirements in Louisville, KY

1. EIN (Employer Identification Number)

   Required if you have employees or operate as an LLC or corporation. Free from the IRS, obtained instantly online.

   Official government source

   Free·Immediate (online application)

   Free

   Immediate (online application)

2. EPA Stormwater Compliance — Clean Water Act Section 402

   Mobile car wash operations that discharge wash water are subject to the federal Clean Water Act. The EPA's National Pollutant Discharge Elimination System (NPDES) prohibits discharge of polluted wash water to storm drains or waterways without a permit. Most mobile operators achieve compliance by using containment systems and disposing of water via sanitary sewer. Larger operations (e.g., fleet washing facilities) may require an NPDES permit.

   Official government source

   Free (containment equipment: $200–$1,500)·Before first wash

   Free (containment equipment: $200–$1,500)

   Before first wash

1. Kentucky Business Registration

   Mobile car wash and auto detailing businesses organized as an LLC, corporation, or limited partnership must file organizing documents with the Kentucky Secretary of State and file an annual report each year. A business operating under a trade name other than its real name must also file a certificate of assumed name under KRS 365.015: a sole proprietor files it with the county clerk of the county where the principal place of business is located, while an LLC, corporation, or limited partnership files it with the Secretary of State and then records a file-stamped copy with the county clerk. An LLC is commonly chosen to limit personal liability for work performed on customers' property.

   Official government source

   $40 to file LLC articles of organization or for-profit articles of incorporation (corporations also owe organization tax, $10 minimum); $15 annual report; certificate of assumed name $20 at the Secretary of State, or the county clerk's KRS 64.012 recording fee ($33 for five pages or fewer; the Jefferson County Clerk publishes $46) for a sole proprietor·Secretary of State filings are effective on the date filed; the assumed-name certificate runs five years and is renewable

   $40 to file LLC articles of organization or for-profit articles of incorporation (corporations also owe organization tax, $10 minimum); $15 annual report; certificate of assumed name $20 at the Secretary of State, or the county clerk's KRS 64.012 recording fee ($33 for five pages or fewer; the Jefferson County Clerk publishes $46) for a sole proprietor

   Secretary of State filings are effective on the date filed; the assumed-name certificate runs five years and is renewable

2. Kentucky Environmental / Stormwater Compliance

   Mobile car wash operations generate wastewater containing detergents, surfactants, oils, and road grime. Kentucky water quality regulations in 401 KAR Chapters 5 and 9, administered by the Division of Water in the Energy and Environment Cabinet and consistent with the federal Clean Water Act, prohibit discharging this wash water to storm drains, street gutters, or waterways. Operators must use a containment mat with a recovery system (wet/dry vacuum or pump) or route wash water to a sanitary sewer with the local sewer utility's approval. There is no Kentucky Department of Environmental Quality; contact the Division of Water for guidance.

   Official government source

   No fee — this is a self-compliance obligation, not a permit; a KPDES permit is required only for a direct discharge to waters of the Commonwealth·Immediate — no application or approval step for ordinary containment-and-recovery compliance

   No fee — this is a self-compliance obligation, not a permit; a KPDES permit is required only for a direct discharge to waters of the Commonwealth

   Immediate — no application or approval step for ordinary containment-and-recovery compliance

3. Kentucky Sales and Use Tax Registration

   Kentucky's 6% sales tax applies to retail sales of tangible personal property and to the specific services enumerated in KRS 139.200. Car washing and auto detailing are not among the enumerated taxable services in that statute, so the labor itself is generally not taxable; however, any tangible products a detailer sells to the customer (waxes, air fresheners, accessories) are taxable retail sales, and the business owes use tax on supplies bought without tax. Register for a sales and use tax account through the Kentucky Department of Revenue's One Stop Business Portal, and confirm your specific services with the Department before deciding not to collect.

   Official government source

   No fee to register for a Kentucky sales and use tax account; the tax rate is 6% of gross receipts on taxable sales·Not published by the Department of Revenue; One Stop registration is completed online

   No fee to register for a Kentucky sales and use tax account; the tax rate is 6% of gross receipts on taxable sales

   Not published by the Department of Revenue; One Stop registration is completed online

1. Louisville Metro Revenue Commission — Occupational License Tax Registration

   A mobile car wash or auto detailing business operating throughout Louisville Metro registers once with the Revenue Commission. Louisville Metro does not issue a general local business license. The Louisville Metro Revenue Commission states that to start a new business "there is no local business license required"; instead a new business must register with the Revenue Commission, the Jefferson County Clerk's Office, and the Commonwealth of Kentucky. Registration with the Revenue Commission opens an occupational license tax account. The tax is on net profits (and on employee wages, withheld quarterly on Form W-1), reported annually on Form OL-3, due the 15th day of the 4th month after the end of the taxpayer's fiscal year. There is no flat annual license fee.

   Official government source

   No local business license fee. Occupational license tax of 2.2% (resident rate) or 1.45% (non-resident rate) on net profits and on wages; minimum $25 penalty for filing late·Not published by the Revenue Commission; registration is completed online. The annual OL-3 return is due the 15th day of the 4th month after the fiscal year ends

   No local business license fee. Occupational license tax of 2.2% (resident rate) or 1.45% (non-resident rate) on net profits and on wages; minimum $25 penalty for filing late

   Not published by the Revenue Commission; registration is completed online. The annual OL-3 return is due the 15th day of the 4th month after the fiscal year ends

2. Louisville Stormwater / Wastewater Discharge Compliance

   Discharging mobile car wash water — which carries detergents, oils, and road grime — to storm drains, gutters, or waterways is prohibited in Louisville. Stormwater quality and the illicit discharge program are administered by the Louisville and Jefferson County Metropolitan Sewer District (MSD), not by the Revenue Commission. Operators should contain runoff with a portable berm or mat, recover it with a wet/dry vacuum or pump, and dispose of it to an approved sanitary sewer connection or a licensed disposal facility. MSD investigates reported illicit discharges and enforcement can include penalties.

   Official government source

   No fee — this is a discharge prohibition enforced through MSD's illicit discharge program, not a permit or registration for individual operators·Immediate — compliance applies from the first day of operation; there is no application step

   No fee — this is a discharge prohibition enforced through MSD's illicit discharge program, not a permit or registration for individual operators

   Immediate — compliance applies from the first day of operation; there is no application step

3. No Louisville Chemical Use Registration — MSD Hazardous Materials Plan Instead

   There is no Jefferson County Environmental Health department and no chemical-use registration for mobile detailers. City and county health functions are the Louisville Metro Department of Public Health and Wellness, whose environmental programs cover food safety, public facilities, mosquito and rabies control, lead poisoning prevention and construction plan review — not chemical registration. Neither LMCO Chapter 96 on health regulations nor the Title XI business regulation chapters create one. What does exist is the Louisville/Jefferson County Hazardous Materials Ordinance, LMCO Chapter 95, administered by MSD, which requires a Hazardous Material Use and Spill Prevention Control plan from a business site holding 56 gallons or more of petroleum products, a listed material at or above its Appendix A reportable quantity, or 100 pounds or more of any unlisted corrosive, explosive, ignitable, reactive or radioactive material. A typical mobile detailer carrying consumer-quantity degreasers falls under those thresholds and is exempt, though MSD may ask for a Request for Exemption. Spill reporting applies at any quantity if a release reaches a sewer or stream — call 911, with fines up to $5,000 for failing to notify. Separately, MSD's discharge regulations flatly prohibit commercial vehicle wash water from entering a storm drain, and the federal Hazard Communication Standard at 29 CFR 1910.1200 requires a safety data sheet for each hazardous chemical used.

   Official government source

   No registration fee — none exists. If the hazardous materials thresholds are crossed, the one-time LMCO Chapter 95 plan filing fee with MSD is $25 for a business with 1 to 4 employees, $50 for 5 to 9, $75 for 10 to 24, $100 for 25 to 49, $150 for 50 to 99, $250 for 100 to 499, $500 for 500 to 999, and $750 above that·Not applicable — there is no chemical-use registration to apply for; the Chapter 95 plan, when triggered, is a one-time filing with MSD

   No registration fee — none exists. If the hazardous materials thresholds are crossed, the one-time LMCO Chapter 95 plan filing fee with MSD is $25 for a business with 1 to 4 employees, $50 for 5 to 9, $75 for 10 to 24, $100 for 25 to 49, $150 for 50 to 99, $250 for 100 to 499, $500 for 500 to 999, and $750 above that

   Not applicable — there is no chemical-use registration to apply for; the Chapter 95 plan, when triggered, is a one-time filing with MSD

4. Louisville Home Occupation Rules (if operating from a residence)

   Louisville allows home occupations as an accessory use in residential zones when conducted by the resident and subordinate to the residential use. A home occupation licence, administered by Planning and Design Services, is required only where the business serves customers, clients, or pupils on site or has one or more non-resident employees — a mobile car wash that visits customers generally needs neither. The standing restrictions still apply: no change to the exterior appearance, nothing visible from the right of way or adjacent property, no signage on the dwelling, no outdoor storage of equipment associated with the business, no noise, odours, or vibration detectable off the lot, and no more than two commercial deliveries in any 24 hours.

   Official government source

   No fee for a home occupation that needs no licence; Louisville does not publish the home occupation licence fee on its home occupations page·Not applicable where no licence is required; Planning and Design Services publishes no processing time

   No fee for a home occupation that needs no licence; Louisville does not publish the home occupation licence fee on its home occupations page

   Not applicable where no licence is required; Planning and Design Services publishes no processing time

Official Sources

• Louisville Business Licensing
• Kentucky Environmental Quality — Water Programs
• EPA NPDES — Stormwater Discharges
• IRS EIN Application

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