Which permits does your market need?
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Permits for your market in Gaithersburg, MD.
In Gaithersburg, organizers of outdoor markets that affect streets, sidewalks or public land need a Special Event Permit from the City's Parks, Recreation & Culture department, filed two to three months ahead. Food vendors need a Montgomery County special food event license, and vendors need a Maryland trader's license and sales tax registration.
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Event permit.
Special Event Permit
The organizer applies online with a detailed site plan showing tents, generators, food areas, closures and similar elements; the City emails payment instructions after submission. Related permits may apply for tents of 12 by 12 feet or larger, generators, live animals and traffic support, plus Montgomery County food and alcohol licenses. Review takes at least four weeks and complex events can take months.
- Who
- Organizer
- From
- City of Gaithersburg Department of Parks, Recreation & Culture
- When
- Planned outdoor events inviting public participation that affect public streets, sidewalks, public lands, facilities or neighboring private property; the City names farmers markets and food fairs among examples. Events for residents of a single block, under 200 people, with no food or alcohol sales, can use the simpler Neighborhood Event application.
- Timing
- Several months ahead: 3 months for events of 1,000 or more people, events with fireworks, food or alcohol, inflatables, live animals or generators, and street closures; 2 months for events of 999 or fewer
Vendor and business licenses.
Trader's License (or Exhibitor's Affidavit)
The Comptroller's license bureau says a trader's license from the Clerk of the Circuit Court is required, along with a sales tax account, and the license year runs May 1 to April 30. A copy of the license or affidavit must be shown to the promoter before the show and displayed during it. Fees are not listed on this page.
- Who
- Vendors
- From
- Montgomery County, Clerk of the Circuit Court (statewide rules enforced by the Comptroller's License Bureau)
- When
- Anyone selling goods in Maryland other than a grower or manufacturer. Exhibitors at a show do not need their own trader's license when the show is promoted by an exempt entity the Comptroller lists (for example a church, government agency or volunteer fire department), or when they give the promoter an Exhibitor's Affidavit saying they get under 10 percent of annual income from like goods at the show. Either way they must not have done more than three shows in the previous 365 days.
Transient Vendor License (roadside or temporary sales)
The Comptroller issues this license free of charge for 90 days, but the seller must first hold a Maryland sales and use tax license and a business license for the county where they will operate. Selling without it can bring a stop-sale order or criminal citation.
- Who
- Vendors
- From
- Comptroller of Maryland
- When
- Sellers who make taxable sales from a vehicle or from a roadside or temporary location they do not own. The Comptroller says it does not apply to exhibitors at fairs, trade shows and flea markets.
- Fee
- Free; valid for 90 days
Sales tax.
Temporary Sales and Use Tax License (30 days)
A vendor emails the event date, name and location plus business details to the Comptroller's temporary license desk (or calls 410-767-1543 or 410-767-5462) and collects the 6 percent or 9 percent Maryland sales and use tax, as the Comptroller states. Vendors at three or more events a year should register for a permanent license through Maryland Tax Connect.
- Who
- Vendors
- From
- Comptroller of Maryland
- When
- Vendors without a permanent Maryland sales and use tax license who sell at one-time events such as craft shows and fairs. Maryland has one statewide rate and no local sales taxes.
- Timing
- Temporary license is valid for 30 days
Flea market and show sales are taxable
The Comptroller says sales at flea markets are subject to the 6 percent sales and use tax like other retail sales, and a seller must hold a license before collecting it. A 30-day permit is available by phone from the Special Events Section at 410-767-1543 or 410-767-1531; frequent sellers should get a permanent license through the Combined Registration Application.
- Who
- Vendors
- From
- Comptroller of Maryland
- When
- Vendors at flea markets and similar markets, including nonprofits and private individuals (casual and isolated sales under $1,000 and a few other sales are exempt).
What the rules ask of you about vendors.
A show promoter may not let an exhibitor take part unless the exhibitor has given a photocopy of a valid Trader's License or an Exhibitor's Affidavit before the show. Exhibitors must display it, and the promoter must forward all Exhibitor Affidavits to the Comptroller's State License Bureau within seven days after the show. Non-compliance is a misdemeanor with a fine up to $100 or up to 30 days in jail. Official page
When to apply.
- Special Event Permit: Several months ahead: 3 months for events of 1,000 or more people, events with fireworks, food or alcohol, inflatables, live animals or generators, and street closures; 2 months for events of 999 or fewer
- Temporary Sales and Use Tax License (30 days): Temporary license is valid for 30 days
Collect your vendors' permits with their applications.
Make the vendor licenses, sales tax registration and food permits above required documents on your application, and check them before you approve anyone.
Check with the office.
This checklist summarizes official government pages read on 2026-10-10. It isn't legal advice; rules, fees and deadlines change. Special events contact: Gaithersburg Special Event Permits 301-258-6350, specialeventpermits@gaithersburgmd.gov. Full page and sources for Gaithersburg.
Common questions.
What permits do I need to host a vendor market?
Usually an event permit from the city or county, licenses and sales tax registration for vendors, and temporary food permits for anyone selling food. Parks, streets, tents and cooking can add more. Pick your city above to see the exact list.
Do I need a permit for a pop-up market on private property?
It depends on the city. Some only require permits on public property; others, like zoning temporary-use permits, apply anywhere. The checklist shows what each city's official pages say.
How far ahead should I apply for an event permit?
Often 30 to 90 days. The median deadline across 111 places in our study is 45 days, and 43 want 60 or more.
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