A local tax ID number is an account number that a city, county, municipality, or school district assigns to track the local income or earnings taxes you owe within that jurisdiction. It sits below your federal Employer Identification Number or Social Security Number and any state tax account, and it exists only where a local government has its own taxing authority. Roughly 15 states authorize some form of local income tax, so whether you need one depends entirely on where you live, work, or operate a business.
How It Differs From Federal and State Tax IDs
The IRS issues federal taxpayer identification numbers: Social Security Numbers for individuals, Employer Identification Numbers for businesses and other entities, and Individual Taxpayer Identification Numbers for people who can’t get an SSN.1Internal Revenue Service. Taxpayer Identification Numbers (TIN) Those numbers follow you nationwide. State tax IDs work the same way at the state level.
A local tax ID is narrower. It’s tied to one municipality, one county, or one school district. A resident of a city that levies a local earned income tax gets an account number from the city’s tax collector or from a regional collection agency working on the city’s behalf. A business operating in the same city gets its own local account for withholding and remitting local taxes on employee wages. Your federal EIN or SSN identifies you to the IRS; a local tax ID identifies you to a specific town or district.
Most people first hear the term when filling out employment paperwork, moving to a new municipality, or registering a business. If a form asks for a local tax identification number and you’ve never had one, that usually means you have to register with the local tax authority before you can finish the form.
Where Local Income Taxes Actually Exist
Local income taxes are far from universal. Most Americans never encounter one. The jurisdictions that impose them cluster in Pennsylvania, Ohio, Kentucky, Indiana, Maryland, and Michigan. Pennsylvania alone has thousands of municipalities and school districts with local earned income taxes, and Ohio has hundreds of cities with their own income tax ordinances. A smaller set of individual cities in other states also levy local earnings taxes, including New York City and Kansas City.
The structure varies. Some jurisdictions charge a flat percentage of earned income. Others impose a fixed dollar amount per paycheck or per month. Percentage rates generally fall between a fraction of a percent and roughly 4%, and in Pennsylvania workers often owe both a municipal earned income tax and a separate school district tax, each with its own rate. The combined amount tends to be modest next to federal and state income taxes, but ignoring it creates real problems.
If you live and work in a state that doesn’t authorize local income taxes, you won’t need a local tax ID for income tax purposes. You may still see local registration requirements for business-related taxes like gross receipts taxes or business privilege taxes, but those work differently from the earned income tax systems that produce what most people think of as a local tax ID.
Who Needs to Register
Two broad groups need a local tax ID: individual wage earners and businesses.
- Individual residents. If you live in a municipality that levies a local earned income tax, you’re generally required to register with the local tax collector or the regional agency that handles collections for your area. Your employer may withhold automatically, but you’re still responsible for confirming that you’re registered and that the correct jurisdiction is receiving your payments.
- Businesses and employers. Any business operating in a jurisdiction with a local income tax typically needs its own local tax account. Employers withhold local taxes from employee paychecks and remit them to the correct municipality. The business itself may also owe a local net profits tax. Self-employed people owe both the employee and employer portions and usually make estimated quarterly payments.
- New residents. Moving into a jurisdiction with a local tax triggers a registration obligation. This catches people off guard, particularly those relocating from areas without local income taxes.
If you work in one municipality and live in another, both jurisdictions may require you to register. Credits usually prevent full double taxation, but you still need active accounts in both places to file properly.
How to Register
Registration steps vary by jurisdiction, but the general path is the same. Contact the local tax collector, municipal revenue department, or the regional tax collection agency that serves your area. Many jurisdictions offer online registration through a dedicated portal. Others still accept paper forms by mail or in person at city hall.2U.S. Small Business Administration. Get Federal and State Tax ID Numbers
You’ll typically need to provide:
- Your Social Security Number or federal EIN, which links the local account to your federal tax identity.1Internal Revenue Service. Taxpayer Identification Numbers (TIN)
- A physical street address within the jurisdiction. P.O. boxes and virtual office addresses are generally not accepted.
- Proof of residency, such as a lease, mortgage statement, or utility bill.
- Business details if you’re registering a business: the date operations began, the nature of the activity, and employer information if you have employees.
Accuracy matters more than people realize. Local tax systems often involve overlapping jurisdictions. You might live in a borough that falls within a particular school district, and both levy separate taxes. The wrong jurisdiction code on your registration sends your payments to the wrong place.
Processing times vary. Some online portals issue an account number almost immediately. Paper applications can take two weeks or more. Once approved, you’ll receive a local tax account number that must appear on all local returns and payment vouchers. Keep it accessible; you’ll use it for every filing.
Living in One Place and Working in Another
The most confusing situation hits people who live in one taxing jurisdiction and work in another. If your home municipality charges a 1% earned income tax and the city where your office sits charges 1.5%, you don’t owe 2.5% combined. Most systems use a credit mechanism: you pay the tax where you work, and your home jurisdiction credits what you already paid. If your home rate is lower than your work rate, you typically owe nothing additional at home. If your home rate is higher, you pay the difference to your home municipality.
This credit isn’t automatic. You need to be registered in both jurisdictions and file returns in both to claim it. Employers generally withhold based on the work location, so reconciling the home side falls to you. People who skip the home filing because their employer already withheld often receive delinquency notices from their home municipality years later.
Some states handle this more cleanly through reciprocity agreements or centralized collection agencies that sort out the credits behind the scenes. Others leave it entirely to the taxpayer. A call to your local tax collector about how credits work in your specific case is worth the time.
Remote Work Complications
Remote work has made local tax obligations harder to sort out. The core question: if you work from home in one municipality for an employer based in another, which jurisdiction gets to tax your income? The answer depends on the state, the municipality, and in some places on litigation that’s still being worked out.
During the pandemic, several states passed emergency rules that treated remote work days as days worked at the employer’s location, keeping revenue flowing to the city where the office sat. Some rules expired; others became permanent or semi-permanent. Courts have split on whether nonresidents can be taxed by a city they never physically entered during the year.
If you work remotely, check the rules in both your home jurisdiction and your employer’s jurisdiction. You may need a local tax ID in both. Hybrid workers who split time between a home office and an office in a different municipality face the most complexity, since obligations may need to be allocated based on the proportion of days worked in each location.
Keeping Your Account Current
Once you have a local tax account, keeping it updated is your responsibility. Common changes that require notice:
- Moving to a new address, even within the same municipality, so tax correspondence reaches you. Moving to a different municipality typically means closing the old account and opening a new one.
- Name changes from marriage, divorce, or a legal name change, usually documented with a court order or updated government ID.
- Closing a business. File a final return and formally deactivate the account. Leaving it open invites delinquency notices for returns you never filed.
- Moving out of the jurisdiction entirely. File a final return covering the portion of the year you were there, then close the account.
Most jurisdictions expect these changes reported within 30 to 90 days depending on local ordinance.
Penalties for Not Registering or Filing
Local tax authorities have real enforcement power, and penalties accumulate faster than most people expect:
- Late filing penalties. Many jurisdictions impose a flat penalty on unfiled returns regardless of whether tax is owed. The penalty applies per return, so multiple missed years multiply quickly.
- Interest on unpaid tax, accruing from the original due date. Rates vary but commonly run between 6% and 12% per year.
- Underpayment penalties, separate from interest. Some jurisdictions charge 15% or more of the unpaid balance as a one-time penalty.
- Liens and collections. Municipalities can place liens on your property for unpaid local taxes, and some pursue wage garnishment for persistent nonpayment.3Internal Revenue Service. Understanding a Federal Tax Lien
Enforcement intensity varies. Large cities with dedicated revenue departments tend to catch noncompliance faster than small boroughs relying on third-party collectors. Even small jurisdictions eventually reconcile their records against state and federal data, and when they do, the accumulated penalties and interest can dwarf the original tax owed.
Employer Withholding Responsibilities
If you run a business with employees in a jurisdiction that levies a local income tax, the withholding obligation falls on you. Employers register for a local tax account, withhold the correct percentage from each paycheck, and remit the funds to the appropriate municipality on a set schedule, usually monthly or quarterly. Failing to withhold and remit carries steeper penalties than individual noncompliance because the employer holds those funds as a trustee for the municipality.
Employers also need to track where each employee actually works. A business operating in multiple municipalities may need separate local tax accounts in each one, with withholding allocated based on where each employee performs their work. For businesses with remote or hybrid workers, that can mean withholding for several local jurisdictions at once. Payroll software handles much of this automatically, but someone has to set it up correctly, and that starts with having the right local tax IDs.
Employees should check their pay stubs to confirm the correct local jurisdiction appears on their withholding. If the wrong municipality is listed, the payments go to the wrong place, and fixing it later involves refund requests from one jurisdiction and back payments to another.