A local tax return is an income tax filing you submit to a city, county, township, or school district instead of, or in addition to, your federal and state returns. Only about 17 states and the District of Columbia authorize any form of local income tax, so most Americans never encounter one. If you live or work in a jurisdiction that levies one, you almost certainly owe a separate return on top of your federal and state filings, and missing it can trigger penalties that catch people off guard.
Where Local Income Taxes Exist
Local income taxes are far from universal. Ohio, Pennsylvania, Kentucky, Maryland, Michigan, Indiana, and New York are among the states that authorize local jurisdictions to tax personal income. Most states do not permit local income taxes at all. Within the states that do, the taxing body might be a city, a county, a school district, or some combination.
The scale can be surprising. Ohio alone has more than 800 municipal taxing jurisdictions, and Pennsylvania has hundreds of school districts with their own earned income tax rates. Some cities run their own tax departments; others contract with regional collection agencies that process filings for dozens or hundreds of municipalities. In Ohio, the Regional Income Tax Agency handles returns for many member cities. In Pennsylvania, third-party collectors such as Berkheimer and Keystone Collections Group play a similar role. If you are not sure whether your area imposes a local income tax, your municipality’s website or the local tax collector’s office is the most reliable place to check.
What a Local Return Actually Taxes
Most local returns center on one or more of the following:
- Earned income tax: a percentage of wages, salaries, commissions, and bonuses. Rates range from fractions of a percent up to nearly 4% in cities like Philadelphia and New York City. Social Security benefits, pensions, and investment income are generally excluded.
- Net profits tax: the self-employed counterpart to the earned income tax, applied to business or freelance income after allowable deductions.
- Local services tax: a flat annual fee on people who work in certain jurisdictions. Pennsylvania caps this at $52 a year regardless of how many municipalities you work in. Some Colorado cities charge flat monthly amounts between $2 and $10.
- Business privilege or mercantile tax: applied to gross receipts of a business operating in the taxing district, before expenses.
Not every jurisdiction imposes all of these. Some collect only an earned income tax; others stack several. The mix depends entirely on where you live and where you work.
Who Has to File
Two questions usually decide your obligation: where do you live, and where do you work? Most local ordinances require residents to file regardless of where they earned the income. If you also work in a different municipality that imposes its own tax, that jurisdiction may require a separate nonresident filing.
Residents and nonresidents often pay different rates. A city might charge residents 2% on all earned income but tax nonresident commuters at 1% on wages earned inside city limits. The reasoning is that residents use more local services. If you live in one city and work in another, expect two sets of forms and two rates.
Part-year residents typically owe tax to each jurisdiction based on the portion of the year they lived there. Move in July, and you may need to file part-year returns in both your old and new municipalities.
How to Avoid Being Taxed Twice
Filing in two jurisdictions does not mean paying twice on the same dollar. Most local tax systems offer a credit: your home municipality reduces your bill by the amount you already paid to the city where you work. If you paid 1% to your workplace city and your home city charges 1.5%, you owe only the 0.5% difference at home.
The credit is not automatic. You generally have to report the tax paid to the other jurisdiction on your resident return and attach proof of payment. Some jurisdictions want you to complete the nonresident return first and carry the numbers over. Doing this in the wrong order can delay processing or produce an incorrect bill.
State-level reciprocity agreements between neighboring states can further simplify withholding for commuters, but those agreements do not always reach the local level. You may still owe a local filing even when your state situation is straightforward.
What You Need to File
A local return draws on much of the same paperwork as your federal filing:
- Your W-2, where Box 18 shows wages subject to local income tax and Box 19 shows local tax already withheld. Multiple work locations during the year may mean multiple entries or multiple W-2s.
- Any 1099-NEC or 1099-MISC forms if you had self-employment or contract income.
- Business records documenting deductible expenses if you file a net profits return.
- Your Social Security number.
In Pennsylvania, you also need your Political Subdivision Code, a six-digit identifier for your exact municipality and school district. The wrong code routes your payment to the wrong jurisdiction. Your employer’s payroll department, your municipality’s website, or the state tax agency can confirm the correct one.
Accuracy matters here in a way it does not always at the federal level. Local tax offices are smaller and slower to catch mismatches. An incorrect code or a missing W-2 attachment can sit unresolved for months while penalties and interest quietly accrue.
Deadlines and Extensions
Most local income tax returns are due April 15, the same day as your federal return. If you cannot file by then, many jurisdictions grant an extension. Some accept a copy of federal Form 4868 as proof; others require a separate local extension form.
An extension covers paperwork, not payment. If you owe local tax and miss the payment deadline, interest and penalties start running even with an approved extension. Estimate what you owe, pay by April 15, and file the completed return when the extension period ends.
Estimated Payments if You Are Self-Employed
If your income does not have local tax withheld from a paycheck, you may need to make quarterly estimated payments directly to the local tax authority. The structure mirrors the federal system: pay in installments during the year rather than one lump sum at filing. Federal rules generally require estimated payments if you expect to owe at least $1,000 after withholding and credits; local thresholds vary but follow the same idea. Quarterly due dates typically match the federal schedule of April 15, June 15, September 15, and January 15. Confirm the specifics with your local collector, because thresholds and forms are not standardized.
Penalties for Filing Late or Not at All
Penalty structures vary by ordinance. Common charges include a monthly percentage on the unpaid balance, often 0.5% to 1.5%, plus interest that runs somewhere between 6% and 12% a year. Some jurisdictions add a flat administrative fee for late filings.
Willful failure to file can be treated as a misdemeanor in some jurisdictions, with fines and, in extreme cases, jail time. That outcome is rare for a first-time slip, but chronic non-filers and active evaders face real legal exposure. If you discover prior-year filings you missed, contact the local collector before they contact you. Offices are usually more flexible when the taxpayer comes forward first.
Submitting the Return
You can file by mail or through an electronic portal in most jurisdictions. Mailing means printing and signing the form, attaching copies of your W-2 or 1099 documents, and sending everything to the designated collector. Certified mail gives you a tracking receipt as proof of timely filing.
Electronic filing is faster and produces an immediate confirmation number. Many regional collection agencies and municipal tax offices run online portals for filing, paying, and checking account status. If a third-party collector handles your area, its website is where you will find the right forms, e-filing tools, and payment options. Once processed, the return produces either a refund or a remaining balance due.
Deducting Local Taxes on Your Federal Return
Local income taxes you pay during the year are deductible on your federal return if you itemize on Schedule A. They fall under the state and local tax deduction, or SALT, along with state income taxes and property taxes. For the 2025 tax year, the SALT deduction is capped at $40,000 for most filers ($20,000 if married filing separately), with a phase-down for taxpayers whose modified adjusted gross income exceeds $500,000 ($250,000 if married filing separately). The cap adjusts slightly upward for inflation in later years.1Internal Revenue Service. Instructions for Schedule A (Form 1040) (2025)
If your combined state income, local income, and property taxes stay under the cap, everything is deductible. Above it, the extra does not help. The deduction only matters at all if your total itemized deductions exceed the standard deduction, so run the numbers before assuming you will benefit.