City of Delaware Income Tax Guide for Residents and Nonresidents
When you think about taxes, federal and state obligations typically come to mind. However, for individuals living or working in certain municipalities, there is an additional layer: the local income tax. In Ohio, the City of Delaware imposes a municipal income tax that funds essential services such as police, fire, parks, and road maintenance. Understanding the city of Delaware income tax is critical for compliance and avoiding penalties.
Whether you are a full-time resident, a part-year dweller, or a nonresident who earns wages within the city, you may have a filing responsibility. Unlike many states, Ohio allows cities to levy their own income taxes, and each municipality sets its own rules. Delaware is no exception, and navigating its specific regulations can feel daunting. This guide breaks down every aspect—from who must file to how payments are made—so you can meet your obligations with confidence.
Beyond just the rates and forms, it’s important to recognize how city taxes interact with state and federal systems. They are not simply a smaller version of the same structure; they often have different definitions of taxable income and unique credits. By the end of this article, you’ll have a clear picture of the City of Delaware income tax and how to manage it effectively.
Quick Answer

The City of Delaware income tax applies to residents and nonresidents earning income within the city. The current resident rate is 1.85%, with a possible reduced rate for nonresidents depending on reciprocity agreements. Filing is typically done through the Regional Income Tax Agency (RITA) by April 15 each year.
Understanding the City of Delaware Income Tax

The City of Delaware, located in Delaware County, Ohio, has levied an income tax since 1970 to fund municipal operations. This tax is separate from county, state, and federal taxes and is administered primarily by the Regional Income Tax Agency (RITA), a council of governments that handles collection and enforcement for many Ohio municipalities. All individuals who reside in Delaware or work within its borders are subject to the tax unless specifically exempted.
Municipal income taxes in Ohio are based on a local ordinance and are not automatically aligned with state or federal taxable income definitions. Therefore, taxpayers must understand the specific inclusions and exclusions. Delaware’s tax code defines income broadly as any W-2 wages, self-employment earnings, and certain other income sources, but it may exclude things like Social Security benefits and interest income.
Who Must Pay?
Every individual who lives in the City of Delaware for any part of the tax year is considered a resident for tax purposes. Residents are taxed on all income, regardless of where it is earned. That means if you live in Delaware but work in another city, you may still owe Delaware income tax, although you might be eligible for a credit if you pay taxes to the city where you work.
Nonresidents—individuals who do not live in Delaware but work or operate a business within the city limits—are taxed only on the income they earn in Delaware. For example, if you commute from Columbus to a job in Delaware, your wages earned at that job are subject to the City of Delaware income tax. Nonresidents typically file a return and may be subject to withholding by their employer.
Additionally, part-year residents (those who moved into or out of the city during the year) must file a return and apportion their income based on the period of residency. Businesses operating in Delaware, including sole proprietorships and partnerships, are also subject to a separate net profit tax, though this guide focuses on individual taxpayers.
Taxable Income Defined
The starting point for calculating Delaware income tax is your federal adjusted gross income (AGI) with specific modifications. Generally, taxable income includes:
- Salaries, wages, tips, and commissions
- Self-employment income from businesses conducted within the city
- Rental income from properties located in Delaware (for residents, worldwide rental income may apply)
- Bonuses and severance pay
- Certain partnership and S-corporation income
Common items excluded from taxation are:
- Social Security and railroad retirement benefits
- Interest and dividend income (unless part of a business)
- Military pay (subject to specific conditions)
- Unemployment compensation
- Worker’s compensation
- Certain pension income (details may vary)
It is crucial to review the official RITA guidelines or consult a tax professional because the rules can change, and specific situations (like stock options or alimony) may have different treatments.
Current Tax Rate
As of this writing, the City of Delaware imposes a flat income tax rate of 1.85% on all taxable income for residents. Unlike federal taxes, there are no tax brackets or progressive rates. Everyone pays the same percentage regardless of income level. This rate has remained stable for several years, but taxpayers should verify the current rate each year as it can be adjusted by a vote of the city council.
For nonresidents, the tax rate may differ. In many cases, Delaware offers a reduced rate or a credit for taxes paid to the nonresident’s home city. For instance, if you live in a city with a 2% income tax and work in Delaware, you might pay 1.85% to Delaware and claim a credit against your home city’s tax, avoiding double taxation. However, the exact mechanism depends on reciprocity agreements. If no credit is available, you could be taxed at 1.85% by Delaware and then again by your resident city, though many cities offer a credit for taxes paid elsewhere. Always check RITA’s website or speak with a tax advisor to understand your liability.
Exemptions and Credits
Delaware offers certain exemptions and credits to avoid double taxation and reduce burdens on specific groups:
- Reciprocal Credit: If you are a resident of Delaware but work in another municipality that taxes your income, you may claim a credit for the tax paid to that other city, up to the amount of Delaware tax due. This ensures you don’t pay more than the Delaware rate on that income.
- Nonresident Credit: Nonresidents working in Delaware may be able to claim a credit on their resident city tax return for taxes paid to Delaware, depending on that city’s rules.
- Senior Citizen Exemption: Some municipalities in Ohio offer exemptions for taxpayers above a certain age (often 65 or older) with income below a threshold. As of this knowledge cutoff, it’s unclear if Delaware has such an exemption; consult the current ordinances.
- Disability and Military Exemptions: Specific provisions may apply for disabled individuals or active-duty military personnel. For example, military pay may be exempt if the service member is not an Ohio resident.
It’s important to file even if you believe you owe zero tax, as failure to file can result in penalties even if no tax is due.
Filing Your City of Delaware Income Tax Return

Filing your City of Delaware income tax return is a separate process from your state and federal filings. Most taxpayers will file through RITA, either electronically or by mail. The required forms and schedules depend on your residency status and income sources.
Registration and Account Setup
Before filing for the first time, you may need to register with RITA. Individuals who have a Delaware withholding from their paycheck are often automatically registered, but it’s wise to confirm. If you haven’t filed before, you can visit the RITA website and create an account to e-file or request paper forms. Employers are required to withhold Delaware tax and remit it to RITA, so many employees will find that their tax obligation is mostly satisfied through withholding. However, they still must file an annual return to reconcile the amounts.
Filing Deadlines and Extensions
The annual City of Delaware income tax return is generally due on April 15 of the following year, aligning with the federal deadline. If April 15 falls on a weekend or holiday, the deadline moves to the next business day. Delaware, through RITA, may grant an automatic six-month extension to file, but this extension does not extend the time to pay any tax owed. Interest and penalties accrue on unpaid balances from the original due date. To avoid surprises, it’s advisable to estimate your liability and pay any expected balance by April 15.
Required Forms and Documentation
The primary form for individual filers is the RITA Form 37, which is used by residents and nonresidents alike. You will need:
- Your federal tax return (Form 1040) and all schedules
- Your W-2 forms showing Delaware withholding or work location
- Any 1099 forms for self-employment or other income
- Documentation of taxes paid to other municipalities if claiming a credit
Nonresidents may also need to complete a schedule allocating income to Delaware. Part-year residents use a proration schedule. Business owners file separately with a net profit return.
Electronic vs. Paper Filing
RITA strongly encourages electronic filing through its e-filing portal. E-filing is faster, reduces errors, and provides immediate confirmation of receipt. It is available free of charge for individual returns. If you prefer paper filing, you can download forms from the RITA website and mail them to the appropriate address. Allow extra time for processing if mailing.
Payment Rules and Withholding

Understanding how and when to pay the City of Delaware income tax is key to avoiding penalties. The city uses a pay-as-you-go system, similar to federal taxes, meaning tax should be paid throughout the year via withholding or estimated payments.
Employer Withholding Requirements
Employers located in Delaware or doing business in the city are required to withhold the city income tax from their employees’ paychecks. The withholding rate is typically 1.85% for residents and may be 1.85% or a lower rate for nonresidents, depending on the employee’s residency status and available reciprocity. Employers must remit these withholdings to RITA on a monthly or quarterly basis. Employees should review their paystubs to ensure the correct local tax is being withheld. If you live in Delaware, make sure your employer is withholding for Delaware even if you work elsewhere, as you’ll owe the tax as a resident. You may need to file a withholding exemption form (IT 4) with your employer to adjust.
Quarterly Estimated Payments for Self-Employed
If you are self-employed or have significant income not subject to withholding, you must make quarterly estimated tax payments to the City of Delaware. These payments are due on April 15, June 15, September 15, and January 15 of the following year. The amount should cover your expected annual liability. Underpayment penalties can be assessed if you fail to pay enough through withholding or estimated payments. RITA provides a simple estimated payment form and online payment options.
Penalties and Interest for Late Payment
Like the IRS, Delaware imposes penalties for late filing and late payment. The late filing penalty can be up to $25 per month with a maximum of $150, plus interest on unpaid tax. Late payment penalties may be 1% per month up to 25% of the unpaid tax. If no return is filed, RITA may estimate your tax and impose additional fees. It’s important to file even if you cannot pay the full amount, as this reduces penalty exposure.
How City Tax Differs from State and Federal Income Taxes

One of the most confusing aspects for taxpayers is the interplay between federal, state, and local taxes. While they all tax income, the City of Delaware income tax has several key differences:
- Tax Base: Federal taxable income starts with gross income minus adjustments and deductions (standard or itemized). Ohio state tax starts with federal AGI and allows certain deductions and credits. Delaware city tax starts with federal AGI but generally does not allow the same deductions—no standard deduction, personal exemptions, or itemized deductions. It’s a flat percentage of modified AGI.
- Filing Agency: Federal taxes go to the IRS, state taxes to the Ohio Department of Taxation, and city taxes to RITA (or directly to the city if not a RITA member). Each requires a separate filing process.
- Tax Rate Structure: Federal and Ohio state taxes have progressive brackets; the more you earn, the higher your marginal rate. Delaware’s tax is a flat 1.85% regardless of income.
- Residency Rules: Federal taxes are based on worldwide income for U.S. residents. State taxes for Ohio residents tax all income but offer credits for taxes paid to other states. Delaware residents are taxed on all income, similar to the state, but nonresidents are only taxed on income sourced to Delaware, often leading to the need for multiple municipal returns if working in several cities.
- Withholding and Estimated Payments: Both federal and state require estimated payments for self-employed, but municipalities have their own systems. Employers must separately withhold for city tax, and many employees may not realize they need to ensure correct city withholding.
Because of these differences, it’s common for taxpayers to owe city tax even if they receive a federal refund. For example, a resident with high self-employment income might have sufficient federal withholding but no city withholding, leading to a balance due in April. Proactive planning is essential.
FAQ

Do I need to file a City of Delaware income tax return if I only worked there for part of the year?
Yes, all nonresidents who earn any taxable income in Delaware must file a return, regardless of duration. You will report only the income earned while working in the city.
Can I e-file my City of Delaware tax return for free?
Absolutely. RITA provides a free e-filing platform for individual municipal tax returns, including those for Delaware. You can submit your return and make payments online.
Does Social Security count as taxable income for Delaware city tax?
No, Social Security benefits are generally exempt from municipal income tax in Ohio, including the City of Delaware.
What if I already paid taxes to another city on the same income?
If you are a Delaware resident, you can claim a credit for taxes paid to another municipality on the income you earned there, up to the amount of Delaware tax on that income. Nonresidents typically pay Delaware tax and then may claim a credit in their home city.
How do I know if my employer is withholding the correct Delaware tax?
Check your pay stub for a line item labeled “Delaware City Tax” or “DEL City Tax.” The amount should be 1.85% of your taxable wages. If you are a nonresident working in Delaware, confirm the rate with your employer and ensure your work location is set correctly.
Is the City of Delaware income tax deductible on my federal return?
Local income taxes are deductible as an itemized deduction on Schedule A of your federal return, subject to the $10,000 cap on state and local tax deductions (SALT). However, if you take the standard deduction, you cannot deduct these taxes.
Conclusion

Navigating the City of Delaware income tax may seem intricate at first, but with the right information, compliance becomes straightforward. Whether you are a resident earning wages worldwide or a nonresident working within the city, understanding the flat 1.85% rate, filing through RITA, and leveraging credits for double taxation can save you from unnecessary penalties. By keeping accurate records, meeting deadlines, and seeking professional advice when needed, you can manage your local tax obligations efficiently and focus on what matters most—your financial well-being.