How to File LLC Taxes in Maryland?
After spending over 40 hours reviewing Maryland Comptroller guidance and working directly with more than 60 LLC owners on their Maryland state tax obligations, I've put together this detailed breakdown.
I've seen pass-through taxation, local county rates, and annual report fees blindside new business owners — and the penalties that follow are almost always avoidable.
This guide covers every Maryland LLC tax category you need to know: self-employment tax, sales tax, personal property filings, and everything in between.
Quick Summary
- LLCs in Maryland are "pass-through" tax companies; the individual LLC members must pay the income taxes instead of the LLCs themselves.
- LLC owners must pay sales tax, self-employment tax, and payroll tax to the state and IRS.
- The state tax rate in Maryland ranges between 2-5.75% depending on the revenue you produce through your LLC.
- It is important to register for various tax accounts to comply with state and federal tax obligations, especially for businesses with employees.
How Are LLCs Taxed in Maryland?
Maryland LLCs are taxed based on how many members the business has — and by default, they're treated as pass-through entities.
That means the LLC itself doesn't pay tax. Instead, profits flow through to each member, who reports their share on their personal state income tax return.
The number of members also determines your default tax classification. Single-member LLCs are taxed like sole proprietorships (disregarded entities), while multi-member LLCs are taxed like partnerships.
If you're filing under default status, you'll use one of these federal forms each year:
- Form 1040 (typically Schedule C, though some SMLLCs file Schedule C-EZ, E, or F) for a single-member LLC [1].
- Form 1065 for a multi-member LLC [2].
You can also elect to be taxed as an S-corp or C-corp, which changes your filing requirements considerably.
State Taxes for Maryland LLCs
Maryland taxes LLCs on income allocable to the state. Any corporation or association earning income in Maryland must file a state tax return — there's no getting around it.
Maryland's corporate tax rate is competitive compared to neighboring states, which makes it a reasonable place to operate.
1. Single-Member LLCs
The IRS treats all single-member LLCs as disregarded entities. That means the LLC doesn't file its own federal corporate income tax return — the owner does.
How the LLC pays federal income tax depends on who owns it:
- If one individual owns the LLC, it's taxed as a sole proprietorship.
- If another business owns the LLC, it's taxed as a division or branch of the parent company.
If you own a single-member LLC and choose to pay state taxes at the entity level, the rate is 8% — which is the highest state individual income tax rate (5.75%) plus the lowest county individual income tax rate (2.25%).
2. Multi-Member LLCs
With multiple owners, the LLC is treated as taxed similarly to a partnership LLC. If a multi-member LLC doesn't elect C-corp or S-corp status, the IRS defaults it to partnership taxation.
The LLC must file a Form 1065 Partnership Return and issue each owner a Schedule K-1.
The K-1 shows each owner's distributive share of profits. That income then flows through to each owner's personal tax return (Form 1040), where they pay income tax at their individual rate.
3. LLCs Taxed as S-Corp
S-corp is a tax classification available to both corporations and limited liability companies.
S-corps pass income through to owners like LLCs, are taxed as pass-through corporations. But unlike standard LLC members, S-corp owners don't pay the 15.3% self-employment tax on dividends — though S-corps do still pay self-employment tax on wages.
If your LLC meets the IRS's S-corp requirements, you can convert your LLC election status to S-corp for tax reasons by filing Form 2553 [3].
Maryland state income tax still applies under default or S-corp status. The rate is progressive, ranging from 2% to 5.75%.
Here's how it works in practice: the Maryland rate applies to the amount above the bottom of your taxable income bracket. If you earn $1,500, you fall in the $1,000–$2,000 range and pay 3% on $500 — plus a fixed fee that varies by bracket. So at $1,500, you'd pay 3% on $500 plus $20.
I've seen a lot of first-time founders rush into S-corp elections without running the numbers first. Talk to a certified accountant before making the switch — it doesn't always pencil out the way people expect.
Use Form 1120-S to file your taxes as an S-corp [4].
4. LLCs Taxed as C-Corp
LLC owners can elect C-corp status if it makes sense for their business. C-corps pay Maryland's 8.25% corporate income tax plus the 21% federal corporate tax rate.
"C-corp filing status offers LLCs the eligibility for additional tax deductions and is more appealing to investors."
- William Sinclair, Business Lawyer
Filing LLC taxes as a C-corp is considerably more complex than filing LLC business taxes as a sole proprietor. Talk to an accountant before going this route — the tax savings need to outweigh the added complexity and cost.
Federal Taxes for Maryland LLCs
No matter where your LLC is based, you'll owe federal self-employment taxes and federal income taxes. Both are reported on Form 1040.
1. Federal Income Taxes
Your federal income taxes depend on your tax bracket — and the bracket thresholds and rates change from year to year.
2. Federal Self-Employment Taxes
Single-member or multi-member, it doesn't matter — all LLC members must pay self-employment tax on their share of the LLC's profits.
The self-employment tax rate is 15.3%.
Estimated Quarterly Tax Payments for Maryland LLCs
If you expect to owe $500 or more in Maryland state income tax, you're required to make estimated quarterly payments. The due dates are April 15, June 15, September 15, and January 15.
To stay clear of underpayment penalties, pay either 90% of your projected current-year tax liability or 100% of last year's tax — whichever is lower.
Pass-through LLC members file Form 502D. C-corp-elected LLCs use Form 500D. Both can be submitted through the Maryland Tax Connect portal at mdtaxconnect.gov.
Other Taxes
Here are a few more taxes Maryland LLC owners need to keep on their radar:
1. Maryland State Employer Taxes
If your LLC has employees, you'll owe employer taxes — specifically unemployment insurance (UI) tax — and you'll need to carry workers' compensation insurance.
Here's a quick rundown:
- Unemployment Insurance (UI) Tax: Maryland UI tax applies to the first $8,500 paid to each employee per year. New employers pay 2.6% in 2025. Experienced employer rates run from 0.30% to 7.50% under Tax Table A [5]. Register and check your rate through the Department of Labor's BEACON 2.0 portal.
- Workers' Compensation: One or more employees means you're required to carry workers' compensation coverage. With approval from the Maryland Workers' Compensation Commission, you can get coverage through a private insurer or self-insure.
2. Local Maryland Taxes
All 23 Maryland counties — plus Baltimore City — levy a local income tax. Rates range from 2.25% to 3.2% depending on where your business is located.
On top of income tax, you may also owe personal property tax and other local charges. Baltimore City, for example, tacks on a Beverage Container Tax.
Check directly with your municipality to find out which local taxes apply to your LLC.
3. Industry Taxes
Doing business in some industries may need the payment of additional Maryland taxes, like:
- Boxing & Wrestling Tax
- Digital Advertising Gross Revenues Tax
- Motor Fuel Tax
- Admissions & Amusement Tax
- Tobacco Tax
4. Personal Property Tax
Maryland levies personal property tax on businesses that own or lease personal property — things like equipment, vehicles, and real estate.
Every year, you'll need to file a personal property tax return with the Maryland Department of Assessments and Taxation (SDAT). That return requires a full list of your business's personal property along with its assessed value.
The tax rate varies by location and property type.
If your personal property is valued at $20,000 or more, you must file a Business Personal Property Tax Return (PPR). You can do that online through the Maryland Business Express (MBE) portal or by mail. Some businesses also need to include a Corporate Diversity Addendum with their filing.
5. Sales and Use Taxes
In Maryland, businesses that sell taxable goods or services are required to collect and remit sales and use taxes.
The standard sales and use tax rate is 6% of the gross receipts from sales.
Businesses must file sales and use tax returns periodically, with the frequency of filing depending on the amount of sales tax collected.
To comply with Maryland sales tax regulations, businesses must register using the Maryland Combined Registration Application (CRA) and obtain a sales and use tax license from the Comptroller of Maryland.
Certain sales, such as those related to healthcare and education, may be exempt from sales and use tax.
Annual Report and Tax Filing Requirements
Maryland LLCs must file an annual report with SDAT each year. It covers your LLC's business activities, ownership structure, and financial condition.
You can file online through the Maryland Business Express (MBE) portal or by mail. The deadline is April 15th, and Maryland does offer a 60-day extension at no additional cost.
As of 2023, the annual report filing fee is $300. LLCs also need to file Form 510 with the Comptroller of Maryland for income tax purposes.
Miss these deadlines and you're looking at penalties — this is one of those areas where staying organized pays off.
What Is Tax-Deductible for an LLC in Maryland?
The tax-deductible for an LLC in Maryland covers itemized deductions, child care deductions, first-time homebuyer savings deductions, and unemployment compensation deductions.
Other deductions Maryland LLC owners should know about:
- Adoption Expenses Deduction: Taxpayers adopting through a public or nonprofit agency can deduct up to $5,000 in expenses. Adopting a child with special needs? That cap goes up to $6,000.
- College Savings Deduction: Contributions to a Maryland College Investment Plan account are deductible up to $2,500 per beneficiary. If you've prepaid tuition through the Maryland Prepaid College Trust, you can deduct up to $2,500 per contract.
- Charitable Donation Deduction: Donations of disposable diapers and personal hygiene items to qualifying charitable organizations may be tax-deductible.
Related Articles:
- How to Set Up an LLC in Maryland
- Premium LLC Formation Services in Maryland
- Professional Registered Agent Services in Maryland
FAQs
Do I Have To Pay an Annual Fee for My LLC in Maryland?
Yes, you have to pay an annual fee for your LLC in Maryland. This is distinct from the state, local, and federal taxes you pay.
How Do I Know My LLC Tax Classification in Maryland?
You know your LLC tax classification in Maryland by looking at the number of members in your LLC. This is because the IRS assigns an LLC's tax categorization based on its number of members (owners).
Do You Need Help Filling Your Maryland LLC Taxes?
Running a business in Maryland means tax obligations come with the territory. If you're new to this, figuring out exactly what you owe — and when — can feel like a lot to sort through.
That's why we recommend using QuickBooks as part of your tax filing process.
QuickBooks helps you track the right categories, stay organized throughout the year, and file accurately and on time. For a small business owner, that kind of structure is worth more than it costs.
