Maryland Side Hustle Tax Calculator
Calculate your Maryland state tax (4.75%), federal tax, and self-employment tax on 1099 income.
Last updated: January 2026 · Data from IRS Rev Proc 2024-40
Maryland side hustlers face one of the more complex tax situations in the country. The Old Line State has progressive state income tax rates from 2% to 5.75%, but every Maryland county and Baltimore City levies additional local income taxes ranging from 2.25% to 3.20%.
How Side Hustle Taxes Work in Maryland
Maryland has a layered tax system:
**Maryland state tax rates (2025):** - 2.00% to 4.75% on income up to $100,000 - 5.00% to 5.75% on higher incomes
**Local income taxes (mandatory):** - Montgomery, Howard, PG, Baltimore County/City: 3.20% - Anne Arundel County: 2.81% - Worcester County: 2.25% (lowest)
**Combined state + local rates:** - Most Maryland residents: 7.95% to 8.95% (4.75% + local)
What Maryland Side Hustlers Owe
Let's say you're a single filer in Montgomery County with a $65,000 W-2 job and $18,000 in side hustle income from freelance consulting, with $3,000 in business expenses.
**Your estimated taxes on the side hustle:** - Net self-employment income: $15,000 - Federal SE tax (15.3% of 92.35%): ~$2,122 - Federal income tax on side income: ~$3,300 (22% bracket) - Maryland state tax (4.75%): ~$713 - Montgomery County tax (3.20%): ~$480 - **Total additional tax: ~$6,615**
Maryland Tax Deadlines 2025
Maryland estimated tax deadlines: - **Q1**: April 15, 2025 - **Q2**: June 16, 2025 - **Q3**: September 15, 2025 - **Q4**: January 15, 2026
Use Form 502D for Maryland estimated tax payments. County taxes are included.
Common Deductions for Maryland Freelancers
Maryland deductions for freelancers: - Maryland starts with federal adjusted gross income - All Schedule C business expenses reduce Maryland taxes - Home office deduction - Business vehicle mileage (67 cents/mile)
Maryland Side Hustle Tax FAQ
Does Maryland have local income taxes?
Yes, every Maryland county and Baltimore City levies local income taxes ranging from 2.25% to 3.20% in addition to state taxes.
What is the total tax rate for Maryland side hustlers?
Most Maryland side hustlers pay a combined state + local rate of 7.95% to 8.95% on their self-employment income.
Do I file county taxes separately?
No, Maryland local taxes are calculated and paid with your state return (Form 502).
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