What is Maryland's income tax rate for self-employed workers in 2026?

Progressive state rates up to 5.75%, plus your county's local income tax of 2.25%–3.20%. Most suburban DC counties charge the 3.20% maximum.

What is the Maryland county piggyback tax?

A local income tax set by your county of residence, collected with your state return. It's a flat percentage of your Maryland taxable income — 3.20% in Baltimore City, Montgomery, Prince George's and Howard counties.

Does Maryland allow the QBI deduction?

No. Maryland does not conform to the federal 20% qualified business income deduction for state or county tax.

When are Maryland quarterly estimated taxes due?

Form 502D payments (state + county combined) follow the federal calendar: April 15, June 15, September 15, 2026 and January 15, 2027, required if you expect to owe more than $500.

I live in Maryland but gig in DC — who taxes me?

Maryland taxes all of your income as a resident, wherever earned. DC does not tax non-resident self-employment income, so there's no credit to claim — you simply owe Maryland state plus county tax.

How much should a Maryland gig worker set aside for taxes?

Around 30% to 35% of net profit typically covers federal income tax, the 15.3% self-employment tax, and the combined state + county rate of up to 8.95%.

Maryland Self-Employed Tax Calculator

Federal income tax + 15.3% SE tax + Maryland state tax + the mandatory county piggyback tax (2.25%–3.20%) on 2026 1099 income.

Maryland is really two income taxes in one: a progressive state rate up to 5.75%, plus a county 'piggyback' tax of 2.25% to 3.20% depending on where you live. Baltimore City, Montgomery, Prince George's and Howard counties all sit at the 3.20% maximum, pushing combined top rates near 9%. The good news: both layers are filed together on Form 502 — no separate local return. The bad news: Maryland doesn't allow the federal QBI deduction, so your state taxable income runs higher than federal.

Self-employed income & expenses

Estimate federal + SE + state tax for the 2026 tax year in one pass.

Annual 1099 income

Business miles driven

Other business expenses

Self-employed health insurance

Retirement contributions (SEP / Solo 401k)

W-2 income (if any)

Federal tax withheld

Filing status

State

Estimated total tax bill

$12,789

Refund / owed

-$12,789

Effective rate

21.3%

Detailed breakdown

Mileage deduction$5,600

Total business expenses$8,100

Net self-employment income$51,900

Self-employment tax (15.3%)$7,333

½ SE deduction (above-the-line)$3,667

Adjusted gross income$48,233

Taxable income$32,133

Federal income tax$3,608

State tax (est.)$1,848

Quarterly estimated payment$3,013

Marginal rate17.8%

Maryland city tax rates for self-employed workers (2026)

Maryland stacks two layers: a progressive state income tax topping out at 5.75%, PLUS a mandatory county 'piggyback' local income tax of 2.25%–3.20% based on where you live — one of the few states where the local tax is collected on the state return.

Local and state tax rates for self-employed residents of major Maryland cities in 2026
City	Local rate	State rate	What gig workers should know
Baltimore City	3.20% county tax	Up to 5.75%	Highest local rate in the state; combined top rate approaches 8.95%.
Montgomery County	3.20% county tax	Up to 5.75%	Also highest tier; DC commuters living here owe MD on all income.
Prince George's County	3.20% county tax	Up to 5.75%	Highest local tier; collected with the state return.
Howard County	3.20% county tax	Up to 5.75%	Highest local tier since 2021.
Anne Arundel County	2.81% county tax	Up to 5.75%	Mid-tier local rate; still filed on the state Form 502.

Maryland local and state filing deadlines

Q1 Form 502DApril 15, 2026
State + county combined estimated payment; required if you expect to owe more than $500.
Q2 Form 502DJune 15, 2026
Second installment.
Q3 Form 502DSeptember 15, 2026
Third installment.
Q4 Form 502DJanuary 15, 2027
Final installment for the 2026 year.
MD Form 502 resident returnApril 15, 2027
County tax is calculated on the same return — no separate local filing.
Q1 federal 1040-ESApril 15, 2026
Covers income earned January 1 – March 31.
Q2 federal 1040-ESJune 15, 2026
Covers April 1 – May 31.
Q3 federal 1040-ESSeptember 15, 2026
Covers June 1 – August 31.
Q4 federal 1040-ESJanuary 15, 2027
Covers September 1 – December 31.

The county piggyback tax is not optional and not small: at 3.20% it adds more than half again on top of a 5.75% state bracket — set aside accordingly.
Maryland does not allow the federal QBI deduction for state or county tax, so your MD taxable income runs higher than federal.
DC and Virginia have reciprocity with Maryland for wages — but self-employment income is always taxable by Maryland if you live there, no matter where the work happens.

See every Maryland tax form you need to file — annual, quarterly, and local →

Frequently asked questions

What is Maryland's income tax rate for self-employed workers in 2026?: Progressive state rates up to 5.75%, plus your county's local income tax of 2.25%–3.20%. Most suburban DC counties charge the 3.20% maximum.
What is the Maryland county piggyback tax?: A local income tax set by your county of residence, collected with your state return. It's a flat percentage of your Maryland taxable income — 3.20% in Baltimore City, Montgomery, Prince George's and Howard counties.
Does Maryland allow the QBI deduction?: No. Maryland does not conform to the federal 20% qualified business income deduction for state or county tax.
When are Maryland quarterly estimated taxes due?: Form 502D payments (state + county combined) follow the federal calendar: April 15, June 15, September 15, 2026 and January 15, 2027, required if you expect to owe more than $500.
I live in Maryland but gig in DC — who taxes me?: Maryland taxes all of your income as a resident, wherever earned. DC does not tax non-resident self-employment income, so there's no credit to claim — you simply owe Maryland state plus county tax.
How much should a Maryland gig worker set aside for taxes?: Around 30% to 35% of net profit typically covers federal income tax, the 15.3% self-employment tax, and the combined state + county rate of up to 8.95%.