Maryland Capital Gains Tax, Explained

Maryland has no separate capital gains schedule. Every dollar of gain, stock, crypto, a rental, a business, lands on your Maryland return as ordinary income and climbs the same bracket ladder as your salary. What makes Maryland unusual is that the state number is only half the bill.

Every Maryland resident's county of residence, plus Baltimore City, also imposes its own local "piggyback" income tax, a percentage add-on collected on the same state return, not a separate filing. It is mandatory. There's no opting out while you live in Maryland, and it applies to the same Maryland taxable income that includes your capital gain. Rates are generally in the 2.25% to 3.2% range, and 2025 legislation raised the maximum a county may charge to 3.3%, with a few counties already at or near that ceiling.

Worked example: a Maryland resident in a 3.2% piggyback county sells an asset for a $150,000 long-term gain, with total income landing in the top standard 5.75% state bracket. State tax: $150,000 x 5.75% = $8,625. County tax: $150,000 x 3.2% = $4,800. Combined state and local: $13,425, an effective 8.95% rate, before any federal tax or the surcharge discussed next. Move that same sale to a lower-piggyback county and the local slice drops; move it to Dorchester or another county near the 3.3% cap and it rises slightly.

Maryland's 2025 Budget Reconciliation and Financing Act added something no other state on this site has: a standalone surcharge that applies specifically to capital gains, separate from the ordinary income brackets above. Starting with tax year 2025, if your federal adjusted gross income for the year exceeds $350,000, an additional 2% applies to your net capital gains, on top of the regular state bracket and the county piggyback tax.

A few features are worth knowing before you assume it applies:

• It's triggered by total federal AGI, not just the gain. Wages, business income, and the gain itself all count toward the $350,000 threshold. A moderate-income household with one large one-time sale can cross the line for that year alone.
• Primary residence sales are exempt up to $1.5 million of sale price, subject to the usual eligibility rules, so most home sales stay outside the surcharge entirely even if they land above the federal Section 121 exclusion.
• Retirement account gains and certain Section 179 business property are carved out, along with a handful of narrower categories (farm livestock sales, conservation easement land, and nonprofit affordable-housing transfers, per published legislative summaries).
• It stacks, it doesn't replace. The surcharge is additive to the 5.75%/6.25%/6.5% state brackets and the county piggyback tax, not a substitute rate.

None of the Maryland math above changes how the IRS treats the same sale. A long-term gain still gets the federal 0%, 15%, or 20% rate, and higher earners still layer on the 3.8% Net Investment Income Tax above the federal MAGI thresholds. Holding period is entirely a federal concept; Maryland taxes a ten-year gain and a ten-day gain identically.

Put the full stack together for a top-bracket Maryland seller who also crosses the surcharge threshold: roughly 5.75% to 6.5% state, plus up to 3.3% county, plus 2% surcharge, plus 20% federal, plus 3.8% NIIT. That combined figure can approach the high 30s as a percentage of the gain, among the higher all-in state-plus-federal combinations in the country for a large one-time sale. The gap between a rushed, unplanned closing and one modeled a quarter in advance is frequently five figures on a mid-six-figure gain.

Related: estimated tax payments guide · underpayment penalty calculator.

A rental sale in Maryland has the same federal layering as anywhere else: depreciation claimed over the years comes back as recapture at up to 25% federally, and the rest of the gain gets long-term treatment. Maryland doesn't have a separate recapture rate; the whole gain, recapture included, is state and county ordinary income, and it counts toward the $350,000 surcharge threshold discussed above.

The angle that's specific to Maryland is nonresident withholding. If you sell Maryland real property and you're not a Maryland resident, the title company withholds tax at closing as a prepayment toward your eventual Maryland liability, reported on Form MW506NRS. For individual, estate, and trust sellers that rate is 8.75% as of 2026 (business entities withhold at a different rate), calculated against the gain or a statutory formula, not simply against the full sale price. It isn't an extra tax on top of what you'd otherwise owe; it's cash held back and reconciled when you file your Maryland nonresident return, and sellers who can show the withholding would overshoot their real liability can apply for an exemption certificate before closing.

And a 1031 exchange works the same way here as federally: gain deferred on the federal return generally stays out of your Maryland income for the year of the exchange too, since Maryland starts from your federal numbers.

A large share of Maryland's population lives in the DC suburbs and works across the Potomac or in the District itself. Wage reciprocity agreements in the DC-Maryland-Virginia area mostly settle where your paycheck is taxed. They generally don't extend to investment income. Capital gains on stock, crypto, and most intangibles are taxed by your state of residence on the date you sell, not by where you commute for work.

In practice that means a Maryland resident who works in downtown DC still owes the full Maryland stack, state bracket, county piggyback, and the surcharge if applicable, on a stock or business sale, with no offset just because the salary was earned across the border. The one exception that runs the other way is real estate: Maryland-situated property stays Maryland-source income regardless of where the seller lives when the deal closes.

For households genuinely weighing a move across the river before a large sale, see the general framing in our Virginia capital gains guide. A residency change has to be real, documented, and in place well before the transaction, not a paperwork exercise timed to the closing date.