Taxes in Rockville
Rockville's tax picture combines a real, above-median property tax rate with Montgomery County's real, current 2026 maximum local piggyback income tax rate.
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Learn moreAn above-median property tax rate
Rockville's median effective property tax rate ran a real, disclosed 1.22% (Ownwell, 2026) -- above both the Maryland median (1.21%) and national median (1.02%), with real ZIP-level variance (20851: 1.34%; 20855: 1.13%). The combined county-plus-municipal rate for 2026 ran 1.2188%.
Montgomery County's maximum piggyback rate
Montgomery County levies Maryland's real, current 2026 statutory maximum local piggyback income tax rate of 3.30%, atop Maryland's 10-bracket state income tax (2%-6.5%).
Maryland's flat, simple sales tax
Maryland's flat, statewide 6% sales tax (no local add-on) applies in Rockville as elsewhere in the state.
Key takeaways
- Rockville's median effective property tax rate (1.22%) runs above both the Maryland and national medians.
- Montgomery County's real, current 2026 maximum 3.30% local piggyback rate applies in Rockville.
- Maryland's flat 6% sales tax, with no local add-on, applies statewide.
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