Gaithersburg, MD Bookkeeping Services — Standards-Grade Books
Gaithersburg is where Maryland measures things — NIST calibrates the nation’s standards here, AstraZeneca runs a 1.3-million-square-foot R&D and manufacturing campus, and one of America’s most diverse small-business communities fills Kentlands, Olde Towne, and the corridors between. A city this technical deserves books held to spec. Maxim Liberty has delivered since 2005 — from $75/month.
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Lab-adjacent firms, contractors, and family businesses get a dedicated bookkeeper at $15/hour — daily transaction logging, monthly reconciliations, equipment schedules built for the city+county property layers, and tax-ready financials. 100% money-back guarantee on the first deposit.
Running the Numbers in Gaithersburg
Like Rockville, Gaithersburg is an incorporated city that layers its own personal property tax ($0.5300) on Montgomery County’s $1.6855 — a combined $2.2155 per $100 that makes equipment records worth maintaining properly. The business mix runs wide: biotech and advanced-manufacturing suppliers, IT and engineering consultancies serving NIST’s orbit, trades, restaurants, and retail across one of the most international main streets in the state. The obligations run identical for all of them: SDAT’s $300 report April 15, clean sales-tax handling where goods are sold.
Gaithersburg Tax Cheat Sheet
| Obligation | Rate / Fee | Deadline |
|---|---|---|
| SDAT Annual Report (every LLC/corp) | $300 flat | April 15 |
| Business personal property — combined city + county | $2.2155 per $100 ($0.5300 city + $1.6855 county) | Reported with SDAT Form 1 |
| County income tax (residents) | 3.20% piggyback | Withholding / personal returns |
| Sales & use tax | 6% (3% on purchased IT/data services) | If you collect |
| General business license | None for services | Trader’s license if selling goods |
Rates from SDAT official 2025–2026 levy-year schedules.
What We Handle for Gaithersburg Businesses
Suppliers and light manufacturers get production-aware books with materials and WIP tracked honestly. Consultancies get engagement-level margins. Restaurants and shops get POS-to-bank tie-outs with the 6% kept clean. Equipment-heavy operations get asset schedules tuned to the double property layer. And CPA firms across the upcounty quietly run client books through us at $10/hour. Behind? Catch-up bookkeeping makes short work of it.
Gaithersburg Bookkeeping FAQs
City and county both tax our equipment?
Yes — Gaithersburg adds $0.5300 to the county’s $1.6855 (combined $2.2155 per $100 of depreciated value), all reported once with your April 15 SDAT filing. Proper depreciation classes keep old equipment from being taxed like new.
Our shop sells parts and service — what applies to what?
Parts (goods) carry 6% sales tax and can trigger the trader’s license; service labor generally doesn’t. We keep the two revenue streams separated at the books level so filings and license thresholds stay obvious.
What does a NIST-adjacent consultancy need from its books?
Contract-tagged time and costs, clean separation of direct and indirect, and records that answer a prime’s or agency’s questions without reconstruction. That structure is our default for federal-adjacent clients.
Do you have a Gaithersburg office?
We are fully virtual — founded in Vienna, Virginia in 2005 and headquartered in San Juan, Puerto Rico today. Dedicated bookkeeper from $75/month, daily logging, 100% money-back guarantee on your first deposit.
Related Resources
Calibrated Books for a City of Standards
Dedicated bookkeeping for Gaithersburg — from $75/month with a money-back guarantee on your first deposit.