Accountant & Bookkeeping Services in Middlesex, NJ
Tax Expert provides bookkeeping, payroll and tax for businesses in the Borough of Middlesex. We work with trades, home-based businesses and small employers, on fixed monthly fees with one dedicated accountant.
Accounting and tax services for Middlesex
- Individual tax returns
- Personal tax planning
- Bookkeeping for the self-employed
- See all business services
Business in Middlesex Borough
The Borough of Middlesex is a mostly residential town in Middlesex County, between Dunellen and Bound Brook. Many local businesses are run from home or from small units: electricians, plumbers, landscapers, cleaning companies, consultants and online sellers. That makes good records, vehicle logs and home office rules especially important. (Searching for the county as a whole? We also work with businesses across Middlesex County.)
What Middlesex clients usually need from us
- Home-based businesses: the home office deduction, vehicle mileage or actual expenses, and simple bookkeeping you can keep up with.
- Trades: job costing, equipment depreciation, 1099s for helpers and quarterly estimated taxes.
- Growing owners: moving from sole proprietor to an LLC or S corp when it starts to save tax, and running a reasonable salary through payroll.
- Families: federal and New Jersey personal returns.
Deadlines and rules: 1099 and W-2 deadlines · US tax guide 2026 · New Jersey filings explained
We also serve nearby: Dunellen (our office), Piscataway, South Plainfield, Bound Brook, Plainfield.
Tax preparation and bookkeeping in Middlesex, NJ
Middlesex borough sits right next to Dunellen, so we are one of the closest accounting offices for local residents and business owners.
- Personal tax preparation: Form 1040 and NJ-1040, including W-2 income, rentals, side businesses and investments.
- Contractors and trades: Schedule C or LLC returns, quarterly estimated taxes and 1099 filings for subcontractors.
- Bookkeeping and payroll: monthly books, payroll runs and New Jersey sales tax returns.
- Planning: entity choice, S corporation elections and year-end tax planning.
One dedicated accountant, a fixed fee and a free first consultation.
Directions from Middlesex to our Dunellen office
Our office is at 411 Walnut St, Dunellen, NJ 08812, a short drive from Middlesex. Meetings are by appointment, and you can also work with us fully online.
Other areas we serve
Accountant in Dunellen · Accountant in Piscataway · Accountant in Plainfield · Accountant in South Plainfield · Accountant in Bound Brook · All locations
Frequently asked questions
Can I deduct my home office?
If you use part of your home regularly and exclusively for your business, you can usually deduct it, either with the simplified $5 per square foot method (up to 300 sq ft) or by actual expenses. We work out which gives the bigger deduction.
When does an S corp election make sense?
Often once your business profit is high enough that the payroll tax saved on distributions outweighs the cost of running payroll and filing an extra return. We model it with your real numbers.
Where is your office?
Our office is at 411 Walnut St, Dunellen, NJ 08812, a short drive away. You can meet us there by appointment or work with us entirely online.
Book a free consultation
Fixed monthly fees and one dedicated accountant.
Sources: IRS home office deduction · NJ Division of Taxation. Last reviewed October 2026.