Klein Muskat
Individuals, families, trustees, and executors. Annual returns, fiduciary returns, and estate and gift filings.
- Individual income tax (Form 1040)
- Trust and estate income tax (Form 1041)
- Estate and gift tax
- Fiduciary accounting
New York and New Jersey
Accounting and tax for individuals, businesses, and real estate
KMM CPA Group is one firm with three practices: Klein Muskat for personal tax, trusts, and estates; Klein Mirsky for bookkeeping, payroll, and business tax; and Klein Real Estate for property owners and investors. Each works in its own area, and they work together when a client needs more than one.
Three practices, one file
Most clients need more than one of these. The owner of a business also has a personal return and, eventually, an estate. A trust may own a rental building. Each practice handles its part, and they work together on the rest.
Klein Mirsky
Owner-operated companies. Bookkeeping, payroll and sales tax, and the business return.
- Business income tax returns
- Monthly and quarterly bookkeeping
- Payroll and sales tax filings
- Financial statement preparation
Klein Real Estate
Investors, partnerships, and property-owning entities. Partnership returns, depreciation, 1031 exchanges, and K-1s.
- Real estate entity and partnership returns
- 1031 like-kind exchanges
- Cost segregation coordination
- Rental and property accounting
Not sure which practice you need?
Answer three quick questions and we will point you to the practice that fits. If your situation spans more than one, we coordinate on our side.
Question 1 of 3
Who is the work for?
Question 2 of 3
What do you need most right now?
Question 3 of 3
Does real estate play a part?
One group for your business, your finances, and your future
Your financial life reaches beyond a single tax return or a set of books. The group brings together bookkeeping, personal and business tax, trust and estate work, and real estate, so you can find what you need in one place.
Each practice contributes its own specialty, and the teams work together to understand your whole financial picture. Whether you are running a business, managing family finances, investing in property, or planning what comes next, you have one group of professionals who understand how those decisions connect and can support you as your needs change.
About the firmSpecialists in each field
Each practice works in one area, and the person who prepares your return does that work all year, in and out of filing season.
One point of contact
If your business, your trust, and your building are all with us, the practices share the file. You do not repeat yourself to three offices.
Planning ahead of the deadline
Books are kept current through the year and a projection is run in the fall, so the estimated payments are right and the April return holds no surprises.
Reviewed with you before filing
Every return is checked against the source documents, and you see it and sign off before it goes out.
What clients say
Industries we serve
The books, the deductions, and the filing calendar differ by industry. These are the ones we see most.
Real estateOwners, investors, syndications
Professional servicesLaw, consulting, agencies
Medical & dental practicesPractices and groups
Construction & tradesContractors and subcontractors
Restaurants & hospitalitySingle sites and groups
Retail & e-commerceStorefront and online sellers
Family offices & estatesMulti-generational wealth
NonprofitsExempt organizations
Upcoming federal deadlines
The next dates on the federal calendar for calendar-year taxpayers. Weekend and holiday dates roll to the next business day. State deadlines differ, and extensions change the picture, so confirm with your practice.
- Apr 15Every yearIndividual returns dueForm 1040 and first-quarter estimated payment.
- Mar 15Every yearS corporation and partnership returnsForms 1120-S and 1065.
Dates are computed for the current year and adjusted for weekends and federal holidays.
From our practices
Personal · Klein Muskat
When a trust files its own tax return, explained
A trust or estate can be its own taxpayer. When a fiduciary return is required, who pays the tax, and why trusts reach the top bracket so fast.
September 2026
Business · Klein Mirsky
S corp vs. LLC: how entity choice changes your tax bill
An LLC is a legal entity. An S corp is a tax election. How the choice affects self-employment tax, payroll, and paperwork, and when it is worth electing.
September 2026
Real estate · Klein Real Estate
1031 exchanges: the 45‑day and 180‑day clocks
Defer capital gains tax by reinvesting in like-kind real estate. How the two strict deadlines work, and the mistakes that disqualify an exchange.
September 2026
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