For 30 years and counting

PROVIDING ACCOUNTING SERVICES TO THE NORTH HILLS OF PITTSBURGH


EXPECT THE BEST ACCOUNTING, BOOKKEEPING, TAX PREPARATION, AND COMPLETE PAYROLL SERVICES IN Ross Township & ALLEGHENY COUNTY

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TAX CENTER

A wonderful toolbox of all your tax needs from forms, requirements, calculators, and more!

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TAX FAQS

Get answers from our pros for frequently asked tax-related questions.

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SERVICES

Clients looking for accounting services like tax prep, payroll, or booking can trust in us!

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March 12, 2025
The Dirty Dozen represents the worst of the worst tax scams.
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February 12, 2025
by Maureen Leddy, Thomson Reuters February 6, 2025 8 minute read
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September 26, 2024
Don’t let the process of starting a new business deter you from your future success! While it may seem overwhelming, the IRS has provided a number of great resources to help brand-new business owners understand their tax responsibilities. Below are some tax basics for setting up a new business: Choose a business structure The type/form of a business determines which income tax return a business will need to file. The most common business structures are: Sole proprietorship : An unincorporated business owned by an individual. There’s no distinction between the taxpayer and their business. Partnership : An unincorporated business with ownership shared between two or more members. Corporation : Also known as a C corporation. It’s a separate entity owned by shareholders. S Corporation : A corporation that elects to pass corporate income, losses, deductions and credits through to the shareholders. Limited Liability Company : A business structure allowed by state statute. If a single-member LLC does not elect to be treated as a corporation, the LLC is a “disregarded entity,” and the LLC’s activities should be reflected on its owner’s federal tax return as a sole proprietorship. Choose a tax year A tax year is an annual accounting period for keeping records and reporting income and expenses. A new business owner must choose either: Calendar year : 12 consecutive months beginning January 1 and ending December 31. Fiscal year : 12 consecutive months ending on the last day of any month except December. If an individual files their first tax return using the calendar tax year and later begins business as a sole proprietor, becomes a partner in a partnership, or becomes a shareholder in an S corporation, they must continue to use a calendar tax year unless they get IRS approval to change it. Apply for an Employer Identification Number An EIN is also called a Federal Tax Identification Number and it is used to identify a business, much like a person’s social security number. Most businesses need one of these numbers, but some don’t. For example, a sole proprietor without employees who doesn’t file any excise or pension plan tax returns doesn’t need an EIN. The EIN checklist on IRS.gov can help business owners know if they need an EIN. Make sure all employees complete these forms when hired: I-9, Employment Eligibility Verification U.S. Citizenship and Immigration Services W-4, Employee’s Withholding Certificate Pay yearly business taxes The form of business you chose above determines what taxes should be paid and how to pay them. Check with your business accountant to find out what tax liabilities you are responsible for. Visit the state’s website Prospective business owners should also visit their state’s website for info about state tax requirements, as those may be different than federal tax obligations. Talk to a tax professional Before you fill out any paperwork or online forms to set up a new business, speak with a tax professional to make sure your forms are filled out correctly! Give us a call at 412-931-1617 or shoot us an email at info@cottonmather.com.
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Our team of Accounting & Tax Professionals is happy to provide you with our experience and expertise so that you can focus on more important things.


From personal tax preparation to full service payroll for small- & medium-sized businesses, we are committed to adding a personal focus to each and every service we provide. We work with all of our clients to understand their specific needs and deliver quality & reliable accounting services that will meet their unique situation. Our small, personal accounting firm has extensive experience working with creative businesses, service industries, and retail & health care accounting. With the highest standards of diligence & professionalism, our knowledgeable & friendly accountants will deliver timely, insightful, and responsive accounting & tax services for each and every client.


With our year-round availability and friendly approach to accounting & taxes, you’ll be happy you chose Cotton Mather Accounting Group for your personal and small business needs. We want to make a difference in the success of our clients whether they are individuals or companies and our dynamic and competent staff will provide responsive & professional services to ensure this commitment.

Our Main Services

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ACCOUNTING

Cotton Mather Accounting Group is a full service accounting company that serves business clients large and small throughout the Greater Pittsburgh area.

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TAX PREPARATION

Whether you are filing a personal income tax return or a complex & complicated business tax return, tax season can be a stressful time. Let our pros help!

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BOOKKEEPING

Specializing in bookkeeping services for small- & medium-sized businesses, we will provide flexible bookkeeping solutions so that you can focus on your business.

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PAYROLL

Whether you are a small business or large corporate company, you can save time & money and reduce stress with our inclusive payroll service.

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Client Testimonials

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Working with Chrissy was the smoothest and most pleasant tax experience I’ve ever had. At first I was a bit unsure if it made sense to work with a CPA in PA, given that I live in CA and also have state taxes in another state, but she came highly recommended, so I figured I’d give it a shot–and I am so glad I did! She is responsive, patient, thorough, and lovely to work with throughout.

SAM

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It is my pleasure to provide the highest possible recommendation for Chrissy and everyone at CMAG. My wife and I have received the biggest refunds every since switching to CMAG. Furthermore, they are very timely in every respect and Chrissy is always willing to make time for me to discuss tax strategies specific to my situation. I cannot be more pleased with CMAG.

DAN DELCAMPO
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I am lucky to have had Chrissy Brennan at Cotton Mather doing my personal taxes for 5+ years. I used to agonize over doing it myself; now I hand everything to her and she takes care of it quickly and efficiently. She even knows if I have missed something and follows up on it. Highly recommend, as long as it doesn’t make her too busy for me!


KATHRYN KIMBELL

Businesses We Work With