Tax Center

A wonderful toolbox of tax forms, filing requirements, tax calculator, refund tracker, and more!


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

Services Offered

Clients looking for accounting services like tax prep, payroll, or bookkeeping can trust in us.


Stay up-to-date on tax & accounting news, announcements, & advice at our blog.

Covid19 Update:  In an effort to stay healthy through the entire tax season, we will be suspending all in-house appointments until further notice. You may drop documents through the mail slot in our door upstairs or call 412-931-1617 to talk to a staff member.

Providing Accounting Services to the North Hills of Pittsburgh & Ross Township PA for over 30 years. Expect the best accounting, bookkeeping, tax preparation, and complete payroll services in Allegheny County.

We specialize in accounting & tax matters for both business and personal clients. 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.

Wexford PA Accountant - Tax Preparation Service
small business accounting in pittsburgh

Tax News You Can Use!

Are you eligible for the monthly Child Tax Credit in 2021?

Our Main Services


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


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!


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


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

Sectors We Serve

Whether you need help with filing your personal / family taxes or you need a  bookkeeper to manage your self-employed record keeping, we are here!

From accounting consultations to accounts payable & receivable, payroll accounting, sales tax reports, and tax planning, we can help your small business flourish & grow.

We assist corporations with general accounting needs including payroll processing, accounts payable & receivable, bookkeeping, tax planning, and tax preparation & filing.


If you run a non profit, our team can help manage your bookkeeping, tax filing requirements, account management and more.

Client Testimonials

Don’t take our word for it – here’s what our clients say:

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.


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

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!


From Our Blog

Make sure you know what’s going on in the world of accounting and taxes by regularly visiting our blog. Here’s a quick look at our most popular topics!

When you have your personal or business taxes prepared by an independent operator, what happens if that person “vanishes” – or dies? This is a concern nobody thinks about until it happens. Tax preparers can go out of business for any number of reasons, and it’s possible they won’t be in a position to tie up all loose ends with their clients.

In business, as in life, you should learn to expect the unexpected. Expenses can crop up seemingly out of nowhere, and if there isn’t cash on hand to meet them, potentially serious problems can arise for the business owner. Having an adequate cash reserve allows the business to take care of unexpected or emergency expenses and still operate smoothly.

Tax scams are not new or uncommon. Each year, scammers seem to get more creative with their threats and means of communication. Here is some information from on a new tax scam involving SSN numbers. In the latest twist on a scam related to Social Security numbers, scammers claim to be able to suspend or cancel the victim’s SSN. Here’s what you should know.

Pittsburgh’s Most Trusted Team for Accounting, Bookkeeping, & Tax Prep

4550 McKnight Rd. Suite 208, Pittsburgh, PA15237