Flat-fee tax and accounting for small and medium-sized businesses — backed by 25+ years of CPA expertise and integrity you can count on.

Martin McCarthy, CPA founded Rose Tree Accounting in 1999 with one goal: to give small and medium-sized businesses access to the same level of financial expertise found at the largest firms — with the personal attention only an independent CPA can provide.
With prior experience as VP of Accounting at Chase Bank and Audit Manager at Citibank, Martin brings a depth of knowledge that directly benefits your business every day.
At Rose Tree Accounting, accountability isn't just a value — it's a promise. Just as you are accountable to your customers, we are accountable to you and your business. We meet on your terms, whether that's by Zoom, phone, or at your workplace. Every engagement is handled with precision, discretion, and a genuine investment in your success.


Clear, reliable accounting that keeps you in control of your numbers. We manage the financial details so you always understand where your business stands — and can make confident decisions about where it's going.

Accurate, on-time tax preparation backed by 25+ years of CPA experience. We handle your returns with the care and sound judgment your business deserves — so your taxes are done right, filed on time, and free of surprises.

We specialize in the businesses we know best: restaurants, construction firms, auto body and repair shops, used car dealers, and scientific R&D companies. Whatever your field, you get a CPA who understands your numbers and is committed to your success.
The meter is never running. We work on a flat, predictable fee — so you can call, ask questions, and get the help you need without watching the clock or dreading the invoice. You always know exactly what you'll pay.
Get the experience of a seasoned CPA — VP- and audit-level background, 25+ years in practice — at a price that makes sense for a small or medium-sized business. Big-firm capability, without the big-firm cost.
Honest advice, straight answers, and work done right. We treat your business as if it were our own, handling every engagement with the discretion and integrity you deserve from the person who manages your numbers.
Trusted by small and medium-sized business owners across Pennsylvania for over 25 years.
We provide tax preparation and accounting services for small and medium-sized businesses. Whether you need your taxes prepared accurately and on time or reliable accounting to keep your finances in order, Martin handles it personally with 25+ years of CPA experience.
No. Rose Tree Accounting works on a flat, predictable fee — never hourly. You can reach out with questions without worrying about a ticking clock or a surprise invoice. You'll always know what you're paying.
We specialize in restaurants, construction firms, auto body and repair shops, used car dealers, and scientific R&D companies. If you own a small or medium-sized business, Martin brings the expertise and personal attention your industry deserves.
Just click "Book a call." You'll be able to set up a no-obligation conversation where Martin learns about your business and shows you how Rose Tree Accounting can help.
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Rose Tree Accounting provides comprehensive tax and accounting services for small and medium-sized businesses across Pennsylvania. Your success is our commitment.