celebrating 90 years in business
Embracing the Past
Building for the Future
established in 1934
About Us
Proudly with over 90 years in business, our mission is still to provide professional and quality service that consistently exceeds the expectations of our clients.
Peter Shannon & Co. is committed to open communication and timely responses to our clients throughout the year so we can address any concerns or ideas.
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2025 Tax Considerations
Please click the title below to jump to the section you like to read. Individual Tax Changes Extension and Enhancement of Reduced Income Tax Rate Rate reductions, bracket changes. Under pre-Act law, for tax years 2018 through 2025, the Tax Cuts and Jobs Act (TCJA) temporarily modified the number of income tax brackets and reduced the…
FAQs about the research credit
Companies that engage in research and development activities may qualify for a federal tax credit for some of those expenses. The credit is complicated to calculate, and not all research activities are eligible — but the tax savings can be significant. Here are answers to questions you might have about this potentially lucrative tax break….
What you need to know about filing an extension — and minimizing penalties
If you don’t have everything ready to complete your 2025 federal individual income tax return by the April 15 deadline, you can request an automatic extension. Filing Form 4868, “Application for Automatic Extension of Time To File U.S. Individual Income Tax Return,” by April 15 can give you breathing room to file accurately and protect…
Debt vs. equity: Classification counts when shareholders put money into their corporations
If you operate your business as a C corporation, how you put money into your company — and how you take it back out — can have a major impact on your tax bill. Payments from shareholders to fund the business can either be classified as capital contributions (equity) or shareholder loans (debt). That might sound…
Are you eligible for mileage deductions?
Whether you’re filing your 2025 individual income tax return or planning for 2026, it’s important to know if you can deduct vehicle-related expenses. A change that was made permanent by last year’s One Big Beautiful Bill Act (OBBBA) limits who can claim a deduction for business mileage. But you might still be eligible, and deductions…
