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…
Options for forfeited employee FSA balances
Many businesses offer health care and dependent care flexible spending accounts (FSAs) as part of their employee benefits package. These plans provide valuable tax savings to employees and payroll tax savings to employers. If your company operates a calendar-year FSA with a 2½-month grace period, employees have until March 15 to incur eligible expenses for their…
April 15 is the deadline for more than just your income tax return
You know your 2025 federal income tax return is due April 15, 2026. But do you know what else has an April 15 deadline? If you don’t, you could miss out on valuable tax-saving opportunities or become subject to interest and even penalties. Making 2025 contributions to an IRA It may be 2026, but you can still…
What’s your potential business vehicle deduction?
If you used one or more vehicles in your business during 2025, you may be eligible for valuable tax deductions on your 2025 income tax return. Businesses can generally deduct expenses attributable to business use of a vehicle plus depreciation. However, the rules are complicated, and your deduction may be affected by factors such as…
4 types of interest expense you may be able to deduct
Personal interest expense generally can’t be deducted for federal tax purposes. There are, however, exceptions. Here are four, one of which is a new break under the One Big Beautiful Bill Act (OBBBA), which was signed into law in 2025. 1. Mortgage interest Perhaps the most well-known interest expense deduction, home mortgage interest may be…











