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Castro, Thresher & Oliveira, P.C.

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United States
Attleboro, MA
Castro, Thresher & Oliveira, P.C.

We are a full-service Certified Public Accounting firm located at 1382 County Street in Attleboro, MA. http://www.ctocpa.com/

Our goal is to successfully manage the tax and accounting needs of our clients so they can focus on what matters most. Castro, Thresher & Oliveira, PC is a greater Attleboro area Certified Public Accounting firm serving business and individual clients in a variety of accounting, financial and tax services. Our firm was established in 1972 and has a tradition of providing excellent service. We welcome you to explore our website further to discover more about our firm.

09/16/2026

TOMMY’S TAX TIP: Taxpayers who filed an extension earlier this year should keep the October deadline in mind. The extended filing deadline for 2025 individual tax returns is October 15, 2026, so now is a good time to make sure your return is on track.

It’s important to remember that an extension provides additional time to file your return, but it does not provide additional time to pay any tax that may have been due. Filing before the deadline can help avoid unnecessary stress and may help limit additional penalties and interest if a balance is owed.

If you or someone you know filed an extension and has questions about what to do next, we are here to help. Please call our office at (508) 222-3005.

09/09/2026

IN THE KNOW WITH CTO: As we move through the year, this is a good time to revisit the 2026 optional standard mileage rates and the importance of keeping accurate mileage records. Whether you use your vehicle for business, charitable, medical, or qualifying moving purposes, proper documentation is key to supporting any mileage-related deduction.

The rates below apply to electric and hybrid-electric automobiles, as well as gasoline and diesel-powered vehicles. Taxpayers using the standard mileage rate for a vehicle they own and use for more than one purpose will want to keep appropriate records to properly calculate the deduction. The IRS requires contemporaneous recordkeeping for mileage deductions which means recording the following information at or near the time of the trip: date, destination, business purpose, start and stop odometer readings and mileage. While complying with the IRS mileage recordkeeping rules can be tedious, you can simplify the process by utilizing technology instead of keeping a written log. Popular mileage expense apps such as MileIQ, TripLog and Everlance can be used to track mileage by simply taking photos of the odometer and uploading information.

09/07/2026

Today, we celebrate the hard work, dedication, and commitment of the people who help make our community such a special place to live and work. We are grateful for the small business owners, employees, families, volunteers, and neighbors who keep our local economy strong. We are especially thankful for the amazing group of professionals who work at Castro, Thresher & Oliveira as our success would not be possible without them.

We hope everyone enjoys a safe and restful Labor Day with family and friends. Thank you for allowing us to be part of this community we are proud to serve.

09/04/2026

CTO is proud to support the MAC Foundation’s 5th annual Putts for a Purpose Fundraiser Golf Tournament, benefiting Make-A-Wish Massachusetts and Rhode Island. This meaningful event will take place Friday, October 2, 2026, at Brookmeadow Country Club in Canton, MA, bringing the community together to help make life-changing wishes come true for children with critical illnesses.

The MAC Foundation created Putts for a Purpose to continue doing good in the community, and this year’s tournament supports an organization whose work brings hope, joy, and strength to children and families facing devastating illnesses. Every registration, sponsorship, and donation helps further that mission.

Please consider joining us in supporting this special fundraiser. To learn more about the event, make an online donation, purchase tickets, or become an event sponsor, please visit: birdease.com/MACfoundation.

09/02/2026

Just a friendly reminder that the deadline to pay your third quarter 2026 estimated taxes is just around the corner – September 15, 2026. Typically, you may be required to make estimated tax payments if you receive income that isn’t subject to tax withholding such as: self-employment or freelance income, rental or investment income, Partnership or S-Corporation earnings and gig economy or contract work. It is important to pay your estimated taxes on time to avoid IRS penalties and interest. And remember to make these payments electronically to comply with the new federal mandate. For more information about paying your federal tax estimates online click here: https://www.irs.gov/payments. State estimated tax payments can be made online through Department of Revenue (DOR) website. Need help? Please call our office at (508) 222-3005 and we will be happy to assist you.

08/28/2026

CTO is proud to support Empty Bowls Attleboro Area and its mission of fighting hunger, one bowl at a time. This year’s community event takes place Saturday, September 19, from 11 a.m. to 2 p.m. at the Newell Shelter in Capron Park, where guests can take home a handmade bowl created by local artisans while helping support hunger-relief efforts right here in the Attleboro area.

Every $25 ticket helps fund local organizations working to fight food insecurity, including the Attleboro Norton YMCA, Food n’ Friends, Hebron Food Pantry, and Murray Unitarian Universalist Food Pantry. Tickets include a handmade bowl, soup to-go by Morin's 1911, and a coupon for an ice cream cone from Bliss Restaurant.

Please consider joining us in supporting this meaningful local event. Purchase tickets, make a year-round donation, or become a sponsor by visiting https://emptybowlsattleboro.com/

08/26/2026

IN THE KNOW WITH CTO: Good recordkeeping can make tax time smoother and help support the deductions and credits you claim. Here are five receipts worth keeping: medical and dental expenses, charitable donations, business or work-related expenses, home improvements, and major purchases or property-related costs.

Why does it matter? Receipts help document what you paid, when you paid it, and why the expense may be relevant for tax purposes. A little organization now can save time, stress, and uncertainty later.

Record retention rules can vary depending on the type of document and your situation, so when in doubt, ask us before you toss or shred. For our full record retention guide, please visit: https://www.ctocpa.com/taxretention.php

08/21/2026

What a turnout!
Last week’s Paper Shredding Event was our fourth shred event since launching the program in January 2024 — and it was by far our most successful yet. The response was so strong that Mansfield Shredding Services needed two vans to haul away all of the documents collected!

We’re grateful to be able to offer our clients a secure and convenient way to dispose of confidential documents, and we’re so appreciative of the positive feedback we’ve received from those who participated.

A sincere thank-you to our clients for making this event such a success, and to Mansfield Shredding Services for their continued partnership and excellent service. We’re already looking forward to the next one!

08/20/2026

TOMMY’S TAX TIP: If you have a Health Savings Account (HSA), or you are eligible to open one, it may be one of the most tax-efficient tools available to help pay for healthcare expenses while also supporting your long-term financial plan.

HSAs are often known for their Triple Tax Advantage because contributions may reduce taxable income, funds can grow tax-free, and withdrawals are tax-free when used for qualified medical expenses. An added benefit is that unused funds can roll over year to year, making an HSA helpful for both current and future medical expenses.

Eligibility rules apply, contribution limits can change, and good recordkeeping matters. If you have any questions about how an HSA may fit into your tax plan, please contact us at (508) 222-3005.

08/12/2026

IN THE KNOW WITH CTO: Accounting software can be a helpful tool for small businesses—but small bookkeeping mistakes can become big year-end headaches. As accountants, a few common issues we often see include:
• Not reconciling accounts regularly: Monthly bank and credit card reconciliations help catch errors early.
• Misclassifying transactions: Incorrect categories can make reports misleading and tax preparation more difficult.
• Mixing business and personal expenses: Keeping them separate makes bookkeeping cleaner and records stronger.
• Over-relying on automation: Bank feeds and rules still need review to make sure transactions are recorded correctly.

Good bookkeeping helps business owners understand cash flow, make better decisions, and avoid a year-end nightmare.

We care about the businesses in our community and want to help with any questions you may have. Simply call us at (508) 222-3005.

Address

1382 County Street
Attleboro, MA
02703

Opening Hours

Monday	8am - 5pm
Tuesday	8am - 5pm
Wednesday	8am - 5pm
Thursday	8am - 5pm
Friday	8am - 5pm

Website

http://www.ctocpa.com/

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