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Practical tools. Quick answers. Less guesswork.

If you’re a contractor or construction business owner, you don’t have time to dig through generic tax advice. These resources are here to make decisions easier and keep you organized — especially around tax time.

Use the links below to access tools, track refunds, or prepare for your appointment.

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Years Serving

Financial Calculator

Need quick numbers for planning? Use our calculator library to estimate cash flow, debt payoff timelines, retirement savings, tax impact, and more.

Refund Tracker

Refund processing varies by state. Use our refund tracker to check the status of a federal or state refund.

What To Bring

Want a smoother tax appointment and fewer back-and-forth emails? Use our checklist to gather the key documents we typically need.

Ready to Get Your Construction Numbers Under Control?

If your WIP, job costing, or cash flow feels out of control, you don’t need more noise, you need clean numbers and straight answers. We work with contractors, trades, engineers, and architects to fix the books, clean up WIP, and cut tax surprises so you can focus on running jobs.

“d.f. o’brien & co. keeps our books clean, our WIP schedules accurate, and our tax planning proactive. Our bonding agent even commented on how much cleaner our financials look now.”

Mark Jensen Owner, Jensen Framing & Carpentry

As a woman-owned contracting business, we needed tighter control of our numbers. d.f. o’brien & co. cleaned up our books, improved our WIP reporting, and helped us qualify for better bonding on bigger projects.

Emily Carter Founder, Carter Construction & Design

“As a growing contracting company, we needed more than basic accounting. Their team provides guidance year-round — not just at tax time. We can bid confidently now that we understand our numbers.”

Robert Ortiz Operations Manager, Ortiz Mechanical Services