Business Tax Compliance Services
The Easy Way to Tackle Taxes
Tax season doesn’t have to be overwhelming. With Capstone Accounting & Tax, you get certified professionals who understand the complexities of business tax compliance–and simplify it. Whether you’re looking for S-Corp tax preparation services, are a partnership in need of guidance, or run a nonprofit and need filing assistance, our team keeps your taxes accurate, compliant, and submitted on time.
What Is Business Tax Preparation & Compliance?
Business tax preparation is the process of accurately reporting your company’s financial activity to the IRS and state agencies, but it’s more than just filling out forms. It’s ensuring your business is in compliance, your records are audit-ready*, and you’re not overpaying.
With our small business tax compliance, you get more returns prepared by licensed CPAs with deep experience across several industries, a streamlined process built for efficiency, and guidance during and after filing.
When paired with our business tax planning services, you’ll have a well-rounded strategy that supports your financial health year-round.
Our Business Tax Preparation Services
Entity Tax Returns
Full-service professional tax preparation for businesses, including the following entities:
- Partnerships (form 1065)
- S-Corporations (form 1120S)
- C-Corporations (Form 1120)
- Trust & Estates (form 1041)
- Homeowners Associations (form 1120H)
- Nonprofits & tax-exempt organizations (form 990/990-N)
- Retirement plan filings (form 5500)
- Estate & gift tax filings (forms 706 & 709)
- Heavy Highway Vehicle Use (form 2290)
All of our services are highly collaborative, which means when you share documents promptly and thoroughly, we’re able to move faster and deliver stronger outcomes.
Special Tax Projects & Filings
We also support complex and resolution services that require expert attention, such as:
- State or IRS tax notice responses
- Ownership transitions and business restructuring
- Real estate filings, including 1031 exchanges
- Stock compensation and deferred income reporting
- Multi-state and foreign tax filings
- Qualified Small Business Stock (Section 1202) compliance
- Opportunity Zones and tax-free exchanges
If you have a unique tax challenge, we’ve likely seen it before–and we’re ready to help.
Why Us for Corporate Tax Return Preparation?
- 250+ years of experience: With centuries of collective experience, we bring the trusted insight and technical depth you need to stay confident.
- Transparency: We clearly outline all services, timelines, and fees in your scope of work.
- We think beyond the form: Others simply provide business tax filing services; we flag issues early, position your business for smart financial decisions, and help you understand your tax position.
Secure, Streamlined, and Built for You
We’ve modernized our tax prep process through M-Files and Hubshare, two secure platforms that simplify document exchange and communication. You’ll have a centralized, secure portal for document upload and download, making it easy to get all necessary paperwork to our professionals.
If you’re using QuickBooks or other accounting software, we can connect directly to your financial records (with your permission), helping reduce manual uploads and time wasted going back and forth. In short, we make tax season easier, safer, and smarter.
Business Accounting Services
Get Started
See how our tax expertise helps you minimize liability and stay ahead year-round.
What to Expect
Submit an Inquiry
Start by filling out a quick form so we can learn more about your business and tax prep needs.
Send Documentation
We’ll send you a secure upload link so you can get your financial records and the last two years of tax returns to our experts.
Review & Consultation
Your Capstone CPA will review your submitted files, follow up with any additional questions, and send over an engagement letter that details timelines, scope, and fees.
Return Prep & Filing
We’ll prepare and review your return and file once you’ve given your final approval.
Post-Filing Support
We remain available for assistance with payment vouchers, notices, or extensions, even after your returns are submitted.
Frequently Asked Questions About Tax Prep
What’s the difference between tax prep and tax planning?
How long does the whole process take?
What if my bookkeeping isn’t up to date?
The Impact of Having the Right Team
We could tell you how trusted, responsive, and strategic we are, but we’d rather let our clients speak for themselves.
Additional Services to Explore
Accounting
From bookkeeping and payroll to a virtual CFO, our accounting services provide accuracy and clarity.
Valuations
The hard data you need to make smart moves, whether selling, planning a succession, or simply gaining a better understanding.
Audit & Assurance*
Get independent, objective evaluations that support regulatory compliance while strengthening stakeholder confidence.
Consulting
Strategic, real-world insights crafted with deep financial knowledge that helps you move forward with confidence.
Connect With Your Local Capstone Office
Our small business tax and accounting firm combines deep market expertise with a hometown feel, wherever you are. Visit us at one of our twelve conveniently located Capstone locations or ask about the virtual services we offer.
Oregon
Washington
Idaho
Colorado
Helpful Resources
Careers at Capstone
Looking for meaningful work opportunities in collaborative environments? Join a firm where people come first and where potential is valued. Browse our available positions today.
Partner With Us
We’re actively growing and always looking for like-minded firms to welcome into the Capstone Accounting & Tax family. If you’re looking for a succession solution that protects your team and legacy, let’s connect.
A Secure Process Built Around You
Working with our credentialed experts begins with a simple inquiry. After completing a short online form, we typically send a secure request to upload your prior two years of tax returns and relevant documentation. This information gives our professionals the context needed for productive planning sessions or accurate return preparation. From there, we provide a detailed scope of work and clearly outline next steps.
From your first upload to your final deliverable, we make every step of the process efficient, structured, and tailored to your needs.
The Capstone Ledger
We write the way we work: helpful, clear and grounded in real-life expertise. Check out our blog for financial insights, business advice, and tax tips that are jargon-free.
Day-to-day support.
Big-picture thinking.
Whether running a business, looking for integrated tax and wealth planning, or considering what’s next, Capstone Accounting & Tax is here to help you move forward with confidence. Let’s start a conversation that leads to real results.
