Professional accounting, auditing, and compliance services for businesses and nonprofits in Post Falls, ID and beyond. We don't just serve — we partner.
Keystone Integrity Partners is a Post Falls, Idaho-based financial services firm led by Lisa Arellano, with over 34 years of hands-on experience in accounting, auditing, and compliance. We serve local businesses, nonprofits, and organizations that care about doing things right.
We believe healthy financials build resilient organizations. Whether you're a startup nonprofit needing IRS guidance or an established business seeking cleaner books, we bring clarity and confidence to every engagement.
From day-to-day bookkeeping to complex forensic audits, we provide the full range of financial services your organization needs to thrive.
Specialized and strategic services to ensure your organization is financially sound and audit-ready at all times.
Expert guidance on federal, state, and local regulatory requirements to keep your organization compliant and in good standing.
Certified bookkeeping and operational support to give you a clear, accurate picture of your financial health every month.
Official support services that keep your business operating legally and professionally at all levels.
Certified QuickBooks user providing setup, training, and ongoing support for your accounting software ecosystem.
From state registration to IRS approval, we guide you through every step of forming your nonprofit organization correctly.
Starting a nonprofit is an incredible way to make an impact — but the process of getting everything set up correctly with your state and the IRS can be confusing and time-consuming. That's where we come in. We'll help you get approved the right way so your organization can grow, receive donations, and qualify for grants.
We start with a no-obligation conversation to understand your goals and challenges.
We build a tailored service plan that fits your budget and operational needs.
We get to work — filing, reconciling, auditing, and keeping you compliant.
We remain your partner — always available, always proactive, always on your side.
Hear what our clients say about working with Keystone Integrity Partners.
Lisa helped us launch our nonprofit from scratch. The process was smooth, and we were approved on our first IRS submission. Incredibly knowledgeable and patient throughout.
We switched to Keystone after years of messy books. Within two months, our accounts were clean, our payroll was running on time, and we finally understood our finances.
The forensic audit Lisa conducted identified discrepancies we had no idea existed. Her thoroughness saved our organization significant financial exposure. A true partner.
Whether you're ready to hire or just have questions, we're happy to connect. Reach out via phone, email, or the form and we'll respond promptly.
We respond within 1 business day.