Mountain West Advisors

Mountain West Advisors describes itself as a boutique CPA firm focused exclusively on nonprofits. Mountain West Advisors, LLC is based in Littleton, Colorado. Use this page to see what it offers and what to ask before you hire a nonprofit audit firm.

Services

• Audits, reviews and compilations
• Form 990, 990-EZ, 990-N, 990-PF and 990-T
• Tax-exemption filings for new organizations
• Financial guidance and IRS issue resolution

About the firm

Mountain West Advisors was founded in spring 2023 by Erik Ladewig, CPA, who has more than 14 years of nonprofit accounting, audit and tax experience, including work with housing authorities. It is a member of the AICPA and the Colorado Society of CPAs.

Who it works with

The firm works with nonprofits from start-ups to established organizations, from an office in Littleton, Colorado, and uses cloud-based, paperless systems.

Services and how engagements work

Audit work starts with planning, a risk assessment and internal-control testing, followed by interviews with staff and board members and regular updates. Besides audits, reviews and compilations, it prepares every version of Form 990, helps new organizations file for tax exemption and resolves IRS issues. Its site does not mention Single Audits, so ask if you spend federal awards.

Firm details checked on its website on October 8, 2026.

Before you hire an auditor

• License in your state. Audits are performed by licensed CPA firms. Confirm the firm can practice in your state, especially if it works with you remotely.
• Peer review. Ask for the firm’s most recent peer review report.
• Single Audit. If your organization expends $1,000,000 or more in federal awards in a fiscal year, it needs a Single Audit under 2 CFR 200.501. Ask whether the firm performs them.
• Scope and fee. Ask what the engagement letter covers (audit, Form 990, management letter) and how the fee is set.

Details come from the Mountain West Advisors website, checked October 8, 2026.

Colorado nonprofits, including newer ones, that want an audit or review and their Form 990 from a small nonprofit-only CPA firm.

Mountain West Advisors works in cloud-based, paperless systems and also helps new organizations file for tax exemption.

Good fit if: You are a Colorado nonprofit, including a new one, wanting an audit or review and your Form 990.

Watch for: A young firm with a small team; no prices published.

Nonprofit single audits on record: None on record (founded 2023; ask if you need a Single Audit)

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