Nonprofit Tax Preparation

(Form 990 Series)

990 filings that keep you compliant and represent your mission well.

Your Form 990 is more than a tax form—it’s a public document that boards, funders, and donors may review.

Cornerstone CPA prepares nonprofit returns across the 990 series, helping you stay compliant and present your organization clearly.

Who This Is For

501(c)(3) and other tax-exempt organizations
Nonprofits with staff or volunteer bookkeepers who need CPA review and filing
Organizations that are growing and want confidence they’re “doing it right”

What's Included

1. Preparation and filing of the appropriate 990 series return:
- 990-N (e-Postcard) where eligible
- 990-EZ (for smaller orgs that qualify)
- Full Form 990 for larger or more complex organizations
2. Review of financial statements for consistency with the return
3. Checking key public-facing items (mission, programs, officer info, etc.)
4. E-file confirmation and copies for your board
5. Email support for questions related to the filed return

How it Works

15-Minute Discovery Call (Free)

Quick call to learn about your business and see if we’re a good fit.

Document
Upload

You provide:
- Prior-year 990 (if available)
- Year-end financial statements
- Board list and other required details

Preparation & Review

We prepare the draft 990 and walk through it with you—especially the public-facing sections—to make sure it aligns with your story.

Filing &
Follow-Up

We e-file, provide confirmation, and send board-ready copies as needed.

PRICING

Typical starting fees:

1. 990-EZ: from $650
2. Full Form 990: from $1,850
3. 990-N (e-Postcard): typically $100 as a stand-alone one-time service

(often included or discounted when bundled with other services)