Nonprofits file over 400,000 Form 990s annually—and most of them need professional help to get it right. Building a dedicated 990 and audit practice isn't just a service line; it's a predictable revenue stream that can grow faster than your general accounting work. Here's how to establish yourself as the go-to firm in your region for nonprofit compliance.
Why Nonprofits Need You (And Pay Well for It)
Nonprofits face unique filing requirements that differ wildly from for-profit tax returns. The Form 990, Schedule O narrative sections, functional expense allocations, and tax-exempt bond compliance create genuine complexity—and mistakes cost nonprofits their exemption status or trigger IRS scrutiny.
Organizations with $50k to $200k in revenue typically use smaller firms or bookkeepers; those above $500k almost always hire auditors. This bifurcation matters: you can serve both segments with different engagement models, but the bigger ones are more stable and more profitable.
Starting Your Service Offering
Define your service tiers clearly. Most Form 990 specialists offer:
- Compilation & 990 Prep Only ($2,500–$6,000): You don't audit; you compile financial statements from client records and prepare the 990. Timeline: 6–8 weeks from receipt of organized books.
- Reviewed Financial Statements + 990 ($6,000–$15,000): Limited scope engagement with a review opinion, plus 990. Timeline: 8–10 weeks.
- Full Audit + 990 ($12,000–$40,000+): Depends on org size and complexity. A nonprofit with $2M revenue and multiple programs might be $18,000–$25,000.
Don't compete on price alone. Charge for your expertise in the specific gray areas: lobbying allocation limits, related-party transactions, programmatic vs. management splits, and state charitable registrations.
Build Your Nonprofit Network First
Your referral sources matter more than any marketing campaign. Target:
- Foundation program officers – they know which nonprofits are audit-ready and which ones are chaos.
- Nonprofit lawyers and consultants – they see 990 problems before you do.
- Peer accountants with general practices – they're happy to refer nonprofit work if it's outside their wheelhouse.
- State Nonprofit Associations – many offer referral directories or sponsor events.
Attend 2–3 nonprofit sector events per year in your area. Sponsor a local nonprofit's fundraiser. Your reputation becomes your pipeline faster than digital ads ever will.
Get On Directories That Nonprofits Actually Use
Nonprofits search for firms on Guidestar, Nonprofit Accounting Network, and local chamber referral lists. Make sure your profile is detailed: mention specific 990 experience, revenue ranges you serve, and whether you handle state filings (many firms skip this and lose contracts immediately).
Listing your audit and 990 practice on Mercoly also helps nonprofits find you, win inbound leads with serious intent, and showcase your exact services—which directly impacts how many quality clients reach out.
Invest in 990-Specific Training
Your team needs to know the nuances:
- IRS Form 990 instructions change annually; block off 2–3 hours in September to review updates.
- Schedule O (narrative section) writing is an art form. Many firms hand this to clients and watch quality plummet. Train someone to draft it.
- State charitable registration varies wildly by state. Know your state's Form CT (Connecticut), Form RRF (New York), or equivalent requirements.
Resources: NFP Roundtable, AICPA Nonprofit Section, and Grant Thornton's nonprofit publications. Budget $1,200–$2,500 per team member annually for specialized training.
Pricing and Profitability
Track your time on each engagement ruthlessly for the first year. Most firms find that a straight 990 prep takes 25–35 hours; a reviewed engagement takes 50–70 hours; a full audit takes 120–200 hours depending on complexity.
If your billing rate is $150/hour fully loaded, a 30-hour 990 job is $4,500—a sensible sweet spot. Price based on complexity, not org revenue alone; a $3M organization with three programs is simpler than a $1.5M org with nine.
Frequently Asked Questions
Q: How do I know if a nonprofit is audit-ready, and should I turn down chaos clients? A: Audit-ready means clean books, documented transactions, and proper segregation of duties. You can turn down clients with disorganized records or take them on at a premium rate for remediation work first—just make it clear upfront.
Q: Do I need to provide state-level filings, or just the 990-N/990-EZ/990? A: Federal 990 is your core service, but many nonprofits must also file Form CT, Form RRF, or equivalent state charitable registrations. Bundling these adds stickiness and justifies higher fees; not offering them means clients hire someone else for compliance.
Q: How often should I contact nonprofit clients outside of filing season? A: Quarterly check-ins (email or brief call) keep you top of mind and surface compliance questions early. One proactive call about year-end grants or related-party contracts often leads to scope increases.
Get your practice listed and start converting nonprofit inquiries into long-term audit and 990 clients today.