#13 on Accounting Today's Fastest-Growing list - Filed is how you make #1.
Stephano Slack made Accounting Today's Fastest-Growing Firms 2026 list. Mergers add client books, but the tax team rarely scales at the same pace. Filed gives the team capacity without adding headcount: Prep drafts the return from source documents and syncs the populated file back into CCH Axcess, Reviewer cross-checks every line against the source, and Tax Planner turns the completed return into 80+ planning strategies the same week.
Your team is already running the equivalent of a small army by hand.
10,000+ returns x 3 hrs prep avg = ~30,000 hours of manual prep before a reviewer ever opens a file.
~12,000 hours
Three signals your firm is already sending.
We looked at Stephano Slack's recent activity, team structure, and the kind of volume your firm handles. A few things stood out.
You proved the thesis on audit
Stephano Slack and Seekr cut 401(k) audit time by 90% with AI. Filed is the same idea applied to tax - cut your entire Tax Prep workflow time in half.
Built for the firms growing fastest
Accounting Today named Stephano Slack #13 on its 2026 Fastest-Growing list with 47.69% growth. Filed is built for firms of the future and gives fast growers the operating leverage to scale per partner.
Post-merger workflow standardization
Each acquired firm brings its own prep habits. Filed Prep drafts every return from source documents - one workflow for the merged team going forward.
Reduction in review cycle time across firms processing 5,000 to 10,000 returns
Saved per return on average during the review stage
Anything that adds less time, more value. That's how I look at it. If I could do a thousand tax returns with just me, that's great.
Filed isn't one tool. It's the AI workplace for tax.
Prep
Turns messy client docs into review-ready drafts inside your tax software.
Reviewer
Cross-checks every line of the return back to source documents.
Advisor
Pulls 80+ planning strategies straight from the verified return.
Cowork
Connects the whole team end-to-end across the full workflow.