Announcement: Tellen Partners With Grant Thornton to Expand AI-Powered Audit Quality Capabilities. Learn more.

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Workflow Engine

Smarter Engagement Letters, Faster

Give your partners and engagement teams the experience of pressing one button to get a client-ready letter, without removing judgment from the process. Tellen connects to your existing CRM and engagement platforms, selects the right template from your library, auto-drafts the letter, and surfaces only the decisions that require a human call. Run a single letter or generate thousands in one batch. When it's ready, a built-in review, collaboration, and signing workflow takes it across the finish line.

Workflow Engine

Engagement Letter Run

Ready for review

Source HubSpot CRM and SharePoint before drafting Engagement Letter.

Template Selection

Template Auto-Selected: Audit & Tax Advisory

Human Decision

Human Review Required

Question Prompt

Conditional Question Prompted

Conditional question examples

Human call required
Has the fee been agreed with the client?01
Include advisory services beyond standard scope?02
Any matters requiring special disclosure?03

The Engagement Letter, Reimagined

Intelligent automation handles the heavy lifting. Your team stays in control of every decision that matters.

Your Data Does the Heavy Lifting

Tellen pulls entity details, service lines, signer information, risk profiles, billing terms, and deadlines directly from your existing CRM or engagement platform, with no manual data entry required.

Always the Right Template, Always Up to Date

Tellen connects to SharePoint, OneDrive, or your document management system to pull the current approved template and clause library so every letter starts from the right foundation, not last year's version.

Smart Enough to Know What to Ask

Tellen compares the client profile against your firm's methodology, determines which template, sections, clauses, and questions apply, and surfaces only the decisions that require a human call.

Always a Human in the Loop

Before anything is sent, your team reviews every answer, edit, exception, and recipient. Once approved, Tellen routes the letter directly to the client for review and signature.

Humans stay in control before the client sees it.

Tellen can prepare the letter in one click, but delivery is gated by your team. Reviewers see what the agent used, what it inferred, where it needs judgment, and exactly what will be sent.

Approval queue

Partner review checklist

Selected template and rationale
Questions answered by CRM data
Open questions assigned to staff or partner
Clause insertions and fallback language
Recipients, signers, and delivery channel

Send is disabled until approval is complete.

The final click belongs to your reviewer, not the agent.

From draft to delivery, then signature.

Start with the workflow firms need today, and see where the signature experience is heading next.

Now

Generate and send after human approval

Create the draft, review the trace, approve the final, and send through your existing email or document workflow.

Q3 2026

DocuSign certification workflow

Planned DocuSign certification functionality will let approved letters move into a certified e-signature package with the same human gate before release.

Show your team what one click can feel like.

Engagement letters become a repeatable workflow: source, decide, ask, draft, review, approve, and send.

Book a Demo
FAQ

Frequently Asked Questions

Learn how Tellen’s AI Agent Workforce powers modern accounting firms.

What is Tellen’s AI Agent Workforce?

Tellen’s AI Agent Workforce is a suite of specialized AI-powered agents designed for accounting firms. These agents automate audit workflows, financial statement preparation, and footnote disclosures while ensuring security, compliance, and transparency.

How do Tellen’s AI agents help accounting firms scale?

By automating time-intensive tasks like attribute testing, financial reporting, and consistency checks, Tellen enables firms to handle more engagements without increasing headcount. This drives higher efficiency, capacity, and profitability.

Are Tellen’s AI agents secure?

Yes. Tellen deploys directly into your firm’s cloud environment (Azure, AWS, or GCP), ensuring that sensitive client data never leaves your control. The platform is also SOC 2 Type II certified, providing enterprise-grade security and compliance.

Can Tellen’s AI agents adapt to our firm’s unique workflows?

Absolutely. Tellen’s agents are dynamic learners. They are trained on your firm’s proprietary data, policies, and tech stack, creating a shared knowledge base that evolves with each engagement.

What accounting tasks can Tellen’s agents automate?

Tellen automates tasks across every audit stage, including:

  • Planning: Research and guidance from accounting standards.
  • Fieldwork: Attribute and control testing.
  • Reporting: Drafting financial statements and footnotes.
  • Review: Consistency checks and quality scans.

How does Tellen improve audit quality?

Tellen ensures accuracy and compliance by cross-referencing data, logging every AI decision, and providing 100% traceable outputs backed by verifiable sources—so your audit files are complete, consistent, and trustworthy.

What ROI can accounting firms expect with Tellen?

Firms using Tellen report significant time savings, revenue-per-employee growth, and improved engagement capacity. For example, one firm achieved 332% ROI and saved nearly 300 hours using AI agents.

How does Tellen's pricing work?

Tellen uses outcome-based pricing—we win when you win. Unlike typical SaaS subscriptions that charge regardless of results, our pricing model is tied to the actual value delivered to your firm. This ensures our incentives are aligned with your success, not just seat counts.

Does Tellen integrate with our existing software?

Yes. Tellen integrates with leading to scan your audit binder, detect quality issues, and help remediate them. We analyze workpapers and automate testing procedures through and our Microsoft Add-in — which brings these capabilities right into your existing workpapers. Our extensible integration framework supports connecting to additional systems.

How is Tellen different from generic AI tools?

Unlike generic AI or off-the-shelf automation software, Tellen is purpose-built for accounting. It is secure, compliance-focused, and continuously adapts to your firm’s unique processes, ensuring firm-specific intelligence.

How can we get started with Tellen?

You can schedule a demo or consultation via our Demo page. Our team will guide you through setup, deployment, and training so your firm can start scaling with AI-powered efficiency.