Engagement Letter
Defines scope, deliverables, fees, timelines, and limitation of liability; serves as the primary contract between advisor and client.
A formal Tax Consulting Services engagement clarifies scope, deadlines, deliverables, fees, and responsibilities, reducing misunderstandings and exposure to penalties. It creates an audit trail that supports reliance positions and professional standards compliance.
Tax Consulting Services are used by a range of payers and recipients who need expert tax advice, compliance support, or representation.
Engagements vary by complexity — from one-off reviews to ongoing retainer arrangements — and should align with the client’s tolerance for risk and recordkeeping policies.
| Field | Configuration |
|---|---|
| Template | Create reusable engagement letter templates with editable client fields |
| Client Data | Map client intake fields to secure profile storage |
| Authentication | Select email, SMS code, or stronger signer authentication |
| Integrations | Connect to CRM, document storage, or accounting systems |
Ensure your platform supports secure signing, audit trails, and the integrations used by your firm and clients.
Verify that any chosen provider meets your compliance requirements (ESIGN, UETA, HIPAA where applicable) and retains reliable audit logs for each signed record.
Provide upon payer request; no fixed federal deadline
Recipient and IRS due Jan 31
Return due April 15 (Oct 15 with approved extension)
Due April 15 with automatic extension to Oct 15
Retain 3 years after hire or 1 year after termination
Client signs engagement and provides initial retainer
Client supplies documents and access needed for preparation
Advisor prepares draft returns for client review
Returns filed with IRS/state and confirmation archived
Defines scope, deliverables, fees, timelines, and limitation of liability; serves as the primary contract between advisor and client.
Structured data collection (financial statements, prior returns, K-1s) to ensure accurate preparation and to document reliance positions.
Signer verification methods and consent to electronic records to satisfy ESIGN/UETA requirements and establish intent to sign.
Detailed signing logs capturing timestamps, IP addresses, and actions to support record retention and potential audits.
Items addressing filing deadlines, required forms (1099s, W-9s), backup withholding triggers, and state registration where applicable.
Representation for notices, amended returns, and documentation to defend positions taken on returns or information filings.
| Criteria | Paper | e-signed |
|---|---|---|
| Legality | valid | valid (esign/ueta) |
| Authentication | witness/notary | audit trail/kba |
| Turnaround | slower | faster |
| Storage | physical files | encrypted digital |
| signNow | DocuSign | Adobe Sign | PandaDoc | HelloSign | |
|---|---|---|---|---|---|
| Starting Price | $8/user/mo | $15/user/mo | $14/user/mo | $19/user/mo | $15/user/mo |
| Free Trial | 7-day free trial | Varied | Varied | Varied | Varied |
| Bulk Send | Yes | Varied | Varied | Varied | Varied |
| Audit Trail | Yes | Yes | Yes | Yes | Yes |
| HIPAA Compliant | Yes | Yes | Yes | No | No |
| Envelope Cap | No cap | 100 envelopes/user/year | Varies | Varies | Varies |
Optica’s finance team adopted online signing to reduce turnaround on engagement letters.
Xerox integrated digital signing into NetSuite for tax approvals and templates.