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Form title, form identifier, and version date to track applicability and revisions across tax years and internal workflows.
A properly completed Tax Model 145 reduces reporting errors, supports accurate IRS filings, and documents taxpayer certification. It creates an auditable record that can help avoid backup withholding, incorrect payee reporting, and penalties under IRC §6721 while aligning with ESIGN and UETA rules when handled electronically.
Teams that complete or manage Tax Model 145 include payroll, accounts payable, tax and compliance groups, and external vendors who receive reportable payments.
Signers typically include the payee (individual or authorized business officer), a preparer, and sometimes an authorized payer representative for internal verification.
Form title, form identifier, and version date to track applicability and revisions across tax years and internal workflows.
Name, EIN, contact information, and payer account or department code so reporting lines and return filers are unambiguous.
Full legal name, taxpayer identification number (TIN), business classification, and mailing address to support IRS matching and backup withholding decisions.
Payment type, tax year, gross amount, and any allocated tax-exempt portion, enabling correct mapping to information return boxes.
Statement for payee to certify TIN accuracy and backup withholding status, plus dated signature field for legal attestation.
Space for supporting documents (1099 backup, invoices) and internal notes that explain exceptions or verification steps.
| Field | Configuration |
|---|---|
| Authentication | Email + SMS code or stronger KBA for payee identity validation |
| Required Fields | Full name, TIN, signature, and date must be mandatory |
| Conditional Logic | Show backup withholding fields only when payee reports exemption status |
| Audit Trail | Record IP, timestamp, and signer actions for each transaction |
Ensure the platform supports secure storage, strong authentication, common file formats, and an auditable signing trail.
| 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 | Yes, 7-day trial | No | No | No | No |
| Bulk Send | Yes | Yes | Yes | Yes | No |
| Audit Trail | Yes | Yes | Yes | Yes | Yes |
| HIPAA Compliant | Yes | Yes | Yes | No | No |
W-9-style data should be supplied to payers when requested
Recipient and IRS due Jan 31 each year
Recipient copy due Jan 31
Paper filing due Feb 28; electronic Mar 31
Form 1040 due April 15 (Oct 15 with extension)
Payer requests completed Tax Model 145 from payee.
Confirm TIN and payee identity before acceptance.
Capture final signature and date; record audit trail.
Include validated records in year-end information return batch.
| Criteria | Tax Model 145 | W-9 |
|---|---|---|
| Purpose | collect payee data | request tin for payer |
| TIN Required | usually | |
| Notarization | rare | not required |
| Filing Deadline | depends on payer | provide upon request |
A brokerage collects contractor TINs digitally to prepare 1099-NEC
A clinic obtains vendor tax data before issuing payments