1031 Compliance Intelligence
Don't Let a 45-Day Calendar Error Cost You $150,000.
The audit-proof compliance engine for 1031 exchanges. Cryptographic timestamps, email deadline alerts, and audit-ready documentation.
How It Works
Three steps. Full control.
Set Your Exchange Profile
Capture Day 0, entity type, extension status, and contact routing.
Track Deadlines
45-day and earlier-of 180-day clocks update continuously with timezone-aware logic.
Export Evidence
Identification letter artifacts, delivery logs, and timestamped proof in Audit Vault.
Live Risk Snapshot
Always watching your critical windows.

Operational Assurance
One missed midnight can collapse tax deferral.
Sentinel continuously evaluates your 45-day identification and 180-day exchange windows against entity status, filing extension flags, and timezone edge cases.
Schedule sync
Recalculates when you save profile changes
Audit readiness
Always-on vaulting
The Live Pulse
The countdown, identification compliance checks, outbound alerts, and entity-aware deadline logic all update as your deal evolves.
Clock Integrity
5 days left to identify
Urgency ramps from Safe to Critical as your identification window shrinks. Reminders keep pace so nothing slips by quietly.
Compliance & deadline logic
- 3-property & 200% rules checkFlags whether your list fits the three-property cap or must pass the 200% aggregate FMV test before you sign an ID letter.
- Entity-AwareIndividual, Partnership/LLC, S-Corp or C-Corp, 180-day cap checks tax return due date plus extension election.
Real-time alerts
Stakeholder routing keeps investors, QIs, and advisors aligned as deadlines tighten.
Inbox alertCall alert
Subject: 1031 Reminder: 45-Day Identification - 5 days remaining.
Clock Controls
Edit key dates - Sentinel auto-reschedules reminders.
Immutable Audit Trail
E-signed letters, timestamped in your Audit Vault.
Sentinel Logic
Validation logic your tax counsel can trust.
Sentinel validates every identification pathway before you generate and e-sign identification letters. Each warning is backed by rule-level evidence and preserved in your Audit Vault.
3-Property Rule
Submit up to three candidate replacement properties, regardless of fair market value, while preserving the 45-day identification safe harbor.
200% Rule
If you identify more than three properties, Sentinel validates that the aggregate FMV does not exceed 200% of the relinquished property FMV.
Professional Workflow
Built for CPAs and Qualified Intermediaries.
Manage active exchanges with clearer deadline visibility, coordinated notifications, and downloadable evidence from Audit Vault when records are needed.
Exchange Oversight
Deadline visibility per exchange
Collaboration
CPA + QI contact routing
Evidence Export
Downloadable audit-ready records
Simple Pricing
$149
Per Exchange
No subscriptions. Pay once, protect the full exchange lifecycle. CPAs and QIs use the Pro Dashboard free.
FAQ
Common questions from exchangers.
Quick answers about deadlines, alerts, and Audit Vault records.
How are the 45-day and 180-day clocks calculated?
Sentinel computes both tracks from Day 0 close date, tax filing profile, extension status, and investor timezone.
How are deadline reminders delivered?
Sentinel sends scheduled deadline reminders by email. Optional phone numbers, if provided, will be used for manual, human-initiated voice outreach related to exchange deadlines—not for marketing calls, automated SMS, or prerecorded robocalls. Only provide numbers you are authorized to contact.
What is stored in Audit Vault?
Identification letter artifacts, delivery logs, and supporting records are retained for retrieval and audit preparation.
Is Sentinel legal or tax advice?
No. Sentinel is a compliance workflow utility. Final decisions should be confirmed with your Qualified Intermediary and tax professional.