Annual DOT Inspection Calculator
Free Compliance ToolEnter your last annual inspection date to instantly get your next due date, a live countdown, and your current FMCSA compliance status — plus the full inspection checklist required under 49 CFR §396.17.
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12 mo
Maximum interval between inspections
49 CFR §396.17
14 mo
Record retention requirement
49 CFR §396.21
7
Major systems inspected
Appendix A, Subpart B
OOS
Result if expired at roadside
Out-of-service order
How the Annual DOT Inspection Due Date Is Calculated
Under 49 CFR §396.17, every commercial motor vehicle must be inspected at least once every 12 months. The due date is calculated from the date of the most recent qualifying inspection — not from a fixed calendar date, registration date, or the vehicle's in-service date. This calculator takes your last inspection date and adds exactly 12 months to give you the legal due date, along with a live day-by-day countdown.
Before your inspection date arrives: the brake system is the most commonly cited out-of-service item during annual inspections. Use our Brake Inspection Compliance Checker to verify your brake system meets Appendix A standards before you schedule the official inspection.
What an Annual DOT Inspection Covers
A qualifying inspection must meet the minimum requirements of Appendix A to Subpart B of 49 CFR Part 396. These are the major systems inspectors check:
Brake System
App. A §1
Service brakes, parking brake, brake drums/rotors, brake hose, and air/hydraulic brake components.
Steering
App. A §2
Steering wheel free play, steering column, gear box, and power steering system condition.
Suspension & Frame
App. A §3–4
Spring assemblies, torque/radius rods, shock absorbers, frame members, and tire/wheel attachment points.
Lighting & Electrical
App. A §5
All required lamps, reflectors, and electrical wiring for visibility and signaling.
Tires & Wheels
App. A §6–7
Tread depth, sidewall condition, wheel/rim condition, and lug nut torque/security.
Coupling Devices
App. A §8
Fifth wheel, pintle hooks, drawbars, and safety chains/devices on towed units.
The annual inspection is separate from daily pre-trip and post-trip inspections, which are still required every day a vehicle is operated. Use our Pre-Trip Inspection Checklist to keep daily DVIR records audit-ready between annual inspections.
Understanding Your Compliance Status
The calculator above assigns one of three statuses based on how many days remain until your due date:
| Status | Condition |
|---|---|
| Current | More than 60 days remaining |
| Due Soon | 60 days or fewer remaining |
| Overdue | Past the 12-month due date |
Annual inspections and vehicle registration renewals often fall on different schedules. Our Registration Renewal Tracker keeps both dates visible side by side so neither one lapses unnoticed.
About This Calculator
Built by TruckComplianceHQ, a DOT compliance software company serving US motor carriers. The 12-month interval and required inspection items are based on 49 CFR §396.17 and Appendix A to Subpart B of Part 396, last verified March 2026. Browse our complete free DOT compliance tools for CDL expiry, DOT physicals, HOS, drug testing, and vehicle maintenance compliance.
This tool is for informational purposes only and does not constitute legal advice. Consult a qualified DOT compliance specialist for your specific fleet requirements.
Annual DOT Inspection — Frequently Asked Questions
How often is an annual DOT inspection required?
Under 49 CFR §396.17, every commercial motor vehicle must undergo a periodic inspection at least once every 12 months. The clock runs from the date of the last qualifying inspection, not the calendar year, so two vehicles inspected on different dates will have different due dates even if they were put into service the same week.
What counts as a qualifying annual DOT inspection?
A qualifying inspection must meet the minimum requirements of 49 CFR §396.17 and Appendix A to Subpart B of Part 396, covering brakes, steering, suspension, frame, tires, wheels, lighting, and other safety-critical systems. It can be performed by a certified inspector, a state inspection program recognized by FMCSA, or a periodic inspection program that meets the federal minimum standards. A roadside inspection that covers all required items and is properly documented can also satisfy the annual requirement.
What happens if my annual DOT inspection expires?
Operating a commercial motor vehicle past its annual inspection due date is a violation of 49 CFR §396.17 and will result in an out-of-service order if discovered at a roadside inspection. The violation is also recorded against your CSA Vehicle Maintenance BASIC score, which increases the likelihood of future roadside inspections and can contribute to a compliance review.
Where must annual DOT inspection records be kept?
Under 49 CFR §396.21, the inspection report or a copy must be retained at the location where the vehicle is maintained or based for at least 14 months from the date of inspection. A copy must also be carried in the vehicle, or a sticker/decal showing the inspection date and due date may be used in place of carrying the full report, depending on state requirements.
Can I use a roadside inspection to satisfy the annual inspection requirement?
Yes. A Level I, Level V, or other roadside inspection that covers all the components listed in Appendix A to Subpart B of Part 396 and results in a passing report can be used to satisfy the periodic inspection requirement, provided it is properly documented and dated. Many carriers track these dates manually, which is a common source of missed due dates.
Does the annual inspection due date reset to a fixed calendar date?
No. The due date is always 12 months from the date of the most recent qualifying inspection, not a fixed date like January 1. If a vehicle is inspected early, the next due date moves earlier as well, since it is calculated from the new inspection date rather than the original schedule.
Complete DOT Compliance Toolkit
If your inspection is overdue or due soon
An expired annual inspection puts the vehicle out of service if discovered at roadside and counts against your CSA Vehicle Maintenance score. Pre-check the brake system with our Brake Inspection Compliance Checker and confirm daily inspection records are current with the Pre-Trip Inspection Checklist before your inspection appointment.
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