IFTA Filing Services for Interstate Carriers
IFTA filing services for interstate motor carriers — we license, decal, file every quarter, and clean up back-quarters when something fell through. From the team behind 3,000+ real DOT audits since 2015. Your IFTA filings come out matching your IRP, DQ files, and safety records before the auditor ever sees them.
We license, decal, file, and clean up past quarters.
Program essentials
- 48 contiguous states + 10 provinces
- Apply in your base jurisdiction
- File quarterly, even with zero miles
- Two decals per power unit, license copy in cab
- Late penalty: $50 or 10%, whichever is greater
Due dates you can't miss
- Q1 due April 30 (Jan–Mar)
- Q2 due July 31 (Apr–Jun)
- Q3 due October 31 (Jul–Sep)
- Q4 due January 31 (Oct–Dec)
Two different programs
- IRP: Registration fees apportioned by jurisdiction
- IFTA: Motor fuel tax reporting and settlement
- IRP does not include fuel taxes
- Many fleets need both
IFTA Quick Resources for Trucking Companies
Our comprehensive IFTA resource guide with deadlines, requirements, and checklists your team can use. Includes link to the current IFTA Tax Matrix.
Why Fleets Choose LBC Fleet for IFTA Filing Services
IFTA filing isn't difficult. It's just unforgiving. Miss a quarter, file with stale tax rates, or carry a paperwork mismatch between your distance records and your fuel receipts, and you end up paying penalties — or sitting through an audit you didn't see coming.
LBC files for fleets across multiple base jurisdictions and built the workflow behind 3,000+ real DOT audits since 2015. We license, decal, file, and clean up back-quarters. And we keep the records consistent across your IFTA, IRP, DQ file, and safety paperwork so one consistent story holds up under any state audit.
- One filing partner, every quarter — no scrambling to remember dates or rates.
- Back-quarter cleanup — we fix missed filings and minimize penalties where the rules allow.
- Audit-ready records by design — distance, fuel, and unit IDs reconciled before you file, not after a notice.
- Aligned with your DOT paperwork — your IFTA, IRP, and outsourced DQ file management tell one consistent story.
- Built by auditors — the same team behind 3,000+ real DOT audits since 2015.
What "done right" looks like
Most IFTA mistakes are documentation problems, not tax problems. Distance records that don't match fuel receipts, fuel receipts on consecutive days without matching miles, wrong unit numbers, missing trip details — these are the patterns that trigger audits and assessments.
Our process catches these before the filing leaves your hands. We reconcile your distance and fuel data each quarter, flag anything that won't survive an audit, and either correct the source records or document the variance. By the time the return is filed, your paper trail is consistent.
What the International Fuel Tax Agreement is
The International Fuel Tax Agreement is a cooperative tax program that lets interstate carriers report and pay motor fuel use tax through a single base jurisdiction, which then distributes tax to the states and provinces where you ran. The program is administered by IFTA Inc., a non-profit corporation representing member jurisdictions.
Your base jurisdiction is where your qualified vehicles are registered, where you have some travel, and where operational control and records are kept or can be made available. You apply for your license and renew it through that base jurisdiction. You receive one license to copy for each qualified vehicle and two decals per qualified vehicle each year.
Key facts
- 48 contiguous states + 10 provinces
- Apply in your base jurisdiction
- File quarterly, even with zero miles
- Two decals per power unit
- License copy in cab (electronic OK)
- Grace period: Jan 1 to end of Feb for new decals
Do I need IFTA?
You need an IFTA license if you are based in a member jurisdiction and operate a qualified motor vehicle in two or more member jurisdictions. A qualified motor vehicle is used for transporting people or property and meets any one of these conditions per 49 CFR 390.5:
- Two-axle power unit with gross or registered gross weight over 26,000 pounds (11,797 kg)
- Three or more axles on the power unit at any weight
- Used in combination when combined gross or registered weight exceeds 26,000 pounds (11,797 kg)
Recreational vehicles not used for business are not qualified vehicles.
Who does not need the program
- Intrastate-only operations
- Two-axle trucks at or under 26,000 pounds and not in a qualifying combination
- Recreational vehicles used only for personal use
IRP apportioned plates and IFTA are different
IRP (International Registration Plan) apportions your registration fees across jurisdictions so you can travel without individual trip permits. Registration fees do not include motor fuel taxes or fuel permit fees. IFTA is how you report and settle fuel use tax by jurisdiction. Many fleets need both programs, administered by different organizations.
Trip permits instead of IFTA
If you rarely leave your base jurisdiction, you may choose trip permits for occasional out-of-state runs instead of licensing for the program. Permitted distance and fuel are included in totals for fuel economy, but not taxed again on the return. Check your state's IRP office for trip permit requirements.
IRP vs IFTA
IRP: Registration fees apportioned by jurisdiction. Allows interstate travel without trip permits.
IFTA: Motor fuel tax reporting and settlement program.
Key point: IRP does not include fuel taxes. Many fleets need both programs.
Filing schedule
- Q1 due April 30 (Jan–Mar)
- Q2 due July 31 (Apr–Jun)
- Q3 due October 31 (Jul–Sep)
- Q4 due January 31 (Oct–Dec)
File even if no miles or fuel were purchased.
Penalties and interest
- Late penalty: $50 or 10% of tax due, whichever is greater
- Interest accrues monthly at IRS underpayment rate plus 2%
How the tax is calculated, in plain terms
The return calculates your fleet fuel economy for the quarter. Each jurisdiction's tax rate is applied to the fuel you consumed in that jurisdiction. You get credit for tax paid on fuel purchases. The net is what you owe or the credit you carry forward.
Fuel tax rates change every quarter, so always check the current IFTA Tax Matrix. Filing with a stale rate is one of the most common errors that triggers a state assessment.
For state-specific guidance, contact your base jurisdiction office directly.
IFTA audit triggers and red flags
Audits can be random, but certain patterns increase your chances of being selected. Understanding these triggers helps you maintain cleaner records and avoid unnecessary scrutiny.
What triggers an IFTA audit
- Inconsistent fuel economy quarter to quarter without explanation
- Zero or minimal tax due over multiple quarters
- Late filings or missed deadlines
- High out-of-state fuel purchases in low-tax jurisdictions
- Disproportionate mileage vs. fuel purchases by jurisdiction
- Random selection
Red flags auditors look for
- Missing or incomplete fuel receipts
- Handwritten logs that don't match ELD or GPS data
- Fuel purchases that exceed tank capacity
- Distance records that don't align with known routes
- Receipts on consecutive days without matching miles
- Wrong unit numbers on receipts
Protection: Document route changes and maintain consistent, complete records.
Recordkeeping checklist
Distance records:
- Trip dates, origin, destination, route
- Beginning and ending odometer or ECM
- Distance by jurisdiction
- Unit number or vehicle ID
Fuel records:
- Date, seller, location
- Gallons or liters, fuel type, price
- Vehicle/unit ID matching distance records
Retention: At least 4 years after return due date
IFTA recordkeeping that passes audit
Keep distance and fuel records that match what you reported. Save them at least four years after the return was due or filed. You can store records in any format that can be audited. If you use a vehicle tracking system, it should capture location data at least every ten minutes while the engine is on and preserve odometer readings and unit IDs.
Our IFTA filing process
Three phases. Same workflow whether you're starting fresh or cleaning up back-quarters.
Setup and licensing
- Confirm base jurisdiction eligibility
- Apply for IFTA license and decals
- Set up quarterly data collection
- Align with IRP and DQ paperwork
Quarterly filing
- Reconcile distance and fuel records
- Apply current tax matrix rates
- Flag and resolve variances pre-filing
- Submit return + payment to base jurisdiction
Cleanup and audit support
- Back-quarter filings for missed periods
- Penalty mitigation where rules allow
- Audit response and document production
- Ongoing record retention (4-year rule)
Ready for clean, on-time filings?
We handle licensing, decals, quarterly tax, and back-quarter cleanups. Your IFTA, IRP, and safety files stay aligned so everything matches under audit.
IFTA Filing Services FAQ
Do I need IFTA if I run intrastate only?
If you never leave your base jurisdiction, you do not need a license. Confirm any local fuel tax rules in your state.
My truck is under 26,000 pounds. Do I need IFTA?
Not if it is a two-axle vehicle at or under 26,000 pounds and not operated in a qualifying combination. Three-axle power units are qualified at any weight.
I have apportioned plates. Do I still need IFTA?
Yes, if you cross jurisdiction lines in a qualified vehicle. IRP is registration only and does not include fuel taxes.
What if I only make one trip out of state this year?
You may buy fuel trip permits for that jurisdiction instead of licensing for the program. Keep the receipts and distance records.
When are IFTA returns due?
Q1 due April 30, Q2 due July 31, Q3 due October 31, Q4 due January 31. File even with zero activity.
What are the late penalties and interest?
Penalty is $50 or 10% of tax due, whichever is greater. Interest accrues monthly at the rate set by the IFTA Articles of Agreement (IRS underpayment rate plus 2%).
What records do I need to keep?
Trip dates, origin and destination, route, beginning and ending odometer or ECM, distance by jurisdiction, unit numbers, and complete fuel receipts. Retain at least four years.
Do ELDs cover my required IFTA records?
ELDs can support mileage but there is no certified ELD for IFTA. Keep all required supporting data and fuel documentation.
Want IFTA filing off your plate?
LBC files quarterly returns and keeps your records audit-ready. We handle licensing, quarterly returns, and back-quarter cleanup.
Resources: IFTA Inc., Current Tax Matrix, FMCSA, FMCSA ELDs.
Related resources
DOT Compliance Resource Hub
Free checklists, guides, and interactive tools spanning DQ files, drug testing, hours of service, and IFTA.
Operating authority
Get your US DOT number or MC number. We handle the filings and renewals.
Got an audit notice?
For IFTA-specific response, see IFTA audit preparation. For broader DOT audits, see DOT audit preparation services.