Getting your MC and staying legal in month one

Nothing about the first month of operating authority is hard. Almost all of it is a deadline you have not heard of yet, arriving on a date that is decided by two days you already know: the day FMCSA granted your authority, and the day the truck first rolled onto a public highway. Everything else in this guide hangs off those two.

The two dates that decide everything

Write both down the day you get them, in a place you will look at in eleven months. Federal paperwork is unusual in how much it keys off "the month of first use" rather than "the date you signed up", and the most expensive mistake a new carrier makes is assuming the authority date does the work.

What you owe	When it is due	Where the rule lives
Heavy highway use tax, Form 2290	The last day of the month after the month of first highway use for any vehicle over 55,000 lbs, then every August 31 for as long as the truck is on the road.	IRC §4481 IRS Form 2290
IFTA quarterly return	The last day of the month following each quarter, filed with your base state, which then distributes the tax to the jurisdictions where you reported miles.	IFTA Agreement, Art. V 49 U.S.C. §11501
UCR registration	Once, before you run interstate, then annually. The fee bands by fleet size and the fee rule changed on September 1, 2026, so read the current bands rather than a forum post.	49 U.S.C. §11504
MCS-150 company information	Kept current. One truck still has to file it, and the biennial registration survey now runs through the Unified Registration System's replacement, so the place you file has moved more than once since 2025.	49 CFR §390.19
New-entrant safety review	Inside your first eighteen months of operating under new authority, on FMCSA's timing rather than yours.	49 CFR part 385, subpart H

A truck first put into highway use in early October owes its first 2290 at the end of that October. The following August feels like the deadline — it is the deadline for every subsequent year — and the difference between the two is a tax that was never filed plus penalties on top of it.

Insurance before wheels

Authority is not granted on a promise of insurance; the filings have to be on file. The minimum liability limits for interstate property are set by regulation, and the instrument that proves you meet them is the MCS-90 endorsement on your policy — the paper that tells FMCSA the insurer stands behind you even where the policy's exclusions would otherwise leave the public with nothing.

• General freight, interstate: the federal floor in 49 CFR §387.9 has sat at $750,000 for decades. It is a floor. Brokers routinely require $1,000,000 auto plus cargo, and a contract that requires a million while you carry the floor is a contract you are breaching on the first load.
• Cargo and auto are different lines. Ask your broker for the certificate in the form the broker actually accepts, not the generic one, and keep the PDF where you can find it at a scale house.
• Anything with placards moves the minimum several times over, and hazmat authority carries its own file. Price the insurance before you price the freight.

A driver file before the first driver — even when the driver is you

This is where new carriers lose the new-entrant review. The driver qualification rules do not care that the company is one person and a kitchen table; if you are a driver-employee of your own carrier, the file has to exist and be reviewed.

• Qualification file — licence, medical examiner's certificate, record of duty status history, annual review of the driving record. 49 CFR §§391.23, 391.27, 391.43, 391.45
• Clearinghouse query — a full query before the first assignment and a limited query every year afterwards. It is free, it takes four minutes, and its absence is one of the most common findings in a new-entrant audit. 49 CFR §382.701
• Random testing — a drug and alcohol programme with random selection at the minimum annual rates, which a one-truck carrier buys through a consortium rather than runs alone. 49 CFR §§382.107, 382.305
• ELDT record — if the CDL was issued or upgraded recently, the entry-level driver training record has to be on file. 49 CFR §§380.601–380.603

The truck's own paperwork

Three things about the power unit itself get checked at the roadside and again in a review, and none of them are documents anybody hands you when you buy the truck.

• Periodic inspection — every 12 months, with the evidence retained. 49 CFR §§396.17, 396.21
• DVIR — a report at the end of each driving day the vehicle was used, and a record that defects were repaired or that no repair was needed. This is the one most often "kept in somebody's head", which is the same as not kept. 49 CFR §396.11
• Accident register — a list of every accident, indexed by date and name, with the required details on each and the supporting records held for the period the rule sets. 49 CFR §§390.15, 390.31

The state bills you did not know you owed

IFTA covers fuel. It does not cover the states that tax the truck by weight and miles, and a base-state return filed on time with a missing state underneath it is not a small error: the jurisdiction stops selling you permits and apportioned plates, and after that the load board stops being interesting.

• Kentucky (KYU) — $0.0285 a mile on power units over 59,999 lbs, filed quarterly by gross miles or IFTA miles, whichever you elect.
• Oregon and New York — weight-mile and highway-use taxes with their own quarterly rhythms; Oregon's applies to designated highways rather than every mile you ran.
• New Mexico and California — a road-use/weight-distance regime and a declared weight programme that have to be set up before they can be renewed.
• IRP apportioned plates — renewed on a schedule driven by your base state's anniversary, not by the calendar year.

Which of those you actually owe is a function of where you are based and which states you run through, which is exactly the question the deadline calendar asks once and then never stops tracking. Guessing at the list is how carriers find out about a state tax from a penalty notice.

What staying legal costs per week

Not much, if the dates are written somewhere that interrupts you. The first ninety days are a filing project; everything after that is ten minutes a week against a calendar that already knows the difference between a medical card that expires in three weeks and a random testing programme that has to be enrolled before you hire anyone at all. The carriers who get caught are not the ones who could not afford compliance. They are the ones who kept the dates in a memory that was also carrying a dispatch call and a broken reefer.