New Vehicle Loan Interest Deduction

 

I have been looking at individual tax changes for 2025 returns as well as changes starting anew in 2026. We may do several posts covering the changes likely to affect the most people.

I will start with one that may affect me: the new vehicle loan interest deduction.

My car has been reliable, but it is getting old. There comes a point with older cars where regular maintenance instead changes to regular repairs. I may or may not be there yet, but I am paying attention. What I know is the next car will not be cheap.

So, what is the tax change?

First, it is a deduction, not a credit. As we have discussed before, a credit is worth more than a deduction (a credit is dollar-for-dollar, whereas a deduction is a dollar-times-the-tax-rate). We will take it, though.

Second, it is not an itemized deduction. This is important, because introducing something as an itemized deduction is as much political sleight-of-hand as a real tax break. How? Easy. Let’s say that you are married, and the sum of your taxes, mortgage interest, and contributions is $25 grand. The tax Code spots you $31,500 just for being married (this amount is called the standard deduction). Which number will you use: the actual ($25,000) or the standard ($31,500)? The standard, of course, because it is the bigger deduction. Now someone can yammer that your mortgage interest is deductible – but is it really? I would argue that it is not, because the $31,500 is available whether you have a mortgage or not. Calling it deductible does allow for political blather, though.

The vehicle loan interest deduction is taken in addition to the itemized/standard deduction. It will show up on line 13b (see below), after the standard deduction/itemized deductions on line 12e. Our married couple will be deducting $31,500 (the standard) plus the allowable new vehicle loan interest.

Third, the deduction is not limited to cars. Technically it applies to “qualified passenger vehicles,” a term that includes the usual suspects (cars, trucks, SUVs, vans, minivans) as well as motorcycles. I am not as clear on campers, although the 14,000-pound limitation might kick-in there.

Fourth, it must be a new vehicle, which the Code refers to as “original use.” Not surprisingly, there is a special rule to exclude dealership demo use.

Fifth, you must have bought the vehicle after 2024. The deduction expires (unless a future Congress extends it) after 2028. Note that I said “bought.” A lease will not work.

Sixth, the deduction is for personal use of the vehicle, and the personal use must exceed 50 percent. While this may sound strict, it is not. Deductions for business use of a vehicle might take place under other areas of the tax Code, so it is possible that you will be deducting some of the interest as a business deduction (say as a proprietor or landlord) and the personal portion under this new deduction. You decide how to chop-up and report the numbers (some business, none business), and you cannot deduct the same interest twice. The behind-the-scenes accounting might be a mess, but you have the concept. There is also a favorable rule concerning personal use: such use is decided when you buy the vehicle. Later changes in use will be disregarded.

Seventh, the deduction is available to individuals, decedent estates, (certain) disregarded entities and nongrantor trusts. An estate is not immediately intuitive (why would a deceased person buy a vehicle?), but it refers to someone passing away after buying a vehicle qualifying for the deduction. A nongrantor trust generally means a trust that files its own tax return. Personal use would be measured by the beneficiary, as a trust cannot drive a car.

Eighth, there are some housecleaning rules. For example, you cannot pay interest to yourself or – more accurately stated – to a related party. The Code wants to see a lien securing the loan on the vehicle. There are also rules on add-ons (think extended warranties), lemon law replacements, subsequent loan refinancings, and no-no rules on negative equity on trade-ins.

Ninth, final assembly must occur in the United States. You may want to check on this before buying the vehicle. I have already checked on my next likely vehicle purchase (a Lexus).

Tenth, the deduction limit is $10 grand. It doesn’t matter if you are married or single, the limit applies per return and is $10 grand. Seems to me that marrieds filing separately got a break here. File jointly and cap at $10 grand. File separately and cap at $20 grand. Such moments are rare in the tax Code.

Eleventh, if you make too much money, the Code will phase-out the deduction you could otherwise claim. Too much begins at $100 grand if you are single or $200 grand if you are married filing jointly. Hit that limit and you phase-out at 20 cents on the dollar (rounded up).

Twelfth, you must include the vehicle VIN on your tax return. Leave it out and the IRS will simply disallow the deduction and send you a bill for the additional tax.

Finally, Congress and the IRS prefer that anything which moves be reported on a Form 1099. The problem here is that the tax bill was signed midway into 2025, meaning that banks and loan companies would have to make retroactive changes for 1099s issued in 2026. In light of this, the 2026 reporting (for tax year 2025) has been relaxed a bit: you may have to go to a website to get the interest amount rather than receiving a formal 1099, for example. Do not worry, though: the normal 1099 reporting will be back in full force in 2027 (for the 2026 tax returns).

My thoughts? I would neither buy or not buy a vehicle because of this deduction, but I am happy to take the deduction if I bought and financed. The $10 grand limit seems high to me, but - to be fair - I avoid borrowing money. I suppose $10 grand might be a backdoor way to allow for two vehicle loans on the same tax return (think married filing jointly). I do know that - unless one is making beaucoup bucks - spending $10 grand on vehicle interest does not immediately appear to be sound household budgeting.

And there you have the new vehicle loan interest deduction.

Why Do We Keep Vehicle Logs?

  

November proved to be an interesting month here at Galactic Command. Everything changes; we have changed; there is sadness about the change. We may talk about this someday, but for today let’s keep our discussion to matters of tax.

Here is an easy one, but many get it wrong: can you estimate your auto expenses?

The use of estimates in accounting is prevalent: a bad debt reserve, an inventory write-down, even something as prosaic as depreciation.  It has to be this way, otherwise you could not get financial results out in time to be useful. For example, say you have a warranty program on a newer – and significant – product line. You may want to accrue a warranty reserve on this product line, but the line does not have sufficient track record to be statistically reliable.  I suppose you could skip a reserve altogether (not a good answer) or wait until there is enough history before issuing financials (also not a good answer).

Tax returns also use these numbers. Mind you, a tax return has a separate purpose from financial accounting - the purpose of a tax return being to separate you from your money. Depending upon, the IRS may flat-out tell you what accounting method to use. In most cases, though, tax and financial accounting coexist well enough.

There was a case in the 1930s that many tax advisors have studied: Cohan.

George Cohan was a famous Broadway star, producer and manager in the early part of the 1900s. He was known for his over-the-top entertaining of both fans and critics, and entertainment was a significant part of his business expenses. What George was not good at, though, was keeping receipts and records. He got audited, and the IRS proposed to disallow a raft of deductions because Cohan could not substantiate them. The IRS won before the Tax Board of Appeals (think the predecessor to today’s Tax Court).

Cohan had no intention of rolling over. He appealed.

And he won on his appeal.

The Court reasoned that approximating his expenses may be unsatisfactory, but an outright denial of his expenses was erroneous.

So, the Court estimated what his expenses would be. Mind you, there were some guardrails, such as the proving a right to deduct the expenses and providing some basis for the deduction (restaurant booking registers, for example), such that an independent person could agree that an expense was incurred and when.

This estimating of expenses has since been known as the Cohan rule.

But you know who did not like the rule? Congress. They wrote the following into the tax Code:

Section 274(d)

               (d) Substantiation required

No deduction or credit shall be allowed—

(1) under section 162 or 212 for any traveling expense (including meals and lodging while away from home),

(2) for any expense for gifts, or

(3) with respect to any listed property (as defined in section 280F(d)(4)),

unless the taxpayer substantiates by adequate records or by sufficient evidence corroborating the taxpayer’s own statement (A) the amount of such expense or other item, (B) the time and place of the travel or the date and description of the gift, (C) the business purpose of the expense or other item, and (D) the business relationship to the taxpayer of the person receiving the benefit. The Secretary may by regulations provide that some or all of the requirements of the preceding sentence shall not apply in the case of an expense which does not exceed an amount prescribed pursuant to such regulations. This subsection shall not apply to any qualified nonpersonal use vehicle (as defined in subsection (i)).

Yes, it reads like gobbledygook but note the phrase “unless the taxpayer substantiates by adequate records or by sufficient evidence corroborating the taxpayer’s own statement.” Congress was saying that – for certain expenses – Cohan would be insufficient to save the day. One of those expenses was “listed property” which normal people refer to as a car or truck.

The Cohan rule will not save you when it comes to car and truck expenses. You have to keep records, such as a log or something similar for the business use of the vehicle.

Lisa Nkonoki deducted $22,936 for vehicle expenses on her 2009 federal tax return. Most of it was for the use of her Mercedes, but there were also rental cars during the year. She did not have a fixed office, meaning that she travelled – a lot.

The IRS wanted that mileage log.

Lisa refused. Off to Court they went.

Now the Court wanted the log.

Lisa told the Court that she had provided the log to the accountant who prepared her return, but the accountant failed to return it to her.

This placed the Court in a tough spot.

Her word alone was insufficient to substantiate the deduction.  The Court knew that her work involved travel – meaning that vehicle expenses were to be expected – but Section 274(d) would not let the Court estimate those expenses.

The Court disallowed her vehicle expenses.

I am curious why Nkonoki did not provide an alternative:

Using her e-mail, telephone and credit card records, could she have recreated an alternate log of her travel, including clients, dates and distances? We think of a log as being created at the moment (“contemporaneous”), but the Courts have noted that is not the correct meaning. Contemporaneous also encompasses other information (think e-mails) created at or near the time the expenses were incurred. Perhaps one transcribes that information into more usable form at a later time (such as a Tax Court hearing), but the information underlying such transcription was created at or near the time – that is, it was contemporaneous.

Our case this time was Nkonoki v Commissioner, T.C. Memo 2016-93.

The EV Tax Credit

I was reading an article recently that approximately 40% of Americans have not heard about the EV tax credits.

EVs are battery powered cars. We used to have hybrids, which sometimes used a motor and other times a battery. EVs by contrast are 100% battery powered.

If you are thinking about buying one for personal use, here are a few markers to keep in mind:

(1)   There was an OLD tax credit and now there is a NEW tax credit.

a.     The OLD credit went through April 18, 2023.

b.    The NEW credit of course is after April 18, 2023.

Both credits can get up to $7,500, so what changed was the measuring stick.

Before April 19, the EV had to be assembled in North America.

After April 18, one test became two tests:

·       The battery itself has to be manufactured in North America, and

·       Then critical minerals in the battery (cobalt and lithium, for example) must be extracted or processed in the U.S. or in a country with which the U.S. has a free trade agreement.

Notice that OLD $7,500 credit (assembled in North America) has become two NEW credits of $3,750 each. You can get to $7,500, but along a different route.

It matters. For example, the new Ford Mustang Mach-E only qualifies for one of the credits – only $3,750 – because its battery comes from abroad.

Some – like the Genesis GV70 – used to qualify for the old $7,500 credit but no longer qualify for anything under the new rules.

If you are considering an EV, please double check whether the vehicle qualifies. Here is the Department of Energy’s website:

https://fueleconomy.gov/feg/tax2023.shtml

(2)   Congress included some price caps on qualifying vehicles. These things are expensive, and Congress was trying to exert downward pressure.

To qualify,

·       A van, SUV or pickup truck must cost $80 grand or less.

·       Any other vehicle (a sedan, for example) must cost $55 grand or less.  

(3)   Starting in 2024, you will have the option of using the credit immediately when you purchase the vehicle. It would make for an easy down payment, I suppose.  

The heavy lifting is done behind the scenes, as the dealerships will register on a new website to initiate and receive the credits. If you are curious, that website is: 

https://www.irs.gov/credits-deductions/register-your-dealership-to-enable-credits-for-clean-vehicle-buyers  

(4)   For the first time, used EVs will qualify for a credit. This credit will not be as large as the one for new EVs, but it is not insignificant either. Here are the ropes:

·       The price must be $25 grand or less.

·       The car must be at least two years old.

·       The car qualifies only once in its lifetime.

·       The credit is up to $4 grand, limited to 30% of the price.

·       You can claim the used EV credit once every three years.  

(5)   There are income limits on both the new EV and used EV credits. Make too much money and you will not qualify.  

For example:

New EV

           Married        income < $300,00

                                       Single          income < $150,000

                            Used EV

                                        Married       income < $150,000

                                        Single         income < $75,000  

You can test for income either in the year of purchase or the immediately preceding year. I am thinking – to be safe – that one should generally go with the preceding year. It would be no fun to apply a $7,500 credit against the purchase of an EV and then give it back because you reported too much income on your 2024 tax return.  

(6)   Up to now, we have been talking about buying an EV for personal use. There is a similar credit if you lease rather than buy, but some rules are different.

·       Since the leasing company (and not you) owns the vehicle, the income test does not apply.

·       The credit requires the EV be manufactured by a “qualified manufacturer” rather than the two-step qualification discussed above for a purchased vehicle. This should result in a wider selection.

·       Mind you, the leasing company is not required to pass (all or any of) this credit on to you. Education is important here - and expect negotiation.  

The reason the rules are different is that this second credit is designed for businesses – rather than individuals – buying an EV. By bringing in a leasing company, we flipped from the first to the second credit.  

I am not in the market for a car myself.  If I were, though, I would go in a very different direction.