No Tax On Social Security

 

Is not. 

For decades, social security benefits were not taxable at all. 

This changed with the Social Security Amendment of 1983, with the intent to shore up the social security trust fund. Beginning in 1984, if one’s income exceeded certain stairsteps ($25,000 for singles and $32,000 for marrieds), then benefits could be up to 50% taxable. 

Flip the calendar and The Omnibus Budget Reconciliation Act of 1993 raised the taxable portion up to 85% and added two more stairsteps ($34,000 for singles and $44,000 for marrieds). 

COMMENT: The taxation of social security is Congressional pratfall. There are two separate calculations here. The first calculation starts taxing benefits at $25,000 (for singles; $32,000 for marrieds) up to 50 percent. If your income keeps going, then you hit the second stairstep ($34,000 for singles; $44,000 for marrieds) up to 85%. Fall in between these two phaseout zones and you may want to use software to prepare your return. 

COMMENT: BTW, Congress has never inflation-adjusted those 1984 or 1993 dollars. 

No tax on social security became a political slogan during the presidential election. I have heard the phrase repeated since then, but it is not accurate. 

It would be more accurate to describe it as an age-based deduction. 

Take a look at the tax provision in its feral state:

 

SEC. 70103. TERMINATION OF DEDUCTION FOR PERSONAL EXEMPTIONS OTHER THAN TEMPORARY SENIOR DEDUCTION

 

(a)(3)(C) Deduction for seniors

 

(i)                   In general.—In the case of a taxable year beginning before January 1, 2029, there shall be allowed a deduction in an amount equal to $6,000 for each qualified individual with respect to the taxpayer.

(ii)                Qualified individual.—For purposes of clause (i), the term ‘qualified individual’ means—

(I)                  the taxpayer, if the taxpayer has attained age 65 before the close of the taxable year, and

(II)                in the case of a joint return, the taxpayer’s spouse, if such spouse has attained age 65 before the close of the taxable year.

(iii)               Limitation based on modified adjusted gross income.

(I)                  In general.—In the case of any taxpayer for any taxable year, the $6,000 amount in clause (i) shall be reduced (but not below zero) by 6 percent of so much of the taxpayer’s modified adjusted gross income as exceeds $75,000 ($150,000 in the case of a joint return).

(II)                (II) Modified adjusted gross income.—For purposes of this clause, the term ‘modified adjusted gross income’ means the adjusted gross income of the taxpayer for the taxable year increased by any amount excluded from gross income under section 911, 931, or 933.

(iv)               Social security number required.

(I)                  In general.—Clause (i) shall not apply with respect to a qualified individual unless the taxpayer includes such qualified individual’s social security number on the return of tax for the taxable year.

(II)                Social security number.—For purposes of subclause (I), the term ‘social security number’ has the meaning given such term in section 24(h)(7).

(v)                 Married individuals.—If the taxpayer is a married individual (within the meaning of section 139, this subparagraph shall apply only if the taxpayer and the taxpayer’s spouse file a joint return for the taxable year.”

What do I see? 

•  There is no mention of social security benefits.
•  There is no mention, in fact, of retirement income at all.
•  You do have to be at least age 65 to qualify.
•  The deduction is (up to) $6,000 per qualifying individual.
•   Make too much money ($75,000 for singles and $150,000 for marrieds) and you start losing the deduction. The deduction phases-out completely at $150,000 (singles) and $250,000 (marrieds).
•  If you are married, you must file jointly. Married filing separately will not work here.
• The only mention of social security is that one must include one’s social security number on the tax return, otherwise the IRS will consider it a math error and send you a bill for taxes due.

What do I not see?

• No tax on social security.

I get it: for many if not most people, social security benefits would not have been taxable anyway because of the stairsteps, the increased standard deduction and the additional standard deduction for taxpayers age 65 and over. I would prefer that we use the English language with more precision, but such is not our fate. 

We didn’t even mention the insolvency of the social security system itself. 

Take advantage if you can, as the deduction has a shelf life of only four years. Granted, a future Congress can extend (and re-extend) this deduction ad infinitum, but I suspect that will not happen here.

 

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.