Car Write-Offs: S Corp vs LLC Rules Explained

You’ve seen the videos. Buy a Range Rover, write off the whole thing, drive away with a free luxury SUV courtesy of the IRS. It sounds incredible because it’s mostly nonsense, and the nuance that gets stripped out of those 30-second clips is exactly where business owners get burned.

The vehicle deduction is real, it’s valuable, and the rules shift depending on your entity, which is why the S corp vs LLC question matters more here than almost anywhere else in your tax planning. The deduction starts with a boring spreadsheet, not a dealership.

By the end of this, you’ll know the two methods for taking a car deduction, which one usually wins for your type of business, how the rules change when you’re an S Corp owner, and the one habit that makes or breaks the whole thing.

S Corp vs LLC: Know Which Entity You Actually Have

If you’re a sole proprietor or a single-member LLC, the IRS treats you identically for tax purposes. Same rules, same forms, same vehicle deduction mechanics. Many business owners are unaware of this and assume forming an LLC unlocked some new tax door. It didn’t. It unlocked liability protection, which is a different and valuable thing.

S Corps are where it changes. Once you’ve made that election, the vehicle sits in a different framework entirely, and paying for gas out of the wrong account can create a mess your bookkeeper will have to untangle.

So before you think about deductions, confirm your structure. And if you’re still weighing S corp vs C corp or wondering how much it costs to start an LLC in your state, sort that out first. Entity choice drives everything downstream.

Step 1: Track Your Miles. Everything Else Is Secondary.

This is the foundation. Not a suggestion, not a nice-to-have. Without a mileage log, you don’t have a deduction, you have a guess.

Both deduction methods require your business mileage. Both. There’s no version of this where you skip the tracking and still claim the write-off with a straight face.

How to actually do it:

• QuickBooks has built-in mileage tracking that runs in the background
• MileIQ and TripLog do the same thing
• After each trip, swipe to classify it as business or personal, note the purpose (“client meeting downtown”), done

It’s tedious, and nobody enjoys this part. But you can batch it, doing it once a day or once a week, and it takes minutes.

The reason this matters so much comes down to audits. If the IRS asks how you arrived at your number and you have nothing, you lose the deduction. A log with dates, destinations, purposes, and miles is your proof.

“I didn’t track my miles last year but I still want the deduction.”

We hear this constantly. You can reconstruct a log, and it needs to be built on real substance, not invented numbers. If you’re a photographer who shot at the same venue twice a month, that’s a defensible reconstruction: pull your calendar, pull your client records, map the distance, document it. What you cannot do is pick a number that feels good and write it down.

Pro tip: Start the log today, even mid-year. Partial documentation beats none, and next year you’ll have a clean full-year record.

Step 2: Pick Your Method (Standard Mileage vs Actual Expense)

Two paths. Here’s how they compare.

	Standard Mileage Rate	Actual Expense Method
What you deduct	A set rate per business mile (around 70 cents per mile at the time of writing)	Gas, oil changes, tires, repairs, plus depreciation, multiplied by your business-use percentage
Recordkeeping	Just your mileage log	Mileage log plus every receipt
Best fit	High-mileage businesses: real estate agents, photographers, anyone driving to clients and venues	Lower mileage, higher vehicle costs
Can you switch later?	Yes, you can move to actual in a future year	No. Start here, and you’re locked in

Run the math both ways. At year-end, have your accountant calculate both and take the bigger number. It’s not complicated, and it’s often surprising.

Quick example on the standard rate: drive 10,000 business miles at 76 cents, and you’re looking at about a $7,600 deduction. No receipts to hunt down, no depreciation schedules, no headaches.

One wrinkle worth knowing about 2026: the IRS raised the business rate mid-year, from 72.5 cents to 76 cents effective July 1. That’s unusual, and it means miles driven in the first half of the year get calculated at the lower rate. If you’re logging 2026 miles, split the log at June 30 so your accountant can apply each rate to the right period.

The Lock-In Rule Nobody Mentions

If you choose the actual expense method in the first year you use the vehicle for business, you’re stuck with it for that vehicle going forward. You can’t hop back to standard mileage.

Start with standard mileage, and you keep your options open. That flexibility has real value, especially if your driving patterns change.

Step 3: Understand Depreciation Before You Buy Anything

This is where the Range Rover hype comes from. Depreciation, Section 179, and bonus depreciation let you write off a chunk of the vehicle’s cost, and heavier vehicles get more favorable treatment than sedans.

But it’s not free money. A few things the hype videos leave out:

Your business-use percentage governs everything. If the car is 60% business, you deduct 60%. Not 100%. Personal miles don’t count and never will.

Depreciation only applies under the actual expense method. Choose it for the big first-year write-off, and you’ve locked yourself out of standard mileage forever on that vehicle.

A deduction is not a discount. Writing off $50,000 doesn’t put $50,000 back in your pocket. It reduces taxable income, and your actual savings depend on your bracket. Buying a vehicle you don’t need to save a fraction of its cost in taxes is a bad trade.

Business use can drop later. If your usage falls off, you may face recapture, meaning some of that deduction comes back onto your return as income.

Nobody should be buying a vehicle for the write-off. Buy the vehicle because the business needs it, then optimize the deduction.

Step 4: Get the Payment Source Right (This Is Where People Blow It)

For sole proprietors and single-member LLCs with the car titled in your personal name: pay for gas, repairs, insurance, and everything else from your personal account.

Why? Because the vehicle is personal property. Running those costs through the business bank account muddies your books and creates a bookkeeping cleanup nobody wants to pay for. You still get the deduction; you just claim it on your return based on your log and your method.

The car being titled in the business name is a separate conversation with its own set of rules.

Step 5: S Corp Owners, Use an Accountable Plan

Here’s the piece that separates informed S Corp owners from the ones leaving money on the table.

You’re an employee of your own S Corp. That changes the mechanics. Instead of deducting vehicle expenses directly on your personal return, you set up an accountable plan and have the company reimburse you.

How it works:

1. Adopt a written accountable plan. A formal policy stating the company reimburses employees for documented business expenses.
2. Submit expense reports. Monthly or quarterly, hand the company your mileage log with dates, destinations, business purposes, and totals.
3. The S Corp reimburses you. At the standard mileage rate, or for actual documented costs.
4. Everyone wins on taxes. The reimbursement is a deduction for the corporation and tax-free to you. It doesn’t show up as wages, doesn’t hit your W-2, doesn’t get taxed.

That last point deserves emphasis. Reimbursement under a proper accountable plan is not income to you. Compare that to taking distributions and trying to sort out the vehicle deduction on your personal return, which generally doesn’t work since unreimbursed employee business expenses are no longer deductible.

The catch: the plan has to be real. Written policy, actual documentation, timely submission, reimbursement tied to substantiated expenses. Wire money to yourself and call it mileage without backup and you’ve created taxable compensation plus a problem.

Note the pattern here. The mileage log shows up in every single method, every entity type, every strategy. It’s the load-bearing wall of the entire structure.

The Whole Process, Condensed

1. Confirm your entity. Sole prop and single-member LLC are the same for taxes. S Corp is different.
2. Track every business mile. App or spreadsheet, doesn’t matter, just do it consistently.
3. Run both methods at year-end. Standard mileage usually wins for high-mileage businesses. Take the bigger number.
4. Respect the lock-in. Actual expense method in year one means no switching back for that vehicle.
5. Keep personal car costs in the personal account if you’re a sole prop or single-member LLC.
6. S Corp owners: build an accountable plan and reimburse yourself properly.

Start with the log. Today. Not January, not when things slow down. Every week you skip is a week of deductions you can’t defend if anyone asks.

The Range Rover crowd sells the fantasy of a free luxury car. What actually works is less exciting and considerably more profitable over time: consistent documentation, the right method for your driving patterns, and the correct structure for your entity. That combination protects your deduction, keeps you compliant, and puts real money back in your business instead of a penalty notice in your mailbox.

Not sure whether standard mileage or actual expenses gives you the bigger deduction this year? Run both. If you’d rather have someone else run the numbers and set up the mileage tracking properly, that’s exactly the kind of thing we handle.

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About The Author:

Cameron Botes is the founder of BizBud, a tax and accounting firm built for content creators, influencers, digital nomads, and entrepreneurs building businesses across borders. A former professional soccer player across four continents, Cameron brings the same discipline, preparation, and pressure-tested execution from his athletic career into helping business owners plan ahead, stay compliant, and keep more control over their financial future.

Since founding BizBud in 2020, Cameron has grown the firm from a one-person practice into a team of CPAs and tax advisors serving hundreds of clients across the U.S. and around the world. With an MBA in finance and accounting, international business experience, and a team with backgrounds at firms like PwC, Deloitte, and EY, Cameron helps creators and founders simplify taxes, clean up their books, and build smarter systems so they can focus on the work they actually love.

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