Write-Offs That Stack With the Standard Mileage Deduction (2026 Gig Driver Guide)

If you already take the IRS standard mileage rate, the useful question is not “what else can I throw at the car?” It is what is still a real business cost after the rate has done its job. Gas is finished. Insurance is finished. The phone you run Uber and DoorDash on is not finished. Neither is the airport lot you paid to wait in, or the interest on the loan for the car you drive for work.

2026 still has two business rates — 72.5¢ for miles driven January 1 through June 30 and 76¢ for miles driven July 1 through December 31. Those cents apply only to business miles. Everything on this page that is not a mile is an actual dollar, or a business percentage of an actual dollar. How the two halves become one Line 9 figure is in how to claim car expenses on Schedule C.

Step 1: Confirm you are on standard mileage for this car this year

This page is a deduction finder for drivers who already elected the standard mileage rate on a vehicle. One method per car per year. If you are adding up gas, insurance, and repairs and then multiplying by business-use percentage, you are on actual expenses. You still need a mileage log. You still can deduct parking and tolls. You cannot also multiply the same miles by 72.5¢ or 76¢.

First-year election and lease lock-in live in that comparison guide. Practical takeaway here: if this year’s return uses the rate, the extras below are the ones that usually survive. If this year’s return uses actual expenses, stop treating this article as a shopping list on top of cents per mile.

Step 2: List what the 2026 rate already covers so you do not double-dip

The IRS publishes one number so you do not have to itemize the cost of running the car. When you take it, those operating costs are spoken for.

Cost	With standard mileage (2026)
Gas, oil, maintenance, repairs, tires	Inside 72.5¢ / 76¢ — do not add
Car insurance and registration	Inside the rate — do not add
Depreciation (or a second “wear and tear” write-off)	Inside the rate — do not add. It also lowers basis if you later sell; that is a different article.
Car washes billed as operating the vehicle	Treat as inside the rate. Do not invent a third method.
Parking and tolls on business trips (unreimbursed)	Allowed on top
Business % of vehicle-loan interest	Allowed on top
Business % of vehicle personal property / ad valorem tax	Allowed on top
Phone, mounts, supplies, home office, health insurance, retirement	Not car operating costs — ordinary business / above-the-line items if you qualify

Double-dip looks like this: Line 9 already has miles × the 2026 rates, and then gas and Geico appear again on the same return for the same car. Examiners know that pattern. The honest stack is miles plus the extras that Publication 463 leaves outside the bundle.

Step 3: Add the vehicle extras Publication 463 still allows

These are still car costs. They are just not inside the cents-per-mile figure.

Business parking and tolls

Airport waiting lots while you are online, a meter at a hotspot you drove to for work, bridges and express lanes on a paid trip or between offers — if you paid and the platform did not pay you back, those dollars can sit next to the mileage deduction. Grocery parking and a personal E-ZPass month are personal. The full receipt-and-reimbursement walkthrough is parking and tolls with the standard mileage rate.

Interest on a vehicle loan (business percentage)

If the car is financed, the business share of the year’s loan interest can still be deducted when you use the standard rate. Business share follows the same fraction as everything else: business miles ÷ total miles on that vehicle. Personal-use interest stays personal. A paid-off car has no interest line. Lease payments are not this line — a lease on actual expenses is a different method.

Vehicle personal property tax

Some states and localities charge an ad valorem or personal property tax on the car itself. The business percentage of that tax can sit on top of the rate. Ordinary registration that is already treated as part of the standard-rate bundle is not a second deduction. When in doubt, the current Schedule C instructions and Publication 463 beat a blog table.

Illustration only, not a promise: 5,000 business miles through June 30 and 5,500 from July 1 is $3,625 + $4,180 = $7,805 of standard mileage. Add $240 of unreimbursed work parking, $180 of unreimbursed work tolls, and $210 of business-share loan interest and you have extras beside the rate — not a reason to add the gas total too.

Step 4: Add ordinary gig expenses that are not car operating costs

The mileage rate answers “what did it cost to point the car down the road?” It does not answer “what did it cost to run the business that uses the car?”

Item	Usual treatment if you qualify
Cell phone used for gig apps	Business percentage of the bill (and a dedicated work line at a higher percentage). Not 100% because Spotify was on the same plan.
Phone mount, charger, power bank used for the apps	Ordinary supplies / small equipment for the work. Keep the receipt and the purpose.
Hot bags, phone cables, clipboard, safety vest, water for riders if you actually provide it	Supplies. Personal groceries in the same bag are still groceries.
App store fees, mileage-tracker subscription, bookkeeping software used for this business	Office or other business expense. Personal Netflix is not.
Platform commissions you already netted out of income	Do not deduct again. If the 1099 is gross, the fee may belong as an expense — match how you reported receipts.

These items do not care whether you chose standard mileage or actual expenses. They are not a workaround for deducting gas. A $40 mount is a $40 mount. It is not $40 × 76¢.

Step 5: Check qualifying home office, self-employed health insurance, and retirement

These are the ones drivers skip because they do not look like “car.” They still stack with the mileage deduction when the separate rules are met. Details and neighboring write-offs are in self-employed tax deductions.

Home office (if it actually qualifies)

Regular and exclusive business use of a specific space, used as the principal place of the business (including substantial administrative work when you have no other fixed office). A kitchen table that is also dinner does not qualify. A spare-room desk you use only for scheduling, records, and the mileage log can. Simplified method is $5 per square foot up to 300 square feet on the current IRS simplified rule; the regular method uses Form 8829 and actual housing costs times the business percentage of the home. A qualifying home office can also change whether the first and last drives of the day are commuting; that analysis is not this page.

Self-employed health insurance

If you pay for your own medical, dental, or vision coverage and you are not eligible for a subsidized employer plan (including a spouse’s plan, in the usual reading of the rule), the self-employed health insurance deduction is typically an adjustment to income on Schedule 1 — not a Line 9 add-on. It has its own eligibility cap (generally limited by net self-employment profit). Confirm Publication 535 and the Schedule 1 instructions for the year you file.

Retirement (SEP IRA, Solo 401(k), SIMPLE)

Contributions to a plan you are allowed to use as a self-employed person reduce taxable income subject to that year’s IRS limits. Those limits change. Do not copy a dollar cap from memory; use the current IRS retirement-plan pages or a preparer. This is not a car expense and it is not inside 76¢.

Self-employment tax deduction

The deductible employer-equivalent portion of self-employment tax is also an above-the-line adjustment (Schedule 1), computed from Schedule SE. You get it because you have Schedule C profit, not because you chose a mileage method.

QBI (section 199A) is a later computation on qualified business income. Whether it applies to your 2026 return depends on current law and your numbers. It is not a receipt you add to Line 9.

Step 6: Put each item on the typical Schedule C or Schedule 1 line

Line numbers move if the IRS redesigns the form. On the current Schedule C they typically land here:

What you are claiming	Typical home
Standard mileage (first half × 72.5¢ + second half × 76¢)	Schedule C Line 9 — Car and truck expenses
Unreimbursed business parking and tolls	Usually with Line 9 or as travel — dollars, not cents per mile
Business share of car-loan interest	Line 16 — Interest
Business share of vehicle personal property tax	Line 23 — Taxes and licenses
Phone (business %)	Utilities / other expenses — not Line 9
Mounts, chargers, bags, small tools	Supplies or other expenses
Qualifying home office	Simplified worksheet or Form 8829, then the Schedule C office-expense area
Self-employed health insurance	Schedule 1 (adjustment to income), not Line 9
Retirement contribution (SEP / Solo 401(k) / SIMPLE)	Schedule 1, subject to that year’s limits
Business / commuting / other miles	Part IV (or Form 4562 Part V)

Part IV still wants the mile split even if you add a phone bill. Parking receipts do not replace total annual miles. The log habit that makes Line 9 and the extras checkable is the same five fields: date, destination or route, business purpose, miles, and a way to show total miles for the year.

Mistakes that look like stacking and are not

• Gas + insurance + the 2026 rates on one car, one year.
• A platform-reimbursed toll deducted again. If Uber already paid the bridge, that dollar is not yours.
• 100% of a family phone because the Driver app is installed.
• Home office on a shared couch so the first drive of the day becomes business.
• Multiplying a parking receipt by 76¢.
• One annual mile total × one 2026 rate, then a pile of extras to “make up” the other half.

Frequently Asked Questions

What can I still deduct if I use the standard mileage rate?

Unreimbursed business parking and tolls, business-share loan interest, and business-share vehicle personal property tax can sit on top of 72.5¢ or 76¢. Phone, mounts, supplies, a qualifying home office, self-employed health insurance, and retirement are separate from the car method. Gas, insurance, repairs, and depreciation are already inside the rate. See parking and tolls.

Can I deduct gas or insurance on top of 72.5¢ or 76¢?

No. That is both methods on one car. If you want the real bills, switch the analysis to actual expenses — you cannot stack them on the rate.

Where do stacked write-offs go on Schedule C?

Mileage (and usually parking/tolls) near Line 9. Loan interest typically Line 16. Vehicle tax typically Line 23. Phone and supplies on their own expense lines. Health insurance and retirement on Schedule 1. Confirm the current car-expense map.

Is my cell phone deductible if I already take mileage?

The business percentage can be. It is not a car cost and it is not inside the rate. Personal use is still personal.

Does the July 1, 2026 rate change affect these extras?

Only the mile math. 72.5¢ through June 30, 76¢ from July 1. Receipts stay receipts.

Related reading: parking and tolls with standard mileage, standard mileage vs. actual expenses, Schedule C car expenses, self-employed tax deductions, and TaxMiles on the web.

This article is general tax education for U.S. federal Schedule C filers, not legal, tax, or accounting advice and not a guarantee of any deduction. Publication 463, Schedule C instructions, Schedule 1 instructions, and IRS mileage rates can change; read the current IRS forms (Publication 463, Publication 535, Schedule C instructions, Notice 2026-10, and Announcement 2026-11) or work with a licensed professional. TaxMiles: Mileage Tracker (App Store id 6758579463) is not affiliated with the IRS, and is not MileIQ, Everlance, or Mileage Tracker for Taxes (id 6758426140).