Massachusetts Mileage and Vehicle Tax Records (2026): Bonus Depreciation, Employee Expenses, TNC and AV Testing
General information, not tax or legal advice. Talk to your tax preparer or attorney about your situation.
Massachusetts doesn't allow federal bonus depreciation and limits Section 179 to the amounts before the 2025 federal law, so vehicle depreciation can differ from your federal return. Most unreimbursed employee mileage isn't deductible in recent years. Rideshare drivers need a state background check certificate, and MassDOT approves driverless testing.
Massachusetts follows parts of the federal code and decouples from others, and vehicle depreciation is one of the gaps. This guide covers what the Massachusetts Department of Revenue (DOR), the General Laws and MassDOT say as of October 16, 2026.
The federal baseline every Massachusetts driver starts from
Most vehicle deductions begin on your federal return. If you're self-employed, you can generally use the standard mileage rate or actual expenses for the business share of your car (IRS Topic 510). For 2026 the business rate is 72.5¢ per mile for January 1 to June 30 (IR-2025-128 / Notice 2026-10) and 76¢ per mile for July 1 to December 31 (IR-2026-29 / Announcement 2026-11) (IRS standard mileage rates). EVs use the same rates; see the 2026 EV mileage rate guide. Most employees can't deduct unreimbursed car expenses federally (Topic 510). IRS Publication 463 asks for each business trip's miles, date, destination and purpose, plus total miles. Commuting stays personal (commuting vs business miles).
How Massachusetts treats vehicle deductions
DOR's differences page (updated June 24, 2026) says Massachusetts generally follows the Internal Revenue Code as in effect on January 1, 2024. It doesn't allow federal Schedule A deductions; you claim only deductions on Massachusetts forms. It also doesn't allow the federal car loan interest deduction.
Depreciation
The same page says Massachusetts doesn't allow bonus depreciation under IRC Section 168(k). Section 179 is allowed without the increased limits from Public Law 119-21 (July 4, 2025), so you recalculate it, and you can claim it for Massachusetts only if you claimed it federally. Keep each vehicle's cost and placed-in-service date. See why business-use percentage matters.
Unreimbursed employee expenses
DOR's employee business expenses page says the itemized employee deductions, including work travel and vehicle operating costs, may not be taken for 2018 through 2025. The Massachusetts amount depends on what's allowed federally under current law, so ask your preparer about 2026. Some groups, such as eligible performing artists and fee-basis government officials, deduct qualifying expenses regardless. The page adds that for 2026 and later, employees can deduct reimbursed expenses under an employer arrangement only if the reimbursement is included in W-2 wages.
Rideshare (TNC) rules in Massachusetts
TNCs are regulated by the Department of Public Utilities' TNC Division under G.L. chapter 159A½, with regulations at 220 CMR 274.00 (DPU summary). Companies need an annually renewed DPU permit (section 3). You need both a DPU background check clearance certificate and a TNC driver certificate, must be at least 21, and need a vehicle registered and inspected in Massachusetts (section 4). Rides must be pre-arranged through the app, with no cruising (section 3), and you display the TNC's decals front and back (section 2). Companies keep incident reports for at least 7 years (section 8). Section 10 bars most local TNC taxes and licenses, with exceptions for Massport and some airport pick-up fees. See which rideshare miles count.
Robotaxis and autonomous vehicles in Massachusetts
MassDOT's testing guide says MassDOT is the lead agency for testing automated driving systems (SAE Levels 3 to 5) under Executive Order No. 572. An applicant submits an Application to Test, a Testing Plan and a Memorandum of Agreement. The plan lists roads offered by participating owners such as Boston, Cambridge and Worcester. Approval covers at most two years. The guide covers testing; check with MassDOT and an attorney about commercial service. See robotaxi fleet tax basics.
What to keep in your Massachusetts records
- Each business trip's date, start, destination, purpose and miles, plus total miles for the year (Pub 463); a weekly log counts as timely kept.
- Separate Business, Commute and Personal totals for Form 4562 Part V.
- Keep records until the period of limitations runs out, generally 3 years federally (IRS); ask your preparer about the state period.
- If you claimed Section 179 or bonus depreciation federally: the vehicle's cost, placed-in-service date and federal figures, so your preparer can recalculate the Massachusetts amounts.
- For rideshare: keep ride receipts, annual summaries and your certificate dates.
For the full list of log fields, see what the IRS asks you to record.
Example: 1,000 hypothetical business miles driven in September 2026 × 76¢ (IR-2026-29) = $760 at the federal standard rate. Miles driven in March 2026 would use 72.5¢ (IR-2025-128) instead, so keep each trip's date. Estimates, not tax advice.
One log for both returns
A Massachusetts return doesn't call for a second mileage log; your preparer works from the same business, commuting and personal miles. CyberDeduct builds a mileage log around IRS Pub 463 from your Tesla's own trip and odometer data (Model S, 3, X, Y and Cybertruck). You connect your Tesla account once through Tesla's standard account sign-in (OAuth); CyberDeduct never sees or stores your password. Home/work rules and route templates label most trips Business, Commute or Personal; you tap to change any label and confirm the purpose. The dashboard shows your business-use percentage and warns you on the 28th if you're under 50%. You export a PDF or CSV log plus a Form 4562 Part V worksheet for your preparer. See how the log is built or see plans.
Sources (checked October 16, 2026)
- Massachusetts DOR, Differences between MA and federal tax law for personal income
- Massachusetts DOR, Employee business expenses
- G.L. chapter 159A½
- DPU, Rideshare company laws and regulations
- MassDOT, Testing automated driving systems in Massachusetts
- IRS, Standard mileage rates; IRS Publication 463; IRS Topic 510
Frequently asked questions
Does Massachusetts allow bonus depreciation on a work vehicle?
No. DOR says Massachusetts doesn't allow the IRC Section 168(k) bonus depreciation deduction.
Does Massachusetts follow the 2025 federal Section 179 increase?
No. DOR says Section 179 is allowed without the increased thresholds from Public Law 119-21, so you recalculate it.
Can Massachusetts employees deduct unreimbursed mileage?
DOR says the itemized employee deductions may not be taken for 2018 through 2025, and the state amount follows current federal rules. Ask your preparer about 2026.
What do I need to drive rideshare in Massachusetts?
A DPU background check clearance certificate and a TNC driver certificate, age 21 or older, and a Massachusetts-registered, inspected vehicle (G.L. c. 159A½, section 4).
Are driverless cars tested in Massachusetts?
Yes, with MassDOT approval of an Application to Test, Testing Plan and Memorandum of Agreement, for up to two years.
This article is general information, not tax or legal advice. Talk to your tax preparer or attorney about your situation. State laws and bill status change; check the linked sources for the current text.
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