Few professions rack up business miles quite like real estate. Between property showings, client meetings, open houses, trips to the title office, and endless runs to check on listings, an agent's car doubles as a mobile office. Yet many agents leave thousands of dollars on the table every tax season simply because they can't prove how far they drove. One review of agent mileage logs found drivers who covered 22,000 business miles in a year but could only document 6,000 of them — a gap that translated into roughly $11,200 in lost deductions.

If you drive for your real estate business, your vehicle is one of your largest deductible expenses. Here's how the deduction works, how to choose the right method, and how to keep records that hold up if the IRS ever asks questions.

Why Mileage Matters So Much for Agents

Real estate is inherently a driving business. Unlike a salaried employee commuting to a single office, agents move constantly throughout the day, and almost all of that movement qualifies as a business expense. The catch is that the IRS treats a vehicle deduction as one of the more scrutinized write-offs precisely because it's so easy to inflate. Estimates and round numbers won't survive an audit; contemporaneous records will.

Understanding the distinction between deductible and non-deductible driving is the foundation. Get that right, and everything else is just tracking.

What Counts as Business Mileage

  • Driving to show properties to clients
  • Traveling between listings or to open houses
  • Trips to meet clients, lenders, inspectors, or attorneys
  • Runs to the office, title company, or courthouse for business errands
  • Driving to pick up marketing materials, signage, or supplies
  • Attending continuing education classes or industry events

What Doesn't Count

Your regular commute from home to a fixed office is considered personal, not business. So is any purely personal errand you tack onto a business trip. The good news for many agents: if your home is your principal place of business, trips from your home office to showings and meetings can often qualify as business miles rather than commuting — a meaningful difference over the course of a year.

The Two Methods: Standard Mileage vs. Actual Expenses

The IRS lets you deduct vehicle costs one of two ways. You can't use both for the same vehicle in the same year, and the choice can significantly change your final deduction.

Standard Mileage Rate

With this method, you simply multiply your business miles by the IRS rate. For 2025, the standard mileage rate rose to 70 cents per mile. That single figure is meant to cover gas, maintenance, insurance, depreciation, and wear and tear, so you don't need to itemize individual costs — you just need an accurate mile count.

The math is straightforward: an agent who drives 15,000 business miles at 70 cents would deduct $10,500. The appeal is simplicity, and it often works best for agents who drive a lot in a relatively fuel-efficient, inexpensive-to-maintain vehicle.

Actual Expenses

The actual expense method has you total every real cost of operating your vehicle for business, then deduct the business-use percentage of that total. Deductible costs include:

  • Gas and oil
  • Repairs and maintenance
  • Insurance
  • Registration and license fees
  • Lease payments or depreciation
  • Tires and other consumables

If 70% of your driving is for business, you deduct 70% of these combined costs. This method can often yield a larger deduction than the standard rate — especially if you drive an expensive vehicle, one with poor gas mileage, or one with high repair and insurance costs. The trade-off is far more paperwork: you need receipts for everything, plus the mileage records to establish your business-use percentage.

How to Choose

A practical approach is to estimate your deduction under both methods for the first year you use a vehicle. There's an important rule to know: if you want the flexibility to switch between methods in later years, you generally must choose the standard mileage rate in the first year the car is used for business. Start with actual expenses, and you may be locked into it for that vehicle. Because the rules around depreciation and switching can get complicated, it's worth confirming your specific situation with a tax professional.

Regardless of which method you pick, one thing stays constant: you need a reliable mileage log. The standard method obviously depends on your mile count, but actual expenses do too — that's how you prove your business-use percentage.

Building a Mileage Log That Survives an Audit

The reason so many agents lose deductions isn't that they didn't drive — it's that they can't substantiate what they drove. The IRS expects records that are contemporaneous, meaning kept at or near the time of the trip, not reconstructed from memory in April.

A defensible log captures four things for each business trip:

  1. The date of the trip
  2. The destination or purpose (e.g., "showing at 412 Oak St." or "closing at title office")
  3. The starting and ending odometer readings or total miles driven
  4. The business reason for the trip

You'll also want your total annual mileage so you can calculate the business-use percentage — the IRS wants to see business miles as a fraction of all miles driven. Recording your odometer reading on January 1 and December 31 each year makes this simple.

Why Automation Beats the Paper Notebook

Manual logs fail for a predictable reason: they rely on you remembering to write things down in the middle of a busy day of showings. Miss a few trips a week and the gaps add up to thousands of undocumented miles by year's end. This is why more agents rely on apps that record trips automatically using GPS, then let you swipe or tag each drive as business or personal. Tools like Rienly can track your mileage in the background and keep tabs on your vehicle's maintenance schedule, so the record is building itself while you focus on clients. Automating the capture is the single most effective way to close the documentation gap that costs agents so much.

Common Mistakes That Cost Agents Money

Even diligent agents trip over the same handful of errors. Avoiding them protects both your deduction and your peace of mind in an audit.

  • Estimating instead of tracking. Round numbers like "about 20,000 miles" are a red flag and won't hold up without supporting detail.
  • Mixing business and personal driving without separating them. Only the business portion is deductible, and you must be able to draw the line.
  • Claiming the commute. Understand whether your home qualifies as your principal place of business before treating home-to-showing trips as deductible.
  • Losing receipts under the actual expense method. Without documentation for gas, repairs, and insurance, those costs disappear.
  • Switching methods incorrectly. Remember the first-year rule for the standard mileage rate.
  • Waiting until tax time to reconstruct the year. A log built from memory is both inaccurate and legally weak.

Don't Overlook Your Other Vehicle Deductions

Even when you use the standard mileage rate, a few vehicle-related costs remain separately deductible because the rate doesn't cover them. These typically include:

  • Parking fees incurred for business (not including parking at your regular workplace)
  • Tolls paid during business trips
  • The business-use portion of car loan interest, if you're self-employed

Keep records of these alongside your mileage log — they're easy to forget and add up over a busy year of driving between properties.

Putting It All Together

For a real estate agent, mileage isn't a minor line item — it's often one of the biggest deductions available, and it's entirely within your control to maximize. The formula is simple in principle:

  1. Track every business mile as it happens, with date, destination, purpose, and distance.
  2. Record your total annual mileage so you can calculate business use.
  3. Run the numbers both ways — standard rate versus actual expenses — at least in your first year with a vehicle.
  4. Keep receipts for tolls, parking, and, if you use actual expenses, every operating cost.
  5. Use automation so the record builds itself and the gaps never open up.

The agents who lose money on mileage aren't driving less than everyone else — they simply can't prove the miles they drove. Build the habit of documenting every trip, choose the method that fits your vehicle and driving patterns, and you'll turn one of the most audited deductions into one of the most reliable savings on your return. When in doubt about the finer points, a quick conversation with a tax professional will help you keep every mile you've legitimately earned.