Standard Mileage Rate or Actual Expenses – 7 Tax Tips for Sole Proprietors Using Schedule C

Are you a sole proprietor who uses a personal car for business activities? You may be wondering which is a better deduction at tax time: the standard mileage rate, or actual expenses. I am a big fan of the standard mileage rate. Here’s why.

Tip 1 – It is Easier: To figure the standard mileage rate deduction, you just need to know the number of business miles driven during the tax year. To figure the deduction for actual expenses, you really need to know the total of those expenses, then somehow determine the business portion of them. Usually, this is done by determining a ratio between the number of personal miles vs. the number of business miles. So… So in order to acurately determine the expense, you really need to know the business miles anyway. Why go through the extra step of keeping track of actual auto expenses if you do not have to?

Tip 2 – It is More Flexible: As a general rule, it’s usually better to take the standard mileage rate the first year you put a car or truck into service, rather than actual expenses. There is more. This allows you some flexibility in subsequent years, because you can select which to take after that – actual expenses OR standard mileage rate.

Sometimes it might be better to take a section 179 deduction on the vehicle the first year it’s placed in service. And so… So far so good. When this is done, the taxpayer has made the election to take actual expenses that year. This is an important election that must be actually considered carefully! Taking a section 179 deduction sometimes allows for many more tax savings over a period of years. But not always. It depends on how long you own the car & use it for business.

Tip 3 – It is More Flexible, Again! The reverse isn’t true. If you take actual expenses the first year you put a car or truck into service, you must continue to use actual expenses thereafter. Again, remember this when taking a hefty Section 179 deduction the first your vehicle is placed in service. Make sure it will be worth it in the long run.

In order to determine this, you’ll need to estimate how long you plan to use this specific car for business, & how many miles for all those years you’ll drive it for business. Right. With this information, you can estimate the mileage deduction over a period of future years. There is more. Then you can see if taking the section 179 is worth it or not.

Tip 4 – You Can Write Off More: Taking the standard mileage rate may allow you to write off more than the value of your vehicle over a period of years. There is more. This is true for people who drive many business miles each year, & who keep the same car for a number of years.

It works like this because depreciation is built into the mileage rate. And so… So if you use the same car year after year, driving many business miles each year, eventually you’ll write off more than the value of the vehicle. And you definitely take more depreciation than you would have using actual expenses. Right. When using actual expenses, once the depreciation deduction is gone, it is gone.

Tip 5 – Keep Good Records: Keep a log book in your car & record the following information each time you drive the car for business reasons:

  • Date
  • Business Reason/Place Visited
  • Beginning Odometer Reading
  • Ending Odometer Reading

Tip 6 – It is Easily Defended: If you get audited & you have kept a good log book, I can almost guarantee that your mileage deduction will remain intact. IRS auditors view mileage deductions quite seriously, & will carefully scrutinize this deduction if you return is selected for an audit. Make sure you can substantiate this important deduction with a well-maintained mileage log.

Tip 7 – Less Paperwork: When using actual expenses instead of the standard mileage rate, a certain form is needed, called a 4562. This form is needed in order to compute the depreciation on the vehicle. If you use the standard mileage rate, & do not need to depreciate any other property, the mileage deduction will be shown on page 2 of your Schedule C.

Final Thoughts

Auto expenses represent an important deduction for most sole proprietors. Make sure you select the method that allows for the most tax savings over a period of years, & that you can support your deduction with adaquate records.

About the Author: Jennifer A. Thieme is a Registered Tax Preparer & a Certified QuickBooks ProAdvisor who loves to help people with taxation & QuickBooks issues. So… She brings completely unique insight, clear instructions, & over ten years of experience to all of her business articles. Owner of Solid Rock Accounting Services, Jennifer’s clients enjoy these same benefits on a personal & regular basis. You can too – visit http://www.jenniferthieme.com & contact Jennifer today.


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