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Business and Money · Calculator · Free

The deduction most owners under-claim Mileage Deduction Calculator

Estimate a mileage deduction for the entered period and an illustrative tax effect. A deduction is not a dollar-for-dollar refund.

Runs in your browser. Nothing to install. Save the result or embed it on your site.

Illustration for the Mileage Deduction Calculator: a calculator mark on a business and money background in The LeadFlow Pro colours.
Working toolUse it before you book anything.

Your numbers

IRS business rate: 76¢ for July through December 2026; 72.5¢ for January through June 2026; 70¢ for 2025. Run periods separately and combine the deductions. Confirm the rate for your trip dates at irs.gov/tax-professionals/standard-mileage-rates.

What that means

Modeled mileage deduction for entered weeks: $4,940
$4,940
Modeled mileage deduction for entered weeks
6,500 business miles
$1,482
Tax-effect scenario at entered rate
$1,482
Deduction associated with unlogged miles
miles you never logged
$445
Tax-effect scenario for those miles
$190
Per week
Logged vs forgotten
Deduction you claim$3,458
Deduction you lose$1,482

Standard mileage only, and only for business miles. Commuting does not count. Rates can change within a year. Use each trip date's rate and separately total periods; do not apply the second-half 2026 rate to a full year. Eligibility and documentation matter; confirm current IRS rules or ask your tax professional.

What this assumed

  • The editable default is 76 cents for July through December 2026. Use 72.5 cents for January through June 2026 and 70 cents for 2025; total each period separately and verify the IRS table.
  • The standard mileage method and the actual expense method are different elections. This models the standard rate only.

Runs in your browser. Your entries are never uploaded, never saved on our servers, and never put in a shareable link.

Not tax advice

Tax rules change and vary by state, county and situation. This tool does not know your filing status, deductions or local rates. Confirm anything you plan to file with a tax professional or the current official guidance.

Official source: IRS

You ran this on October 5, 2026. Rates and rules change, so check the date before you rely on a saved copy.

What this tool actually does for you

Who it is for

Trades, sales, delivery, real estate, anybody living in a truck.

The problem it points at

You remember the big trips and forget the fifteen supply runs. Those runs are usually the bigger number.

What you walk away with

A yearly figure that makes logging miles feel worth the trouble.

How to use it

Takes about two minutes. Be honest with the numbers, the tool is not going to tell anybody.

  1. Enter your weekly business miles. Include supply runs, bank trips and job hopping.
  2. Set the current IRS standard mileage rate.
  3. See the deduction and what it saves in tax.
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