How Should a Small Business Track Mileage?

Keep enough information to reconstruct a trip

Record the date, origin, destination, business purpose, distance and unit. Add vehicle information, starting and ending odometer readings, and a customer or project reference where needed. Identify the client, meeting, delivery or other business activity. A calendar or invoice can support the business purpose, but it needs to connect to trip-by-trip distances and cannot replace a complete log.

For customer privacy, record and share only what is necessary. A full address need not appear on every document sent outside the business.

• Trip date and vehicle
• Origin and destination
• Business purpose or project
• Business distance and unit

Commuting, reimbursement and tax deductions are separate questions

First define the log's purpose: employer reimbursement, client billing, internal costs or a particular tax calculation. Qualifying for one purpose does not establish eligibility for another.

Commuting from home to a regular workplace is not automatically the same as visiting a client site. Traveling during working hours or carrying a computer does not make the whole journey business mileage.

Reimbursement depends on employer policy or the client agreement. Tax deductibility depends on applicable local rules and individual circumstances. A U.S. business using the IRS standard mileage method should confirm the rate, eligibility and conditions for the relevant year and period. A published tax rate is not automatically the rate an employer or client agreed to reimburse. Don't copy figures from an old article.

Know the rate before calculating the amount

Log distance as a fact about the actual journey, and retain the rate from applicable rules or the agreement. Keep them separate so adjusting the rate for the relevant period does not overwrite the original trip. Confirm whether the unit is kilometers or miles, and don't mix them.

Suppose the agreed rate is CNY 0.80 per kilometer. For 32 kilometers, the amount is CNY 25.60. This is an example, not an official tax rate or market recommendation. Confirm in advance whether parking and tolls are separate and which vehicle costs the rate already covers. Don't claim fuel or other costs separately if they are already included in the mileage rate.

Log trips daily and reconcile monthly

Add a trip after parking, or use an available recording tool. Navigation history can help recall the trip, but check the actual route and purpose. Don't treat all driving as business mileage.

At least monthly, reconcile the log with calendars, client visits, invoices and other travel records. Review by project or vehicle for duplicate trips, implausible distances, missing purposes and long gaps. Keep the original log, calculations, policies, evidence and approval records.

When reporting, follow current requirements for the relevant jurisdiction, year, period and method. Keep more than the final amount.

• Reconcile logs at least monthly
• Investigate missing purposes and distances
• Confirm the relevant year, period and method
• Keep calculations and source records

What makes a useful mileage record?

When using an odometer, keep start and end readings. For routes or automatic recording, confirm the route and add the business purpose the tool cannot know. Recording trips consistently makes them easier to explain.

For example, “September 23, studio to client B's store, site measurement, 36 kilometers round trip” explains why the trip occurred. “I drove 36 kilometers” offers little support for reimbursement or project analysis. “Client equipment inspection” is more specific than “work.”

Split out personal detours

Shopping, pick-ups and drop-offs may form part of the same journey. Distinguish business from personal travel, with a reasonable, consistent allocation basis and route explanation. Don't claim the whole journey without explaining it.

An automatic tool can record routes but may not know what each segment was for. It might miss trips too. Reviewing and classifying trips that day is easier than facing a month of unexplained routes.

• Identify ordinary commuting
• Split out personal detours
• Explain mixed-purpose trips
• Apply the relevant classification rules consistently

Keep the source of the reimbursement rate

The rate may come from employer policy, a client contract or applicable rules. Check the unit, period and vehicle costs covered, and retain the rate's source.

In another illustration, an agreed CNY 0.80 per kilometer for 125 kilometers produces CNY 100. This is an arithmetic example. Record separately reimbursable parking, tolls or other costs according to the agreement.

Here is another illustration, with the rate and amount in the same currency. It is not a suggested or official rate.

Avoid double-counting vehicle costs

Some arrangements reimburse agreed vehicle costs through a mileage rate; others use actual expenses. Whether fuel, insurance, maintenance, parking or tolls can be claimed separately depends on the agreement or applicable method. Hold the receipts required by that method and don't claim the same cost twice.

Personal and business use may need an allocation basis. Keep trips, total mileage and expense records. Fuel receipts alone aren't proof of all business use. Comparing mileage reimbursement with actual vehicle expenses can help with planning; keep that analysis separate from formal reimbursement or the tax method you are entitled to use.

Choose a system that lets you take your records with you

A manual spreadsheet may suit occasional trips. Frequent drivers may consider automatic recording, while still checking business purposes, personal journeys and omissions. Check whether you can edit purposes, associate trips with clients and export details. Consider battery use, location permissions, privacy and access.

Review route or GPS data. It must not silently override an approved record. For a team, explain why trips are recorded, who has access and how the information is handled. Capture only necessary business information rather than turning reimbursement records into all-day personal location tracking.

Keep vehicle evidence and check before submitting

Take beginning and ending odometer readings for the relevant year or business-use period if the chosen method requires them. Keep vehicle purchase, lease, maintenance, fuel, insurance, toll and parking records. Trip start/end readings and period readings serve different purposes and are not interchangeable.

• Beginning and ending period odometer readings
• Vehicle ownership or lease records
• Evidence required by the chosen method
• Reviewed route and distance evidence

Before submitting, check dates, duplicate trips, units, distance, purpose and rate. Reconcile advances and amounts already reimbursed. Link the claim to the original trips and later actual payment. Reconstruct missed entries from genuine supporting information and note the basis; don't invent a precise route from unsupported memory.