Mileage records are easier to review when every trip has a clear business purpose, consistent details, and supporting documents stored together. This guide sets up a paper, spreadsheet, or app-based system for a small business in British Columbia, while distinguishing mileage records from sales-tax records.
Decide what the record needs to show
Start by identifying who will review the records and what question they need to answer. A bookkeeper may need enough information to categorize vehicle costs; a tax preparer may need to understand which travel was business-related; a manager may be checking whether a trip matched an appointment or delivery. Requirements vary with the purpose, business structure, and tax treatment, so treat this workflow as an organizational method rather than a statement of every legal record-keeping rule.
For each business trip, record the information that makes it understandable later:
- Date: Use the date the travel occurred.
- Starting point and destination: Include a client, supplier, job site, or other useful location description. Avoid storing unnecessary sensitive personal details.
- Distance: Record the trip distance in a consistent unit, such as kilometres. Note whether it is a one-way distance or a round trip.
- Business purpose: Describe the work activity, such as “deliver order to client” or “inspect project site.” A vague entry such as “business” is hard to assess.
- Vehicle identification: If more than one vehicle is used, identify which one made the trip.
- Supporting reference: Where relevant, add an invoice, calendar entry, work order, delivery record, or receipt reference.
A trip record should be understandable without relying on your memory months later. Use neutral, specific descriptions. For a trip combining business and personal errands, record the business portion separately and explain the route or distance method used. Do not label an entire journey business travel if only one leg or stop related to work.
Choose a system you will maintain
The best format is the one you can update promptly and retrieve reliably. You can use a bound notebook, a spreadsheet, or a mileage app. Each has trade-offs, and none automatically makes an incomplete record useful.
| System | Useful when | Main limitation |
|---|---|---|
| Paper log | You prefer a simple record that travels in the vehicle | Entries can be lost, hard to search, or difficult to back up |
| Spreadsheet | You want sortable rows and control over categories | It depends on consistent entry and careful version management |
| Mileage app | You make frequent trips and want location or distance capture | Settings, phone access, battery, privacy, and exports need attention |
For a paper log, reserve one page or section for each month or vehicle. Number pages or use a dated notebook, and transfer a backup copy periodically. Keep a pen with the log, but avoid leaving documents with personal or client information visible in the vehicle.
For a spreadsheet, use one trip per row, fixed column headings, and a single date format. Keep the original entries intact; correct mistakes with a note or a dated revision instead of silently replacing a figure after review has begun. Save a working copy in a secure location and a separate backup. If multiple people enter trips, assign responsibility for updates and use a shared file with version history where practical.
For an app, check how it records routes, whether it permits manual corrections, how it exports data, and where data is stored. Automatic trip detection can be convenient, but it may classify personal travel incorrectly or miss a journey. Review suggested trips and export records in a readable format you can retain independently of the app. Follow the app maker’s instructions for setup and data export; features differ by product and device.
Set up the log before the next trip
Create your columns or choose your app fields before you need them. A spreadsheet might use: date, vehicle, start, destination, purpose, distance, distance unit, business or personal classification, supporting reference, and review note. Add a separate field for corrections so that an adjustment does not erase the original context.
Decide how you will measure distance and apply the same approach throughout the period. A vehicle odometer is a practical source for many trips: note the starting and ending readings when useful, or record the trip distance if that is your established method. A mapping estimate can help reconstruct a route, but note that it is an estimate and keep the method consistent. Do not combine odometer readings, map estimates, and app estimates without marking which source produced each figure.
If you use a vehicle for both personal and business travel, keep a clear way to distinguish the two. Some systems record every trip; others record business trips and separately track information needed to reconcile overall vehicle use. The appropriate method can depend on the tax question and applicable rules. Ask a qualified tax professional which records are needed for your circumstances rather than assuming that one format suits every claim.
At the beginning of your chosen reporting period, record the vehicle details and the odometer reading if it is relevant to your method. Record a later reading at a consistent interval, such as at a period end, and retain the date and source. These readings can help explain how trip distances relate to the vehicle’s total use, but they do not replace trip purpose and destination details.
Record trips close to when they happen
Make the entry at the end of each trip or as soon as you reasonably can. A short, timely note is more reliable than rebuilding a month from memory. If you cannot write while travelling, use a safe reminder method, such as a calendar task or a voice note made when parked, then complete the log promptly.
Use the same naming conventions every time. For example, use a consistent client or project label and avoid switching among a person’s name, company name, and shorthand unless the relationship is clear. If a trip has multiple business stops, list each destination or keep a route note that explains the sequence and total distance. If you return by a different route, record the actual distance or explain the estimate.
A practical entry might look like this:
2026-11-05 | Vehicle A | Shop to Cedar Street job site and return | Inspect installation | 18 km round trip, odometer | Work order 241
This example is only a format illustration. Adapt the fields to your work and record the unit explicitly. If your system stores start and end readings rather than a single distance, make that clear in the column labels.
Keep business and personal travel descriptions factual. If you stop for a personal errand during a work journey, separate the relevant legs where possible and note the basis for the business distance. Avoid rounding distances inconsistently or changing categories merely to make totals appear cleaner.
Match mileage to expenses and sales-tax records
A mileage log explains travel; it does not by itself establish every vehicle expense or sales-tax amount. Store supporting items in a separate but linked folder or accounting system. Depending on the transaction and your circumstances, useful documents may include fuel, repairs, parking, toll, lease, insurance, or other vehicle-related records, as well as invoices and payment evidence. The records needed and the way expenses are treated can vary.
Use a simple reference convention so a reviewer can move from a trip to related evidence. For example, label an expense receipt with the date and vehicle, then add a receipt or transaction number to the log or bookkeeping entry. If a fuel receipt covers general vehicle use rather than one particular trip, do not imply that it proves the trip’s purpose. It supports an expense record, while the trip log supports the travel details.
For sales-tax bookkeeping, retain the source documents that show the transaction and the tax information relevant to your accounting. A mileage log is not a substitute for a supplier invoice or receipt, and a receipt does not establish that a journey was for business. Keep these records connected through consistent dates, vendor names, transaction references, and vehicle labels.
When planning a purchase, consider the record-keeping implications before choosing a vehicle, tracking app, or bookkeeping workflow. Ask whether the records can be exported, whether more than one driver can use the system, how long data remains available, and whether the expense documents will be easy to match. For vehicle purchases or complex tax questions, confirm the applicable treatment with a qualified professional before relying on a spreadsheet formula or an online calculator.
Review the records on a regular schedule
A brief monthly review can catch gaps while details are still available. Compare the log with your calendar, appointment records, delivery notes, work orders, and available odometer readings. Look for missing dates, duplicate trips, unclear purposes, implausible distances, and entries without a vehicle identifier.
Use this review sequence:
- Check completeness: Scan for blank dates, destinations, purposes, or distance units.
- Check consistency: Confirm that the same unit, naming style, and trip classification are used throughout.
- Check supporting references: Make sure referenced work orders, invoices, or receipts can be found.
- Check totals: Sum distances by vehicle and period using the same categories. Keep the underlying trip entries available; a total alone is not enough to explain how it was calculated.
- Flag questions: Mark an uncertain entry for follow-up instead of guessing or quietly deleting it.
A reviewer should be able to trace a total back to its individual trips and see how corrections were made. Keep a short note when you change an entry, including the reason, date of correction, and source used. If you have already shared a copy for review, issue a clearly dated revised version and state what changed.
Fix common gaps without inventing details
If you discover a missing entry, reconstruct it from contemporaneous evidence such as a calendar appointment, work order, delivery record, or map route. Identify it as a reconstructed entry, record the date you added it, and state the source. Do not present a later estimate as though it were an original contemporaneous reading.
If the destination is known but the distance is uncertain, use a reproducible method and identify it as an estimate. Preserve any available route or odometer evidence. If you cannot establish a reasonable basis for a figure, leave it flagged and ask your bookkeeper or tax preparer how to handle it.
If an app missed trips, review its settings and permissions according to the maker’s guidance, then compare the app data with another reliable record. Avoid assuming that GPS capture is complete: phones may be off, location access may be restricted, or a trip may be misclassified. If the spreadsheet contains conflicting versions, retain the original file and make a dated corrected copy so the change history is clear.
If a personal trip was accidentally marked as business, correct the classification and retain a note explaining the correction. If a trip served mixed purposes, break it into legs or document a reasonable allocation method. The right treatment can depend on current rules and the facts; record the facts clearly and seek professional advice where the classification affects a tax claim.
Prepare a review package
Before sending records to a bookkeeper, manager, or tax preparer, organize a package that is easy to navigate.
A sensible folder structure is Year / Vehicle / Mileage, with separate folders for expense documents and a short index that explains the files.
Use descriptive filenames such as 2026-11-mileage-vehicle-A.xlsx and avoid putting unnecessary personal information in filenames.
Include the period covered, vehicle identifiers, the log, supporting references, and a brief note about the distance method, units, and any reconstructed or estimated entries. If the reviewer needs vehicle expense documents, provide the related records in an organized folder and explain how the references match. Share only the information needed for the review, using a secure method appropriate to the sensitivity of the documents.
Keep an unchanged copy of what you submitted and note when and to whom it was sent. Retention periods and required records depend on the applicable tax rules and circumstances, so confirm how long to keep the underlying documents with a qualified tax professional or the relevant official guidance. Do not discard source records simply because a summary spreadsheet has been prepared.