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How?
Use the worksheet alongside the original records; use an official form where required.
Fill in
By making a receipt you agree to the Terms and Privacy Policy. The Bitcoin record is permanent.
mileage log for taxes
Keep the trip record before you need to explain it.
Mileage log for taxes — Keep the trip record before you need to explain it. Use the free worksheet as you record trips. Keep receipts, export regularly, and date each export.
Your photos and files stay on your device, so keep them.
Your free mileage log for taxes.
Keep the original source records alongside this supplementary worksheet.
- Date
- Business miles
- Place / destination
- Business purpose
Check your regulator's own form. The printable version lists the source behind every field. CSV versions have an instruction row above the headings.
Then date your filled-in copy.
Keep the completed copy and its source records. A time receipt dates those exact bytes; it does not establish that an entry is true or accepted. Save a new copy weekly.
Your record, one step at a time.
Your photos and files stay on your device, so keep them.
Local preview: files are fingerprinted here. Notes and progress stay in this browser. Keep downloaded copies; browser storage is not a backup.
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How?
Add the exact original files for this part of the record. Keep them unchanged; a different export or edit has a different fingerprint.
Add link and screenshots
The link is recorded, not fetched or verified.
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How?
Add the exact original files for this part of the record. Keep them unchanged; a different export or edit has a different fingerprint.
Add link and screenshots
The link is recorded, not fetched or verified.
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How?
Record the date, time, place and who you spoke to. New notes are saved separately rather than editing an old note.
How to keep notes that hold upWrite it down
By making a receipt you agree to the Terms and Privacy Policy. The Bitcoin record is permanent.
By making a receipt you agree to the Terms and Privacy Policy. The Bitcoin record is permanent.
How to keep notes that hold up
Write notes as soon as you can. Keep the original account rather than replacing it later; the venue decides what weight it gets.
- Write it down straight away, on paper or in the box on a step.
- Put the date, time and place at the top, and who you spoke to.
- Use their words where you can; separate what you saw from what you were told.
- Sign or initial a paper note, photograph it and add the photo.
- Never edit an old note. Add a new dated entry when something changes. A device save time is not independent time evidence or proof of event order.
Mileage log for tax
Mileage log for tax
01 · Keep the exact files
Export entries with the date, miles, place and business purpose. Keep odometer photos and supporting receipts separately.
Records to keep: Log export · Receipts
Mileage log for tax
02 · Date the file’s code
Your device fingerprints the selected file or manifest. Dated follows an independent timestamp; Permanent follows Bitcoin anchoring.
An independent time, tied to the exact bytes.
Mileage log for tax
03 · Keep the evidence
Repeat as you keep the log, for example weekly. A late receipt on a reconstructed log cannot make the entries contemporaneous.
Keep the originals too. A changed or compressed copy has a different fingerprint.
Try a file. It stays here.
Make a test receipt on this device.
By making a receipt you agree to the Terms and Privacy Policy. The Bitcoin record is permanent.
or drop a file here
Real cases: why records made at the time matter.
Real cases where dated records mattered. We don’t claim a time receipt would have changed the result.
US federal · 2016
Log work trips while they are fresh
An accountant used a calendar and map printouts made about two years after work trips. They lacked places and work purposes. The court allowed no more car-cost relief than the tax office had already allowed.
Based on a trade publication’s summary of the tax decision.
Summarized on Oct 29, 2026
Read the case summary ›US federal · 2018
Rebuilt mileage logs still need their source records
A taxpayer rebuilt trip logs years later, just before trial. The source records were not shown in court, so the tax court rejected the logs as proof of car costs.
The original source was inaccessible; the supplied verification relied on search results for the core holding.
Summarized on Oct 29, 2026
Read the case summary ›US federal · 2025
Record business trips while details are fresh
A business owner sought tax breaks for car use and travel but had no trip log or linked receipts. The tax court rejected the rebuilt records and would not guess the costs.
This is a secondary account of a small tax case whose decision cannot serve as precedent.
Summarized on Oct 29, 2026
Read the case summary ›What courts, schemes and regulators say.
Positions below refer to the cited rule or record type, not endorsement of Timevolt. This service is not represented as an eIDAS qualified timestamp provider. A non-qualified timestamp does not receive the qualified timestamp presumption.
IRS Publication 463 (Travel, Gift, and Car Expenses), Chapter 5 Recordkeeping
Records should be made 'at or near the time' of the use; a weekly log counts as timely; written records, including those kept on a computer, are adequate. Section 274(d) requires amount, time, place and business purpose.
Pub 463 sets a timing rule, so proof of when a log existed is relevant. It does not mention hash or blockchain timestamps. Pub 463 text was read through a summary tool, not verbatim.
Source summary as of 2026-10-28. Check the current source and applicable local rules.
Read the sourceUS Tax Court
Courts apply IRC 274(d) strictly. Logs reconstructed years later and not corroborated by source records have repeatedly been rejected, and the Cohan estimation rule does not apply to vehicle expenses.
The cases turn on when the log was made. None found addresses cryptographic timestamps. A time receipt would support timing but not accuracy.
Source summary as of 2026-10-28. Check the current source and applicable local rules.
Read the sourceHMRC simplified expenses (vehicles) guidance
Overview page says to 'Keep records' of business miles when using flat rates. Details sit on a separate self-employed records page.
No specific stance on digital or timestamped evidence. Forum commenters disagree over whether a log is statutory.
Source summary as of 2026-10-28. Check the current source and applicable local rules.
Read the sourceOther ways to do this
Prices change. Check each provider’s site for current prices and service details.
Related workflows.
Proves / Doesn’t prove
Proves
A completed time receipt shows that the exact selected file existed by the independently witnessed time. You can check whether a later copy has the same bytes. It does not establish creation time, authorship, identity, event order, location or the truth of the contents.
Doesn’t prove
It does not prove the trips happened, that the miles or business purpose are accurate, who wrote the log, or that the IRS, HMRC or a court will accept it.
The receipt does not verify mileage, business purpose or eligibility for a deduction. Follow the relevant tax authority’s record rules.
These are the bounds of a completed proof. The local tester does not establish any time. The chosen court, scheme or regulator decides what to accept.
Questions, answered plainly.
Your file stays on your device. During normal receipt creation, your device sends a randomized code made from its fingerprint, plus encrypted recovery data. It doesn't send the plain fingerprint or the random value that opens the code. Keep the original file and the complete receipt for checking. Privacy Policy.
Does the IRS require a mileage log?
If you deduct vehicle costs, you must be able to show the date, miles, place and business purpose of each trip. A log kept at or near the time is the usual way to do that. The IRS does not require a specific format.
Source summary as of October 30, 2026. Check the current source and its scope.
Context for this answerWill a time receipt make my mileage log IRS-proof?
No. It shows these exact files existed by the receipt date, which shows that this exported log existed by the receipt date; it does not verify when each entry was written. It cannot show the trips were real or the entries correct, and the IRS decides what it accepts.
Source summary as of October 30, 2026. Check the current source and its scope.
Context for this answerCan I rebuild a log from my calendar if I lost it?
You can try, but Tax Court has rejected logs rebuilt years later, even when detailed. A time receipt cannot make an old rebuild count as current. It only helps from the day you use it.
Source summary as of October 30, 2026. Check the current source and its scope.
Context for this answerDo you see my mileage log?
Your file stays on your device. During normal receipt creation, your device sends a randomized code made from its fingerprint, plus encrypted recovery data. It doesn't send the plain fingerprint or the random value that opens the code. Keep the original file and the complete receipt for checking.
How often should I get a receipt?
The IRS says a weekly log counts as timely. A receipt each week or month after you update the log gives a clear dated trail. Free receipts cover one-offs, and the Pass is $4.99/mo for regular use.
Source summary as of October 30, 2026. Check the current source and its scope.
Context for this answerI use a mileage app. Do I still need this?
Apps record trips, and you can export the report and get a time receipt for the export. That gives you a dated copy that is independent of the app company.
What do 'Dated' and 'Permanent' mean?
Dated requires independently validated timestamp evidence. Permanent requires verified Bitcoin anchoring evidence with the required confirmations. The local tester issues neither status.
Does this work for UK or other countries' mileage claims?
The receipt works anywhere, since it only proves when a file existed. HMRC tells self-employed people to keep mileage records, but we found nothing on whether it accepts timestamps.
Source summary as of October 30, 2026. Check the current source and its scope.
Context for this answerThe file tester runs on your device. It does not issue a timestamp or take a payment.
Keep the records you already have.
Keep your original files and any existing official records while the receipt service is being prepared.