Tax document checklist — Keep your filed copy beside the filing acknowledgment. Use the free tax document checklist to keep the return, confirmation and supporting records together.
Your photos and files stay on your device, so keep them.
Use your state's / regulator's official form; this is a worksheet. No tax advice. Keep what your tax authority requires; this does not calculate a retention period.
Check your regulator's own form. The printable version lists the source behind every field. CSV versions have an instruction row above the headings.
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 when the record set changes.
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.
Use your state's / regulator's official form; this is a worksheet. No tax advice. Keep what your tax authority requires; this does not calculate a retention period.
By making a receipt you agree to the Terms and Privacy Policy. The Bitcoin record is permanent.
Add the exact original files for this part of the record. Keep them unchanged; a different export or edit has a different fingerprint.
The link is recorded, not fetched or verified.
Add the exact original files for this part of the record. Keep them unchanged; a different export or edit has a different fingerprint.
The link is recorded, not fetched or verified.
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 upBy 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.
Write notes as soon as you can. Keep the original account rather than replacing it later; the venue decides what weight it gets.
Use the free tax document checklist to keep the return, confirmation and supporting records together.
Records to keep: Return · Confirmation
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.
Keep what your tax authority requires. Retain the official mailing or electronic-filing acknowledgment separately from the file date.
Keep the originals too. A changed or compressed copy has a different fingerprint.
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
26 CFR 301.7502-1 gives specific treatment to registered mail and USPS-postmarked certified-mail sender receipts. A Certificate of Mailing is a different service and should not be treated as equivalent. Keep the applicable original postal evidence.
As of October 30, 2026.
Read the primary sourceReal cases where dated records mattered. We don’t claim a time receipt would have changed the result.
A taxpayer said a refund claim was mailed on time, but the tax office had no record of it. The appeal court kept the case closed because timely mailing was not proved. It stressed keeping proof while the filing clock runs.
Summarized on Oct 29, 2026
Read the decision ›A taxpayer disputed whether a refund request reached the tax office on time. Proof of receipt was strong enough to keep the timing issue open. The appeal court set aside part of the earlier ruling without choosing a final winner.
Procedural appeal; this decision did not finally award the refund.
Summarized on Oct 29, 2026
Read the decision ›A taxpayer said a return was mailed on time, but the tax office denied receiving it. The court allowed witness accounts and a sworn statement as mailing proof. It kept the ruling that the claim was timely.
Summarized on Oct 29, 2026
Read the decision ›A prisoner said a tax court request was mailed months before the one the court received. The court found no earlier letters in its records. The appeal court kept the case closed for late filing.
Summarized on Oct 29, 2026
Read the decision ›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.
26 U.S.C. 7502: timely mailing treated as timely filing; USPS postmark, registered mail record, designated private delivery service; certified mail and electronic filing per regulation
The statute names postmark, registered or certified mail and designated delivery services as the proof of timely mailing. A file time receipt is not on that list and is not evidence of mailing.
Source summary as of 2026-10-28. Check the current source and applicable local rules.
Read the source26 CFR 301.7502-1: only direct proof of delivery, registered or certified mail proof, or designated PDS use gives prima facie delivery; e-filed documents are filed on the date of the authorized transmitter's electronic postmark
The regulation says no other evidence of a postmark or of mailing is prima facie evidence of delivery, and treats the electronic postmark from an authorized transmitter as the e-file date. A time receipt is not that, though courts have looked at other evidence of mailing in some cases.
Source summary as of 2026-10-28. Check the current source and applicable local rules.
Read the sourceKeep records supporting a return until the period of limitations runs out (generally 3 years, longer in some cases); keep copies of filed returns
IRS guidance sets how long to keep records and recommends keeping filed returns, but says nothing about independent timestamps or hashes of those copies.
Source summary as of 2026-10-28. Check the current source and applicable local rules.
Read the sourcePrices change. Check each provider’s site for current prices and service details.
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.
It does not prove you mailed or e-filed anything, that the IRS received it, who prepared it, or that the figures are right; under the IRS rules proof of mailing still needs a USPS postmark, registered or certified mail record, designated private delivery service, or an authorized e-file transmitter postmark.
No tax advice. A timestamp does not establish filing, receipt by an authority, correct figures or a retention period.
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.
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.
No. Under the IRS rules timely filing is proved by a USPS postmark, a registered or certified mail record, a designated private delivery service, or the electronic postmark from an authorized e-file transmitter. A time receipt shows your files existed unchanged by a date, which supports your own copies.
Source summary as of October 30, 2026. Check the current source and its scope.
Context for this answerA legible USPS postmark, the date on a registered mail record, the USPS-postmarked sender receipt for certified mail, or proof you used a designated private delivery service. For documents, the registered or certified record is prima facie evidence of delivery.
Source summary as of October 30, 2026. Check the current source and its scope.
Context for this answerThe burden is usually on you to show you filed. Courts have turned on whether the taxpayer had a postmark, certified receipt, or other independent evidence of mailing; in one appeals case the claim failed because no receipt could be found.
Source summary as of October 30, 2026. Check the current source and its scope.
Context for this answerAn e-filed document is treated as filed on the date of the electronic postmark, which is the record of when an authorized transmitter received it. Keep your software's acceptance confirmation.
Source summary as of October 30, 2026. Check the current source and its scope.
Context for this answerGenerally until the period of limitations for that return runs out, usually 3 years, 6 years if you left out more than 25 percent of gross income, 7 years for worthless securities or bad debt losses, and indefinitely if no return was filed. Keep copies of filed returns.
Source summary as of October 30, 2026. Check the current source and its scope.
Context for this answerYour 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.
Source summary as of October 30, 2026. Check the current source and its scope.
Context for this answerNot reliably. One appeals court accepted testimony and an affidavit as other evidence of the postmark date, but the regulation lists only specific kinds of proof, and another appeals court ruled against a taxpayer who had no receipt.
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 your original files and any existing official records while the receipt service is being prepared.