Scan each receipt while it is readable, verify every amount and edge, add the business purpose or other missing context, and connect the file to the matching transaction. Reconcile receipts weekly, close each month with an exception list, export common files, maintain an independent backup, and retain records for the period that applies to the underlying return item. OCR helps entry and search but does not replace the source image.
Scope: This article covers a US federal tax recordkeeping workflow, not whether an expense is deductible. State, local, contractual, industry, and other rules may differ. Sources were reviewed on .
At the time of purchase: capture and add context
- Capture the full receipt. Include merchant, date, line items, tax, total, payment method, and any relevant reverse side.
- Inspect at full size. Thermal paper fades; re-scan immediately if small type is blurred or cropped.
- Verify OCR fields. Compare date, merchant, subtotal, tax, tip, and total with the source image.
- Add the fact the receipt cannot show. Record the business purpose, project, client, attendees where relevant, and expense category.
- Keep a stable link. Use a filename, transaction ID, or accounting attachment that connects the image to the books.
The IRS recordkeeping page says supporting documents contain the information used to record business transactions and that taxpayers carry the burden of substantiating return entries and deductions.
Weekly: reconcile, do not just collect
Match each image to a card, bank, cash, or reimbursement transaction, and write down whatever will not match. Your exception list is for:
- transactions with no receipt;
- receipts with no matching transaction;
- duplicate captures;
- personal and business amounts on the same purchase;
- refunds, credits, tips, and foreign-currency differences;
- missing business purpose or attendees.
The point of doing this weekly is that the gaps are still fixable. A transaction with no receipt on Friday is usually a shop you can call, an email confirmation you can find, or a purchase you still remember well enough to write down. The same gap found in March, for a Tuesday last May, is a guess. Ten minutes a week is what buys you that difference.
A card statement can help prove payment, but it may not show what was purchased or why it was business-related. Current Publication 463 says documentary evidence is ordinarily adequate when it shows amount, date, place, and essential character; a canceled check alone does not prove business purpose.
Monthly: close a bounded period
- Finish the weekly exception list.
- Export the month’s source images or PDFs in a common format.
- Export the accounting report or transaction list that references them.
- Confirm totals against bank and card statements.
- Back up the files to an independent location.
- Open a sample outside the scanning and accounting apps.
This creates twelve reviewable units instead of one uncontrolled year-end pile. Corrections are easier while the purchase and participants are still remembered.
What an electronic storage system must preserve
Revenue Procedure 97-22 describes requirements for electronic storage systems, including complete and accurate transfer, indexing, integrity controls, retrieval, and legible reproduction. The standard concerns the system and the evidence, not whether the file extension is PDF or JPG.
Do not treat automatic cloud sync as the only backup. Verify that you can retrieve a complete file set and that the files remain connected to the accounting records. Keep the original paper when another requirement or the document’s condition makes it prudent.
The $75 passage is not a universal no-receipt rule
Publication 463 includes a documentary-evidence exception for an expense under $75, other than lodging, within its travel, gift, and car record rules. It is not a statement that every business expense under $75 needs no records. An adequate record and business purpose are still required, and keeping an available receipt reduces ambiguity.
See the detailed digital-receipt analysis for the legal basis and limitations.
Year end: hand off evidence, not a camera roll
Before preparing the return or sending records to a tax professional:
- resolve unmatched transactions and duplicates;
- separate personal amounts and reimbursements;
- export annual summaries and source documents;
- include mileage logs and category-specific evidence;
- document the storage system and folder/index structure;
- keep a copy of the final return and any workpapers supplied by the preparer.
A clean handoff reduces questions but does not determine deductibility. Ask the preparer which evidence is needed for unusual, mixed-use, high-value, or incomplete items.
How long to keep the files
The IRS retention guidance generally starts at three years but lists longer periods for omitted income, worthless securities or bad debts, employment taxes, property basis, no return, and fraudulent returns. Apply the period to the event the receipt supports, and check non-tax requirements before deletion.
Where ScanLens fits
ScanLens can capture receipts on iPhone, run OCR on-device, and export PDF or image files. Current public product facts list free iCloud backup. OCR can speed naming and review, but compare every important field with the image and maintain another recoverable copy.
Use the receipt capture page, the self-employed record checklist, and the current App Store listing.
Bottom line
The durable process is capture, context, reconciliation, export, backup, and retention. A folder full of receipt photographs skips the steps that explain what the expenses were and connect them to the return.
