Switching Expense or Mileage Apps Mid-Year: How to Move Receipts and Your Mileage Log Without Breaking the IRS Record Trail (2026)

Published: October 20, 2026 · Reading time: 10 min

TL;DR: Changing receipt or mileage apps partway through the year is fine. Leaving the first half of your records inside an app you no longer pay for is not. Rev. Proc. 97-22, the IRS guidance on electronic records, says records in a storage system you stop maintaining are deemed destroyed unless they remain available to the IRS, and that using a third-party service does not shift that responsibility. Before you cancel: export the trip-level mileage log and the original receipt images, not just a summary; check counts and legibility; record an odometer reading on the switchover day; and remove any trips both apps logged during an overlap. Then price 2026 miles by date: 72.5 cents through June 30 and 76 cents from July 1. In the worked example below, a freelancer with 8,220 business miles has a $6,112.80 standard-rate deduction. Double-counting a one-week overlap overstates it by $141.36, and applying 72.5 cents to the whole year understates it by $153.30. This guide is general education, not tax advice.

People switch apps for ordinary reasons: a price increase, a new phone, a bank feed that stopped working, a tool that finally does mileage and receipts in one place. The tax rules don't care which app you use. They care that, when asked, you can produce a complete record for the whole year. A mid-year switch splits that record across two systems, and the half you leave behind is the half most likely to go missing.

This guide covers what the IRS says about records kept in software, what to export before you cancel, how to stitch two mileage logs into one year, and the two arithmetic errors that a switch tends to create. For the general rules, see our guides to digital receipts and the IRS, contemporaneous mileage logs and how long to keep receipts.

What the IRS Says About Records Kept in Software

Start with the reassuring part. Records kept in an app are records. Publication 463 says you must generally prepare a written record for it to be adequate, and adds that "if you prepare a record on a computer, it is considered an adequate record." A mileage log in an app and a scanned receipt can both do the job.

The less familiar part is what happens to those records after you stop using the system. The IRS's main guidance on electronic storage is Rev. Proc. 97-22. It applies to taxpayers who keep books and records in an "electronic storage system," which it defines as a system that images paper documents or transfers computerized records to electronic storage. Two of its provisions matter most for a switch.

Using a provider doesn't move the responsibility. Section 3.03 says: "A taxpayer's use of a third party (such as a service bureau or timesharing service) to provide the taxpayer with an electronic storage system for its books and records does not relieve the taxpayer of the responsibilities described in this revenue procedure." A receipt app is, in practical terms, a third party holding your records.

Abandoned systems count as destroyed records. Section 4.01(9) allows more than one system, provided each one meets the revenue procedure's requirements. It then says:

"Electronically stored books and records that are contained in an electronic storage system with respect to which the taxpayer ceases to maintain the hardware and the software necessary to satisfy the conditions of this revenue procedure will be deemed destroyed by the taxpayer, unless the electronically stored books and records remain available to the Service in conformity with this revenue procedure."

Publication 583 says the same thing more plainly: when you replace hard copy books and records, "you must maintain the electronic storage systems for as long as they are material to the administration of tax law."

Two caveats. First, Rev. Proc. 97-22 was written in 1997 with systems like optical disks in mind, and it does not mention phone apps or subscriptions. How exactly it applies to a particular consumer app is a judgment call, so don't treat this guide as a ruling on yours. Second, nothing here says your deductions disappear because you changed apps. The risk is narrower and more practical: if the only copy of January-to-July lives in an account you closed, you may not be able to produce it when asked.

Why the Mileage Log Is the Half You Can't Rebuild

Receipts lost in a switch can sometimes be re-downloaded from a vendor's portal or your email. A mileage log usually can't be replaced that way, and the rules for vehicles are stricter.

A car or truck you use for business is generally listed property, which puts it under Section 274(d)'s substantiation rule. Treasury Regulation 1.274-5T says that rule "supersedes the doctrine found in Cohan v. Commissioner," the case that lets courts approximate some expenses when the exact amount is unknown. So for vehicle use, estimating isn't an option. Publication 463 puts it directly: "You can't deduct amounts that you approximate or estimate."

Publication 463's Table 5-1 lists what a car expense needs: the mileage for each business use, the total miles for the year, the date of each use, your business destination and the business purpose. That second item, total miles for the year, is the one that most often breaks in a switch. Each app knows only the miles it saw. Neither knows the whole year unless you give it an anchor.

Schedule C asks for the same thing. On the 2025 form, Part IV line 44 asks, "Of the total number of miles you drove your vehicle during 2025," how many were business, commuting and other. Line 47a asks whether you have evidence to support your deduction, and line 47b asks whether that evidence is written. (Part IV is for filers claiming car or truck expenses on line 9 who are not required to file Form 4562 for the business; others report vehicle information on Form 4562. Check the 2026 form when it is released.)

If the export is lost and you have to rebuild the log, see reconstructing a mileage log after the fact. It covers what evidence helps and why rebuilding is the weak position.

What to Export Before You Cancel

Do the export while the old account is still fully active. Some apps limit what a lapsed or downgraded account can see or download. Read your app's terms rather than assuming the data will wait for you.

Check the export before you trust it

An export that looks complete may not be. Rev. Proc. 97-22 asks for an electronic storage system with "an inspection and quality assurance program evidenced by regular evaluations of the electronic storage system including periodic checks of electronically stored books and records," and for reproductions with a high degree of legibility and readability. For a freelancer, that comes down to three checks:

1. Count. The number of receipts and trips in the export should match the app. If the app shows 214 receipts and the folder has 211 images, find the missing three before you cancel.
2. Total. The export's total expenses and total miles should equal what the app showed for the same dates.
3. Open a sample. Open a dozen images from different months, especially faded paper receipts and multi-page invoices, and make sure every letter and number can be read.

Then save the files unedited in a folder named for the year and the app, with a second copy somewhere else. Our cloud backup guide covers the 3-2-1 approach. Don't "clean up" the original export. If you need a combined file, build it as a separate copy so the original stays as the app produced it.

Stitching Two Mileage Logs Into One Year

The goal is a single year that adds up: business miles by date from two sources, and total miles anchored to the odometer.

Fix the boundary. Pick one switchover date and record the odometer that morning. Publication 463 doesn't require a reading on the switchover day, but you need the January 1 and December 31 readings for total miles anyway, and a mid-year reading lets you check each app's half separately. See odometer readings for your mileage log.

Expect an overlap and remove it once. Most people run both apps for a few days to make sure the new one works. During that week, the same trip appears in both logs. Pick one app's version of each overlapping trip and delete the other in your combined copy, not in the original exports.

Expect small differences in distance. Two GPS apps rarely record the same trip as exactly the same number of miles. If the gap is small, use one app's figure consistently for the overlap. If it's large, see GPS versus odometer discrepancies.

Price by date, not by app. For 2026 the IRS lists two business standard mileage rates: 72.5 cents per mile for January 1 through June 30 (IR-2025-128) and 76 cents per mile for July 1 through December 31 (IR-2026-29). Each trip takes the rate for the date it was driven. If one app covered January to mid-August, its miles fall in both periods. See the 2026 mileage rate guide.

Keep the method separate from the app. Switching apps doesn't switch you from the standard mileage rate to actual expenses, or back. Each vehicle's method is its own decision with its own rules. See switching from standard mileage to actual expenses before you change it.

Worked Example: One Car, Two Apps, Two Rates

Dana is a freelance photographer with one car. She used App A from January 1 and switched to App B on August 15, 2026. She let App A keep running through August 21 to make sure App B was working, so both apps logged the same trips that week. Her preparer has confirmed that her home office is her principal place of business, so she records no commuting miles.

What each export shows (business miles):

Adding the two exports gives 5,146 + 3,260 = 8,406 miles. That counts the 186 overlap miles twice. With the duplicates removed, the year is 8,220 business miles: 3,840 in the first period and 1,120 + 3,260 = 4,380 in the second.

The deduction, priced by date:

Two errors a switch tends to create:

The first error claims miles that weren't driven. The second leaves money on the table, and it's easy to make if either app, or a spreadsheet you inherited from January, uses a single rate for 2026.

Total miles and business use. Dana's odometer read 41,250 on January 1 and 55,950 on December 31, so she drove 14,700 miles in all. With 8,220 business miles and no commuting, her other miles are 14,700 − 8,220 = 6,480, and business use is about 55.9%. Those are the figures that go on Schedule C Part IV line 44 (or the equivalent Form 4562 lines if she files that form). Neither app could have produced them alone, because each saw only part of the year.

These are deduction amounts, not tax savings. What a dollar of deduction is worth depends on the household's income and brackets, which this example doesn't state.

Receipts: Same Idea, Fewer Traps

Receipts are easier than mileage because each one stands alone. There's no annual total to reconcile. The traps are different:

• The ledger without the images. A CSV of expenses is your index, not your evidence. For a business meal, a hotel stay or a vehicle repair, you want the receipt itself. See what makes a receipt valid for the IRS.
• The same receipt in both apps. If you re-scan old receipts into the new app to have everything in one place, mark them as migrated, or keep them out of the new app's totals. Otherwise your preparer may get the same expense twice, once from each app's report.
• Category drift. Two apps rarely use the same category names. Before you hand both exports to a preparer, map each app's categories to the Schedule C lines once, in writing, so "Auto" in one app and "Vehicle" in the other don't end up on different lines.
• Notes that live only in the old app. A business purpose note or a confidential-client code is part of the record. Make sure the export includes notes, not just amounts.

How Long to Keep the Old App's Export

Treat the export like any other tax record. The IRS's recordkeeping guidance says to keep records for 3 years in the general case. It's 6 years if you don't report income you should have and it's more than 25% of the gross income shown on your return. It's 7 years if you claim a loss from worthless securities or a bad debt deduction, and indefinitely if you don't file a return or you file a fraudulent one. Records connected to property, such as a car you depreciate under actual expenses, are generally kept until the period of limitations expires for the year you dispose of the property. Publication 463 adds that you must keep records of the business use of your car for each year of the recovery period.

In practice, an export from 2026 may need to outlive both apps. That's why you store it yourself in plain formats (images, PDFs, CSV) rather than counting on either vendor.

Common Mistakes to Avoid

1. Cancelling first and exporting later. Do the export, check it, and only then close the account.
2. Exporting only the summary report. A yearly total isn't a mileage log, and a ledger isn't a receipt.
3. Skipping the switchover odometer reading. Without it, you can't check either app's half of the year against the car.
4. Double-counting the overlap week. Remove duplicate trips once, in a combined copy, and keep the original exports untouched.
5. Using one rate for all of 2026. Price miles by date: 72.5 cents through June 30, 76 cents from July 1.
6. Treating an app change as a method change. The standard-rate versus actual-expense decision belongs to the vehicle, not the app.
7. Assuming a vendor's shutdown is a casualty. Publication 463's examples of reasons beyond your control are fire, flood and other casualties. It doesn't address an app closing, so don't count on that relief.

How CentSense Helps

If CentSense is the app you're switching to, here's what it does and doesn't cover:

• Scan receipts with AI as you pay, so the vendor, date and total are captured with the image. The free tier includes 10 AI scans a month, and the Solo plan ($5/month) includes unlimited scans
• Log trips with a date, destination and business purpose on the Solo plan, starting from your switchover date
• Export your expenses and your mileage log as CSV for your preparer

Two limits worth knowing. CentSense's mileage export applies a single annual rate to 2026 and does not apply the July 1 split (72.5 cents, then 76 cents), so price each trip at the rate for its date yourself. And the CSV is a ledger of your entries, not a copy of the receipt images, so keep the images from your old app in your own storage as described above. CentSense doesn't replace your old app's export, so keep that file however you start in CentSense. For more reading, see GPS mileage apps and IRS compliance and Schedule C line 9 car and truck expenses.

Frequently Asked Questions

If I cancel my old expense or mileage app, do I lose the records the IRS needs?

You can, if the records stay locked in the old app. Rev. Proc. 97-22, the IRS guidance on electronic storage systems, says electronically stored records in a system for which you stop maintaining the hardware and software needed to meet its conditions will be deemed destroyed, unless the records remain available to the IRS in conformity with the revenue procedure. It also says using a third party to provide the storage system does not relieve you of the responsibilities it describes. The revenue procedure dates from 1997 and does not mention phone apps, so how it maps onto a particular app is a judgment area, but the practical lesson is clear: export the receipt images and the full trip-level log, check the export is complete and legible, and keep it before the old account closes. Ask a CPA or EA if your records are already gone.

Is a CSV export from my old app enough, or do I need the receipt images too?

Keep both. A CSV of expenses is a ledger: it lists the date, vendor and amount you entered, but it is not the receipt. Publication 463 says you must generally have documentary evidence such as receipts, canceled checks or bills to support your expenses, and travel, gifts and vehicle use carry the stricter Section 274(d) substantiation rules. Export the original images (or PDFs) along with the CSV, confirm the counts match, and spot-check that the images are legible. Rev. Proc. 97-22 asks that stored records can be reproduced as legible and readable copies. Ask a CPA or EA if your old app only offers a summary export.

How do I combine two mileage logs from different apps into one year?

Keep both trip-level exports unchanged, then build a combined summary on top of them. Fix the switchover date, remove any trips that both apps recorded during an overlap week, and total business miles by rate period: for 2026, 72.5 cents per mile for January 1 through June 30 (IR-2025-128) and 76 cents per mile from July 1 (IR-2026-29). Publication 463 lists the mileage for each business use and the total miles for the year among the records a car expense needs, so record odometer readings at the start of the year, at the switchover and at year-end. Publication 463 also says you can't deduct amounts you approximate or estimate, so do not fill gaps with averages. Ask a CPA or EA if the two logs do not reconcile.

Does switching mileage apps mean I am switching from the standard mileage rate to actual expenses?

No. The app is only where the log lives; the deduction method is a separate choice for each vehicle with its own rules, and changing apps does not change it. What does change in 2026 is the rate by date: 72.5 cents per mile through June 30 and 76 cents from July 1, per the IRS standard mileage rates page. Some apps apply one rate to the whole year, so recompute the dollar figure yourself from business miles in each period. If you are also considering a change of method, ask a CPA or EA first, because that decision has consequences for later years.

What if my old app shut down or deleted my data before I exported it?

Then you are rebuilding records, which is the weak position. Publication 463 says that if you can't produce a receipt for reasons beyond your control you can prove a deduction by reconstructing your records, and it gives fire, flood and other casualties as examples. It does not say whether an app closing or a lapsed subscription counts, so do not assume it does. For vehicle use, Treasury Regulation 1.274-5T says the Section 274(d) substantiation rule supersedes the Cohan doctrine, so estimating miles is not available. Rebuild from calendars, invoices, client emails, fuel and toll receipts, and keep a note of how you rebuilt it. Ask a CPA or EA before relying on reconstructed records.

How long do I need to keep the export files from my old app?

As long as any other record that supports your return. The IRS says to keep records for 3 years in the general case, 6 years if you do not report income that you should and it is more than 25% of the gross income shown on your return, 7 years if you claim a loss from worthless securities or a bad debt deduction, and indefinitely if you do not file a return or file a fraudulent one. Records connected to property, such as a vehicle you depreciate, are generally kept until the period of limitations expires for the year you dispose of it, and Publication 463 says to keep records of the business use of your car for each year of the recovery period. Ask a CPA or EA which period applies to you.

Authoritative References

• IRS: Rev. Proc. 97-22, electronic storage systems for books and records (section 3.03 third-party providers; section 4.01 general requirements, including 4.01(9) on systems no longer maintained; section 7 destruction of originals)
• IRS: Publication 463, Travel, Gift, and Car Expenses (2025 edition; Chapter 5, Recordkeeping, including Table 5-1, "Timely kept records," "Destroyed records" and "How Long To Keep Records and Receipts")
• IRS: Publication 583, Starting a Business and Keeping Records ("Electronic records")
• IRS: How long should I keep records?
• IRS: Standard mileage rates (2026 business rates: 72.5 cents through June 30, IR-2025-128; 76 cents from July 1, IR-2026-29)
• IRS: 2025 Schedule C (Form 1040), Part IV, Information on Your Vehicle (lines 43 to 47b)
• 26 CFR 1.274-5T: Substantiation requirements (paragraph (a), Section 274(d) supersedes the Cohan doctrine)

Switching apps? Start the second half of the year clean. Start a free CentSense account, scan each receipt with AI as you pay, log every trip from your switchover date with its purpose, and export a CSV for your preparer at tax time. The free tier includes 10 AI receipt scans a month, and the Solo plan is $5/month for unlimited scans, mileage tracking and CSV export.

This guide is general education for U.S. freelancers filing a Schedule C in 2026. It is not personalized tax advice. How Rev. Proc. 97-22 applies to a particular app, how to reconcile two logs that disagree, whether reconstructed records will be accepted, and which retention period applies are judgment areas. Confirm the facts that drive your numbers with a CPA or EA based on your full situation.