Export an IRS-Ready Mileage Report
MileMarker turns your drive log into files your accountant can actually use: free CSV exports of drives and expenses, an IRS Pub 463 style PDF, and a sealed evidence bundle for audit season. It's all built from the "Reports" tab, and this guide walks through each export.
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Open the Reports Tab
Exports live on the "Reports" tab, second from the left in the bottom bar. Scroll to the "Export" section near the bottom. It lists every file the app can produce for the year you're viewing.
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Choose the Tax Year
At the top of "Reports", tap the "Tax year" pill and pick a year. The menu lists every year that has drives, plus the current one, newest first. Everything below follows your choice, and each export row shows the selected year in its title.
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Export the Drives CSV (Free)
Tap the "CSV" row to open "Export Options". Under "Date range", pick "Full year", "All tax years", "This week", "This month", or "Custom" with its own "Starts" and "Ends" dates. "This week" and "This month" only appear when they overlap the year you're viewing, and the "Custom" pickers stay inside that year. "All tax years" is the one range that reaches wider: it exports every drive in the app. Under "Columns", the "Full (re-importable)" preset keeps every column, and it's the only layout MileMarker can import back later. "Date" and "Distance" are always included. The sheet shows how many drives your range covers. Tap "Export" when it looks right; the file opens in any spreadsheet.
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Export the Expenses CSV (Free)
If the selected year has expenses, an "Expenses CSV" row appears with the subtitle "Fuel, tolls, insurance and more". It works the same way: pick a date range, pick columns, tap "Export". "Date" and "Amount" are always included. No expenses in the year means no row, so log some on the "Expenses" tab first if you're expecting one.
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Export the IRS Pub 463 PDF (Pro)
Tap "IRS Pub 463 PDF" to build the report your accountant will want. It's a Pro export, included in your 7-day trial; without Pro the row reads "Pro · unlock to export" and opens the upgrade screen instead. The options sheet keeps the fields IRS Publication 463 asks for on every business drive locked on, under "Required by the IRS": "Date", "Distance", "From and to", and "Purpose". Under "Optional" you can toggle "Category", "Type", "Deduction column", and "Category summary". Tap "Export" and MileMarker renders one row per drive in the year, a per-category summary when "Category summary" is on, and a total deduction line. Each drive is valued at the IRS rate in effect the day you drove, so a mid-year rate change never skews the total. The report's own footer says it plainly: for record-keeping only, not tax advice.
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Lock a Past Year and Export the Evidence Bundle (Pro)
Once a tax year has fully ended, the "Export" section adds a lock row, for example "Lock 2025 tax year". Locking makes that year's drives read-only, freezes each drive's deduction, and starts an audit trail. A locked year then shows "Export evidence bundle": one zip holding the IRS PDF, the drives CSV, an edit history CSV, an expenses CSV, and a manifest listing a SHA-256 hash of each CSV, so anyone can check those figures haven't changed since you sealed the year. Locking and the bundle are Pro. If you need to edit later, tap the "Unlock" row for that year, for example "Unlock 2025"; each unlock is recorded in the audit trail.
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Save or Share the File
Every export finishes in the standard iOS share sheet. Save it to the Files app, AirDrop it to your Mac, or email it straight to your accountant. Files are named so they're easy to spot later, like MileMarker-2026.csv or MileMarker-2026-Tax-Report.pdf. Save or send before you close the sheet: MileMarker deletes its temporary copy when the sheet closes so tax data doesn't linger in storage. You can re-export any time.
If Something's Off
The "Export" button is dimmed and the sheet says "No drives in this range."
Pick a wider "Date range". "This week" and "This month" cover only the current week or month, so older drives need "Full year" or wider "Custom" dates.
The "IRS Pub 463 PDF" row says "Pro · unlock to export" and opens the upgrade screen.
The PDF is a Pro export. It's included in the 7-day trial that starts at first launch; after that, subscribe monthly or yearly through Apple. The drives and expenses CSVs stay free either way.
There's no "Expenses CSV" row in the Export section.
The row only appears once the selected year has at least one expense. Add expenses on the "Expenses" tab and the row shows up.
There's no lock row or "Export evidence bundle" option for this year.
Only a tax year that has fully ended can be locked, and the evidence bundle needs the lock first. The current year gets its lock row after the year closes.
An "Export Failed" alert appears.
The file couldn't be written. Try the export again, and free up a little storage if your iPhone is nearly full.
A file you exported earlier is nowhere on your iPhone.
MileMarker deletes its temporary copy when the share sheet closes, so the export only persists where you saved or sent it. Run the export again and save it to the Files app this time.
Common questions
Do I need Pro to export my drives?
No. The drives CSV and the expenses CSV are free, and manual logging is free forever. The IRS Pub 463 PDF and the evidence bundle are Pro, and both work during the 7-day all-Pro trial every install gets at first launch, no card needed.
What does the PDF report include?
One row per drive in the tax year with the date, distance, start and end points, and purpose that IRS Publication 463 asks for, plus optional category and deduction columns, a per-category summary, and a total deduction line. Each drive is valued at the IRS rate in effect the day you drove, and the report notes when a year's rate changed mid-year.
Can I hand this to my accountant?
Yes, that's what it's built for. Send the PDF for a readable log, or the CSV so they can work in a spreadsheet. Deduction figures are for record-keeping, not tax advice; your accountant makes the final call.
What's in the evidence bundle?
A single zip with the IRS PDF, the drives CSV, an edit history CSV, an expenses CSV, and a manifest listing a SHA-256 hash of each CSV so the figures can be verified later. It's available after you lock a past tax year, which freezes that year's deductions and starts an audit trail.
Why is my CSV missing some columns?
The options sheet remembers the column choices from your last export. Tap "Full (re-importable)" to bring every column back; that's also the only layout MileMarker can import into the app again later.
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Email support@getmm.app