Accountant's PC: Season-End Cleanup for Spreadsheet Machines

What a season leaves behind

Downloads turns into an archive of duplicate statements — the same PDF saved three times with (1) and (2) in the name, because portals regenerate them on every click. Every workbook that ever crashed leaves ~$ lock files and .tmp autosave remnants in its folder and in %APPDATA%\Microsoft\Excel\, and Office's upload cache swells after months of OneDrive and SharePoint churn. The browser carries hundreds of portal sessions, cached PDFs and print leftovers from every government site visited under deadline.

The disk math is predictable: 20 to 80 GB of pure season residue on a machine that also runs tax software, its data folders and year-over-year client archives. Almost none of it is the software's fault — it is deferred filing, and it compounds like everything else in accounting. The point of a season-end cleanup is to separate the residue from the records before both grow another year older.

The season-end checklist

Run the list top to bottom once the last return is filed, and it fits into an afternoon. The order matters: archive and verify first, delete second, update last, so nothing you still need is ever missing at the moment the machine restarts clean. Do not skip the verification steps — they are what separates a cleanup from a data-loss story.

• Archive by year: close client folders into year-labeled archives (ZIP with AES-256 or 7z), verify each opens, then remove the loose copies
• Purge Downloads: keep final filed versions, delete regenerated statements, exports and installer stubs
• Sweep Excel residue: ~$ lock files, .tmp copies and stale AutoRecover drafts once the final workbooks are saved
• Trim Office and browser caches: months of portal sessions and upload leftovers are pure junk after season
• Update everything before shelving the machine: OS, Office, tax software, printer drivers — next season starts from a calm baseline
• Verify backups of the final returns before deleting any loose copy anywhere

Client data is not junk: retention rules and the untouchables

Everything client-identifiable — returns, statements, ID scans — follows your firm's retention policy, not the Recycle Bin: encrypt the archives, store them where the policy says, and empty the Recycle Bin afterward so "deleted" means deleted. The untouchables are fixed: tax software data folders, Outlook data files (.pst and .ost), signed final PDFs before they are archived and verified, and anything you cannot name in one sentence. When in doubt, archive it with the year — do not improvise a retention policy at 9 p.m. on a Friday.

A single junk-cleaning pass with Kleaner PRO at the end sweeps the temp and cache residue the checklist leaves behind — caches, autosave remnants, installer leftovers — without going near documents or the untouchables. Keep it last in the sequence so it sweeps only what remains after your own decisions. After that, the machine sits clean, updated and boring, which is exactly the state you want it to wake up in when the next season starts earning its mess again.

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