Archiving is retention put into practice. Where retention rules say how long records must survive, archiving is the arrangement that makes surviving possible — and tax authorities generally attach three conditions to it: integrity, meaning the record has not been altered; legibility, meaning it can still be read; and availability, meaning it can be produced on request within a reasonable time.
Digital archiving is accepted essentially everywhere, but as a permission with conditions rather than a free choice. A folder of files that anyone can overwrite satisfies the letter of "we kept them" and fails the spirit of integrity.
Why It Matters
Two failure modes catch small businesses. The first is integrity: editable files in a shared drive are weak evidence, because nothing shows whether a document changed after issue. The second is legibility over time — a proprietary format from software that no longer exists can become unreadable years before the retention clock runs out, which is why open, plain formats age better than clever ones. Under e-invoicing mandates a third appears: where the original was a structured file, that file is usually the legal record, and a PDF rendering of it is a convenience copy rather than a substitute.
Example
A business archives each year to a dated folder holding the structured invoice files, their PDF renderings, and the supporting contracts and bank statements. The folder is copied to storage the working systems cannot overwrite, and a documented rule says what gets deleted in which year.
Frequently Asked Questions
Can I store invoices on servers in another country?
Often yes, but some jurisdictions impose conditions on offshore storage or require guaranteed access from within the country. If your provider’s data centres are abroad, confirm the position for your own jurisdiction.
Is a cloud accounting account enough on its own?
It is a reasonable primary archive but a poor sole one. An account can be suspended, closed on a lapsed subscription, or lost with the vendor. Keep an independent export in an open format.